class Image extends File (View source)

Represents an Image

Traits

Provides image manipulation functionality.

This trait can be applied to a ViewableData class to add the logic to render attributes in an SS template.

Allows an object to have extensions applied to it.

A class that can be instantiated or replaced via DI

Provides extensions to this object to integrate it with standard config API methods.

Allows an object to declare a set of custom methods

Constants

CHANGE_NONE

Represents a field that hasn't changed (before === after, thus before == after)

CHANGE_STRICT

Represents a field that has changed type, although not the loosely defined value.

(before !== after && before == after) E.g. change 1 to true or "true" to true, but not true to 0. Value changes are by nature also considered strict changes.

CHANGE_VALUE

Represents a field that has changed the loosely defined value (before != after, thus, before !== after)) E.g. change false to true, but not false to 0

CREATE_OBJECT

Value for 2nd argument to constructor, indicating that a new record is being created Setters will be called on fields passed, and defaults will be populated

CREATE_SINGLETON

Value for 2nd argument to constructor, indicating that a record is a singleton representing the whole type, e.g. to call requireTable() in dev/build Defaults will not be populated and data passed will be ignored

CREATE_HYDRATED

Value for 2nd argument to constructor, indicating that a record is being hydrated from the database Setter methods are not called, and population via private static $defaults will not occur.

CREATE_MEMORY_HYDRATED

Value for 2nd argument to constructor, indicating that a record is being hydrated from memory. This can be used to initialised a record that doesn't yet have an ID. Setter methods are not called, and population via private static $defaults will not occur.

EDIT_ALL

Permission for edit all files

Properties

static private array $extensions

An array of extension names and parameters to be applied to this object upon construction.

from  Extensible
static private array $casting

An array of objects to cast certain fields to. This is set up as an array in the format:

from  ViewableData
static private string $default_cast

The default object to cast scalar fields to if casting information is not specified, and casting to an object is required.

from  ViewableData
static private string $singular_name
static private string $plural_name
static private $api_access

Allow API access to this object?

from  DataObject
static private string $default_classname

Allows specification of a default value for the ClassName field.

from  DataObject
bool $destroyed from  DataObject
static private bool $validation_enabled

Should dataobjects be validated before they are written?

from  DataObject
static private array $fixed_fields

Base fields which are not defined in static $db

from  DataObject
static private array $cascade_deletes

List of relations that should be cascade deleted, similar to owns Note: This will trigger delete on many_many objects, not only the mapping table.

from  DataObject
static private array $db

Database field definitions.

from  DataObject
static private array $create_table_options

Specify custom options for a CREATE TABLE call.

from  DataObject
static private array $indexes

If a field is in this array, then create a database index on that field. This is a map from fieldname to index type.

from  DataObject
static private array $defaults

Inserts standard column-values when a DataObject is instantiated. Does not insert default records {see $default_records}.

from  DataObject
static private array $default_records

Multidimensional array which inserts default data into the database on a db/build-call as long as the database-table is empty. Please use this only for simple constructs, not for SiteTree-Objects etc. which need special behaviour such as publishing and ParentNodes.

from  DataObject
static private array $has_one

One-to-zero relationship defintion. This is a map of component name to data type. In order to turn this into a true one-to-one relationship you can add a {@link DataObject::$belongs_to} relationship on the child class.

from  DataObject
static private array $belongs_to

A meta-relationship that allows you to define the reverse side of a {@link DataObject::$has_one}.

from  DataObject
static private array $has_many

This defines a one-to-many relationship. It is a map of component name to the remote data class.

from  DataObject
static private array $many_many

many-many relationship definitions.

from  DataObject
static private array $many_many_extraFields

Extra fields to include on the connecting many-many table.

from  DataObject
static private array $belongs_many_many

The inverse side of a many-many relationship.

from  DataObject
static private string $default_sort

The default sort expression. This will be inserted in the ORDER BY clause of a SQL query if no other sort expression is provided.

from  DataObject
static private array $searchable_fields

Default list of fields that can be scaffolded by the ModelAdmin search interface.

from  DataObject
static private array $field_labels

User defined labels for searchable_fields, used to override default display in the search form.

from  DataObject
static private array $summary_fields

Provides a default list of fields to be used by a 'summary' view of this object.

from  DataObject
int $ID

ID of the DataObject, 0 if the DataObject doesn't exist in database.

from  DataObject
int $OldID

ID of object, if deleted

from  DataObject
string $Title

Title of the file

from  File
string $ClassName

Class name of the DataObject

from  DataObject
string $LastEdited

Date and time of DataObject's last modification.

from  DataObject
string $Created

Date and time of DataObject creation.

from  DataObject
string $ObsoleteClassName

If ClassName no longer exists this will be set to the legacy value

from  DataObject
static private bool $force_resample

Force all images to resample in all cases Off by default, as this can be resource intensive to apply to multiple images simultaneously.

from  ImageManipulation
static private int $strip_thumbnail_width from  ImageManipulation
static private int $strip_thumbnail_height from  ImageManipulation
static private int $cms_thumbnail_width

The width of an image thumbnail in the CMS.

from  ImageManipulation
static private int $cms_thumbnail_height

The height of an image thumbnail in the CMS.

from  ImageManipulation
static private int $asset_preview_width

The width of an image preview in the Asset section

from  ImageManipulation
static private int $asset_preview_height

The height of an image preview in the Asset section

from  ImageManipulation
static private array $non_live_permissions

Anyone with CMS access can view draft files

from  File
static private array $allowed_extensions from  File
static private array $app_categories from  File
static private $class_for_file_extension

Map of file extensions to class type

from  File
static private bool $apply_restrictions_to_admin from  File
static private bool $update_filesystem from  File
static private string[] $file_types

A list of file extensions and a description of what type of file they represent

from  File
string $Name

Basename of the file

from  File
string $Filename

Full filename of this file

from  File
DBFile $File

asset stored behind this File record

from  File
string $Content from  File
string $ShowInSearch

Boolean that indicates if file is shown in search. Doesn't apply to Folders

from  File
int $ParentID

ID of parent File/Folder

from  File
int $OwnerID

ID of Member who owns the file

from  File
static private string $table_name
static private bool $lazy_loading_enabled

Globally control whether Images added via the WYSIWYG editor or inserted as Image objects in Silverstripe templates have the loading="lazy" HTML added by default

Methods

mixed
__call(string $method, array $arguments)

Attempts to locate and call a method dynamically added to a class at runtime if a default cannot be located

bool
hasMethod(string $method)

Return TRUE if a method exists on this object

array
allMethodNames(bool $custom = false)

Return the names of all the methods available on this object

static bool
add_extension(string $classOrExtension, string $extension = null)

Add an extension to a specific class.

static 
remove_extension(string $extension)

Remove an extension from a class.

static array
get_extensions(string $class = null, bool $includeArgumentString = false)

No description

static array|null
get_extra_config_sources(string $class = null)

Get extra config sources for this class

static bool
has_extension(string $classOrExtension, string $requiredExtension = null, bool $strict = false)

Return TRUE if a class has a specified extension.

array
invokeWithExtensions(string $method, mixed $a1 = null, mixed $a2 = null, mixed $a3 = null, mixed $a4 = null, mixed $a5 = null, mixed $a6 = null, mixed $a7 = null)

Calls a method if available on both this object and all applied {@link Extensions}, and then attempts to merge all results into an array

array
extend(string $method, mixed $a1 = null, mixed $a2 = null, mixed $a3 = null, mixed $a4 = null, mixed $a5 = null, mixed $a6 = null, mixed $a7 = null)

Run the given function on all of this object's extensions. Note that this method originally returned void, so if you wanted to return results, you're hosed

Extension|null
getExtensionInstance(string $extension)

Get an extension instance attached to this object by name.

bool
hasExtension(string $extension)

Returns TRUE if this object instance has a specific extension applied in {@link $extension_instances}. Extension instances are initialized at constructor time, meaning if you use {@link add_extension()} afterwards, the added extension will just be added to new instances of the extended class. Use the static method {@link has_extension()} to check if a class (not an instance) has a specific extension.

getExtensionInstances()

Get all extension instances for this specific object instance.

static Injectable
create(array ...$args)

An implementation of the factory method, allows you to create an instance of a class

static Injectable
singleton(string $class = null)

Creates a class instance by the "singleton" design pattern.

static Config_ForClass
config()

Get a configuration accessor for this class. Short hand for Config::inst()->get($this->class, .....).

mixed
stat(string $name) deprecated

Get inherited config value

mixed
uninherited(string $name)

Gets the uninherited value for the given config option

$this
set_stat(string $name, mixed $value) deprecated

Update the config value for a given property

__construct(array $record = null, $isSingleton = false, array $queryParams = [])

Construct a new DataObject.

bool
__isset(string $property)

Check if a field exists on this object or its failover.

mixed
__get(string $property)

Get the value of a property/field on this object. This will check if a method called get{$property} exists, then check if a field is available using {@link ViewableData::getField()}, then fall back on a failover object.

__set(string $property, mixed $value)

Set a property/field on this object. This will check for the existence of a method called set{$property}, then use the {@link ViewableData::setField()} method.

setFailover(ViewableData $failover)

Set a failover object to attempt to get data from if it is not present on this object.

getFailover()

Get the current failover object if set

bool
hasField(string $field)

Returns true if the given field exists in a database column on any of the objects tables and optionally look up a dynamic getter with get().

mixed
getField(string $field)

Gets the value of a field.

$this
setField(string $fieldName, mixed $val)

Set the value of the field Called by {@link __set()} and any setFieldName() methods you might create.

defineMethods()

Adds methods from the extensions.

customise(array|ViewableData $data)

Merge some arbitrary data in with this object. This method returns a {@link ViewableData_Customised} instance with references to both this and the new custom data.

bool
exists()

Determine if this container has a valid value

string
__toString()

No description

setCustomisedObj(ViewableData $object)

No description

string
castingHelper(string $field)

Return the "casting helper" (a piece of PHP code that when evaluated creates a casted value object) for a field on this object. This helper will be a subclass of DBField.

string
castingClass(string $field)

Get the class name a field on this object will be casted to.

string
escapeTypeForField(string $field)

Return the string-format type for the given field.

renderWith(string|array|SSViewer $template, array $customFields = null)

Render this object into the template, and get the result as a string. You can pass one of the following as the $template parameter:

  • a template name (e.g. Page)
  • an array of possible template names - the first valid one will be used
  • an SSViewer instance

object|DBField
obj(string $fieldName, array $arguments = [], bool $cache = false, string $cacheName = null)

Get the value of a field on this object, automatically inserting the value into any available casting objects that have been specified.

object|DBField
cachedCall(string $field, array $arguments = [], string $identifier = null)

A simple wrapper around {@link ViewableData::obj()} that automatically caches the result so it can be used again without re-running the method.

bool
hasValue(string $field, array $arguments = null, bool $cache = true)

Returns true if the given method/parameter has a value (Uses the DBField::hasValue if the parameter is a database field)

string
XML_val(string $field, array $arguments = [], bool $cache = false)

Get the string value of a field on this object that has been suitable escaped to be inserted directly into a template.

array
getXMLValues(array $fields)

Get an array of XML-escaped values by field name

getIterator()

Return a single-item iterator so you can iterate over the fields of a single record.

array
getViewerTemplates(string $suffix = '')

Find appropriate templates for SSViewer to use to render this object

Me()

When rendering some objects it is necessary to iterate over the object being rendered, to do this, you need access to itself.

string
ThemeDir() deprecated

Return the directory if the current active theme (relative to the site root).

string
CSSClasses(string $stopAtClass = self::class)

Get part of the current classes ancestry to be used as a CSS class.

Debug()

Return debug information about this object that can be rendered into a template

getSchema()

Get schema object

destroy()

Destroy all of this objects dependant objects and local caches.

duplicate(bool $doWrite = true, array|null|false $relations = null)

Create a duplicate of this node. Can duplicate many_many relations

string
getObsoleteClassName()

Return obsolete class name, if this is no longer a valid class

string
getClassName()

Gets name of this class

$this
setClassName(string $className)

Set the ClassName attribute. {@link $class} is also updated.

newClassInstance(string $newClassName)

Create a new instance of a different class from this object's record.

bool
isEmpty()

Returns TRUE if all values (other than "ID") are considered empty (by weak boolean comparison).

string
i18n_pluralise(string $count)

Pluralise this item given a specific count.

string
singular_name()

Get the user friendly singular name of this DataObject.

string
i18n_singular_name()

Get the translated user friendly singular name of this DataObject same as singular_name() but runs it through the translating function

string
plural_name()

Get the user friendly plural name of this DataObject If the name is not defined (by renaming $plural_name in the subclass), this returns a pluralised version of the class name.

string
i18n_plural_name()

Get the translated user friendly plural name of this DataObject Same as plural_name but runs it through the translation function Translation string is in the form: $this->class.PLURALNAME Example: Page.PLURALNAME

string
getTitle()

Standard implementation of a title/label for a specific record. Tries to find properties 'Title' or 'Name', and falls back to the 'ID'. Useful to provide user-friendly identification of a record, e.g. in errormessages or UI-selections.

data()

Returns the associated database record - in this case, the object itself.

array
toMap()

Convert this object to a map.

array
getQueriedDatabaseFields()

Return all currently fetched database fields.

update(array $data)

Update a number of fields on this object, given a map of the desired changes.

castedUpdate(array $data)

Pass changes as a map, and try to get automatic casting for these fields.

bool
merge(DataObject $rightObj, string $priority = 'right', bool $includeRelations = true, bool $overwriteWithEmpty = false)

Merges data and relations from another object of same class, without conflict resolution. Allows to specify which dataset takes priority in case its not empty.

$this
forceChange()

Forces the record to think that all its data has changed.

validate()

No description

from  File
doValidate()

Public accessor for {see DataObject::validate()}

findCascadeDeletes(bool $recursive = true, ArrayList $list = null)

Find all objects that will be cascade deleted if this object is deleted

populateDefaults()

Load the default values in from the self::$defaults array.

write(bool $showDebug = false, bool $forceInsert = false, bool $forceWrite = false, bool|array $writeComponents = false)

Writes all changes to this object to the database.

writeRelations()

Writes cached relation lists to the database, if possible

writeComponents(bool $recursive = false, array $skip = [])

Write the cached components to the database. Cached components could refer to two different instances of the same record.

delete()

Delete this data object.

static 
delete_by_id(string $className, int $id)

Delete the record with the given ID.

array
getClassAncestry()

Get the class ancestry, including the current class name.

getComponent(string $componentName)

Return a unary component object from a one to one relationship, as a DataObject.

$this
setComponent(string $componentName, DataObject|null $item)

Assign an item to the given component

getComponents(string $componentName, int|array $id = null)

Returns a one-to-many relation as a HasManyList

string
getRelationClass(string $relationName)

Find the foreign class of a relation on this DataObject, regardless of the relation type.

string
getRelationType(string $component)

Given a relation name, determine the relation type

inferReciprocalComponent(string $remoteClass, string $remoteRelation)

Given a relation declared on a remote class, generate a substitute component for the opposite side of the relation.

getManyManyComponents(string $componentName, int|array $id = null)

Returns a many-to-many component, as a ManyManyList.

string|array
hasOne()

Return the class of a one-to-one component. If $component is null, return all of the one-to-one components and their classes. If the selected has_one is a polymorphic field then 'DataObject' will be returned for the type.

string|array
belongsTo(bool $classOnly = true)

Returns the class of a remote belongs_to relationship. If no component is specified a map of all components and their class name will be returned.

string|array|false
hasMany(bool $classOnly = true)

Gets the class of a one-to-many relationship. If no $component is specified then an array of all the one-to-many relationships and their classes will be returned.

array|null
manyManyExtraFields()

Return the many-to-many extra fields specification.

array|null
manyMany()

Return information about a many-to-many component.

array|false
database_extensions(string $class)

This returns an array (if it exists) describing the database extensions that are required, or false if none

getDefaultSearchContext()

Generates a SearchContext to be used for building and processing a generic search form for properties on this object.

scaffoldSearchFields(array $_params = null)

Determine which properties on the DataObject are searchable, and map them to their default {@link FormField} representations. Used for scaffolding a searchform for {@link ModelAdmin}.

scaffoldFormFields(array $_params = null)

Scaffold a simple edit form for all properties on this dataobject, based on default {@link FormField} mapping in {@link DBField::scaffoldFormField()}.

getCMSFields()

List of basic content editable file fields.

from  File
getCMSActions()

need to be overload by solid dataobject, so that the customised actions of that dataobject, including that dataobject's extensions customised actions could be added to the EditForm.

getCMSCompositeValidator()

When extending this class and overriding this method, you will need to instantiate the CompositeValidator by calling parent::getCMSCompositeValidator(). This will ensure that the appropriate extension point is also invoked.

getFrontEndFields(array $params = null)

Used for simple frontend forms without relation editing or {@link TabSet} behaviour. Uses {@link scaffoldFormFields()} by default. To customize, either overload this method in your subclass, or extend it by {@link DataExtension->updateFrontEndFields()}.

array
getChangedFields(bool|array $databaseFieldsOnly = false, int $changeLevel = self::CHANGE_STRICT)

Return the fields that have changed since the last write.

bool
isChanged(string $fieldName = null, int $changeLevel = self::CHANGE_STRICT)

Uses {@link getChangedFields()} to determine if fields have been changed since loading them from the database.

$this
setCastedField(string $fieldName, mixed $value)

Set the value of the field, using a casting object.

bool
hasDatabaseField(string $field)

Returns true if the given field exists as a database column

bool
can(string $perm, Member $member = null, array $context = [])

Returns true if the member is allowed to do the given action.

bool|null
extendedCan(string $methodName, Member|int $member, array $context = [])

Process tri-state responses from permission-alterting extensions. The extensions are expected to return one of three values:

bool
canView(Member $member = null)

No description

from  File
bool
canEdit(Member $member = null)

Check if this file can be modified

from  File
bool
canDelete(Member $member = null)

Check if this file can be deleted

from  File
bool
canCreate(Member $member = null, array $context = [])

Check if a file can be created

from  File
string
debug()

Debugging used by Debug::show()

dbObject(string $fieldName)

Return the DBField object that represents the given field.

mixed
relObject(string $fieldPath)

Traverses to a DBField referenced by relationships between data objects.

mixed
relField(string $fieldName)

Traverses to a field referenced by relationships between data objects, returning the value The path to the related field is specified with dot separated syntax (eg: Parent.Child.Child.FieldName)

string
getReverseAssociation(string $className)

Temporary hack to return an association name, based on class, to get around the mangle of having to deal with reverse lookup of relationships to determine autogenerated foreign keys.

static DataList
get(string $callerClass = null, string|array $filter = "", string|array $sort = "", string $join = "", string|array $limit = null, string $containerClass = DataList::class)

Return all objects matching the filter sub-classes are automatically selected and included

static DataObject|null
get_one(string $callerClass, string|array $filter = "", bool $cache = true, string $orderby = "")

Return the first item matching the given query.

flushCache(bool $persistent = true)

Flush the cached results for all relations (has_one, has_many, many_many) Also clears any cached aggregate data.

from  File
static 
flush_and_destroy_cache()

Flush the get_one global cache and destroy associated objects.

static 
reset()

Reset all global caches associated with DataObject.

from  File
static DataObject
get_by_id(string|int $classOrID, int|bool $idOrCache = null, bool $cache = true)

Return the given element, searching by ID.

string
baseTable()

Get the name of the base table for this object

string
baseClass()

Get the base class for this object

array
getSourceQueryParams()

No description

array
getInheritableQueryParams()

Get list of parameters that should be inherited to relations on this object

setSourceQueryParams(array $array)

No description

setSourceQueryParam(string $key, string $value)

No description

string
getSourceQueryParam(string $key)

No description

requireTable()

Check the database schema and update it as necessary.

requireDefaultRecords()

Add default records to database. This function is called whenever the database is built, after the database tables have all been created. Overload this to add default records when the database is built, but make sure you call parent::requireDefaultRecords().

onAfterBuild()

Invoked after every database build is complete (including after table creation and default record population).

array
searchableFields()

Get the default searchable fields for this object, as defined in the $searchable_fields list. If searchable fields are not defined on the data object, uses a default selection of summary fields.

array
fieldLabels(bool $includerelations = true)

Get any user defined searchable fields labels that exist. Allows overriding of default field names in the form interface actually presented to the user.

string
fieldLabel(string $name)

Get a human-readable label for a single field, see {@link fieldLabels()} for more details.

array
summaryFields()

Get the default summary fields for this object.

array
defaultSearchFilters()

Defines a default list of filters for the search context.

bool
isInDB()

No description

static 
disable_subclass_access()

Temporarily disable subclass access in data object qeur

static 
enable_subclass_access()

No description

array
provideI18nEntities()

Returns the list of provided translations for this object.

getJoin()

If selected through a many_many through relation, this is the instance of the joined record

$this
setJoin(DataObject $object, string $alias = null)

Set joining object

findRelatedObjects(string $source, bool $recursive = true, ArrayList $list = null)

Find objects in the given relationships, merging them into the given list

mergeRelatedObjects(ArrayList $list, mixed $items)

Helper method to merge owned/owning items into a list.

string
getUniqueKey()

Generate a unique key for data object the unique key uses the see DataObject::getUniqueKeyComponents() extension point so unique key modifiers such as versioned or fluent are covered i.e. same data object in different stages or different locales will produce different unique key

$this
setAttribute($name, $value)

Set an HTML attribute

mixed|null
getAttribute(string $name)

Retrieve the value of an HTML attribute

array
getAttributes()

Allows customization through an 'updateAttributes' hook on the base class.

string
getAttributesHTML(array $attributes = null)

Custom attributes to process. Falls back to {@link getAttributes()}.

$this
setAllowGeneration(bool $allow)

Set whether image resizes are allowed

bool
getAllowGeneration()

Check if resizes are allowed

existingOnly()

Return clone of self which promises to only return existing thumbnails

string
getString()

No description

resource
getStream()

No description

string
getURL(bool $grant = true)

No description

string
getAbsoluteURL()

No description

array|null
getMetaData()

Get metadata for this file

string
getMimeType()

Get mime type

int
getAbsoluteSize()

Return file size in bytes.

string
getFilename()

Get value of filename

string
getHash()

Get value of hash

string
getVariant()

Get value of variant

bool
getIsImage()

Determine if a valid non-empty image exists behind this asset

Pad(int $width, int $height, string $backgroundColor = 'FFFFFF', int $transparencyPercent = 0)

Fit image to specified dimensions and fill leftover space with a solid colour (default white). Use in templates with $Pad.

Resampled()

Forces the image to be resampled, if possible

updateURL(string $url)

Update the url to point to a resampled version if forcing

ResizedImage(int $width, int $height)

Generate a resized copy of this image with the given width & height.

Fit(int $width, int $height)

Scale image proportionally to fit within the specified bounds

FitMax(int $width, int $height)

Proportionally scale down this image if it is wider or taller than the specified dimensions.

ScaleWidth(int $width)

Scale image proportionally by width. Use in templates with $ScaleWidth.

ScaleMaxWidth(int $width)

Proportionally scale down this image if it is wider than the specified width.

ScaleHeight(int $height)

Scale image proportionally by height. Use in templates with $ScaleHeight.

ScaleMaxHeight(int $height)

Proportionally scale down this image if it is taller than the specified height.

CropWidth(int $width)

Crop image on X axis if it exceeds specified width. Retain height.

CropHeight(int $height)

Crop image on Y axis if it exceeds specified height. Retain width.

FillMax(int $width, int $height)

Crop this image to the aspect ratio defined by the specified width and height, then scale down the image to those dimensions if it exceeds them.

Fill(int $width, int $height)

Resize and crop image to fill specified dimensions.

Quality(int $quality)

Set the quality of the resampled image

CMSThumbnail()

Default CMS thumbnail

StripThumbnail()

Generates a thumbnail for use in the gridfield view

PreviewThumbnail()

Get preview for this file

Thumbnail(int $width, int $height)

Default thumbnail generation for Images

ThumbnailIcon(int $width, int $height)

Thubnail generation for all file types.

IconTag()

Get HTML for img containing the icon for this file

string
ThumbnailURL(int $width, int $height)

Get URL to thumbnail of the given size.

string
getIcon()

Return the relative URL of an icon for the file type, based on the {@link appCategory()} value.

getImageBackend()

Get Image_Backend instance for this image

$this
setImageBackend(Image_Backend $backend)

No description

int
getWidth()

Get the width of this image.

int
getHeight()

Get the height of this image.

int
getOrientation()

Get the orientation of this image.

bool
isSize(int $width, int $height)

Determine if this image is of the specified size

bool
isWidth(int $width)

Determine if this image is of the specified width

bool
isHeight(int $height)

Determine if this image is of the specified width

manipulateImage(string $variant, callable $callback)

Wrapper for manipulate that passes in and stores Image_Backend objects instead of tuples

manipulate(string $variant, callable $callback)

Generate a new DBFile instance using the given callback if it hasn't been created yet, or return the existing one if it has.

string
variantName(string $format, $arg = null)

Name a variant based on a format with arbitrary parameters

array|null
variantParts($variantName)

Reverses {@link variantName()}.

bool
IsLazyLoaded()

Determine whether the image should be lazy loaded

LazyLoad(mixed $lazyLoad)

Set the lazy loading state for this Image

static 
get_shortcodes()

No description

from  File
static File|null
find(string $filename)

Find a File object by the given filename.

from  File
string
Link()

Just an alias function to keep a consistent API with SiteTree

from  File
RelativeLink() deprecated

No description

from  File
string
AbsoluteLink()

Just an alias function to keep a consistent API with SiteTree

from  File
string
getTreeTitle()

No description

from  File
bool
hasRestrictedAccess()

Check if the File has a CanViewType set or inherited at "LoggedInUsers or above"

from  File
bool
isTrackedFormUpload()

If the file was uploaded via a form and tracked in the database

from  File
string
getStatusTitle()

Get title for current file status

from  File
static string
get_app_category(string $ext)

Returns a category based on the file extension.

from  File
static array
get_category_extensions(array|string $categories)

For a category or list of categories, get the list of file extensions

from  File
string
appCategory()

Returns a category based on the file extension.

from  File
onAfterUpload()

Should be called after the file was uploaded

from  File
onAfterRevertToLive()

No description

from  File
bool
updateFilesystem()

This will check if the parent record and/or name do not match the name on the underlying DBFile record, and if so, copy this file to the new location, and update the record to point to this new file.

from  File
true|null
collateDescendants(string $condition, array $collator)

Collate selected descendants of this page.

from  File
string
getSourceURL(bool $grant = true)

Get URL, but without resampling.

from  File
string
generateFilename()

Get expected value of Filename tuple value. Will be used to trigger a file move on draft stage.

from  File
string
renameFile(string $newName)

Rename this file.

from  File
string
copyFile(string $newName)

Copy to new filename.

from  File
$this
setFilename(string $filename)

Update the ParentID and Name for the given filename.

from  File
string
getExtension()

Returns the file extension

from  File
static string
get_file_extension(string $filename)

Gets the extension of a filepath or filename, by stripping away everything before the last "dot".

from  File
static string
get_icon_for_extension(string $extension)

Given an extension, determine the icon that should be used

from  File
string
getFileType()

Return the type of file for the given extension on the current file name.

from  File
static string
get_file_type(string $filename)

Get descriptive type of file based on filename

from  File
string|false
getSize()

Returns the size of the file type in an appropriate format.

from  File
static string
format_size(int $size)

Formats a file size (eg: (int)42 becomes string '42 bytes')

from  File
static int
ini2bytes(string $iniValue) deprecated

Convert a php.ini value (eg: 512M) to bytes

from  File
static string
get_class_for_file_extension($ext)

Maps a {@link File} subclass to a specific extension.

from  File
static 
set_class_for_file_extension($exts, $class)

See {@link get_class_for_file_extension()}.

from  File
array
setFromLocalFile(string $path, string $filename = null, string $hash = null, string $variant = null, array $config = [])

Assign a local file to the backend.

from  File
array
setFromStream(resource $stream, string $filename, string $hash = null, string $variant = null, array $config = [])

Assign a stream to the backend

from  File
array
setFromString(string $data, string $filename, string $hash = null, string $variant = null, array $config = [])

Assign a set of data to the backend

from  File
string
forTemplate()

Return a html5 tag of the appropriate for this file (normally img or a)

from  File
string
getTag()

Return a html5 tag of the appropriate for this file (normally img or a)

from  File
BackLinkTracking()

Get the back-link tracking objects that link to this file via HTML fields

from  File
int
BackLinkTrackingCount()

Count of backlinks Note: Doesn't filter broken records

from  File
static string
join_paths($part = null)

Joins one or more segments together to build a Filename identifier.

from  File
bool
deleteFile()

Delete a file (and all variants).

from  File
string
getVisibility()

Determine visibility of the given file

from  File
publishFile()

Publicly expose the file (and all variants) identified by the given filename and hash {see AssetStore::publish}

from  File
protectFile()

Protect a file (and all variants) from public access, identified by the given filename and hash.

from  File
grantFile()

Ensures that access to the specified protected file is granted for the current user.

from  File
revokeFile()

Revoke access to the given file for the current user.

from  File
bool
canViewFile()

Check if the current user can view the given file.

from  File
string
CMSEditLink()

No description

from  File
string
PreviewLink(string $action = null)

No description

providePermissions()

Return a map of permission codes to add to the dropdown shown in the Security section of the CMS.

from  File
static array
getAllowedExtensions()

Get the list of globally allowed file extensions for file uploads.

from  File
Parent()

Returns parent File

from  File
Owner()

Returns Member object of file owner.

from  File
FileLink[]
BackLinks()

List of SiteTreeLink objects attached to this page

from  File
static bool
getLazyLoadingEnabled()

No description

Details

mixed __call(string $method, array $arguments)

Attempts to locate and call a method dynamically added to a class at runtime if a default cannot be located

You can add extra methods to a class using {@link Extensions}, {@link Object::createMethod()} or {@link Object::addWrapperMethod()}

Parameters

string $method
array $arguments

Return Value

mixed

Exceptions

BadMethodCallException

bool hasMethod(string $method)

Return TRUE if a method exists on this object

This should be used rather than PHP's inbuild method_exists() as it takes into account methods added via extensions

Parameters

string $method

Return Value

bool

array allMethodNames(bool $custom = false)

Return the names of all the methods available on this object

Parameters

bool $custom

include methods added dynamically at runtime

Return Value

array

static bool add_extension(string $classOrExtension, string $extension = null)

Add an extension to a specific class.

The preferred method for adding extensions is through YAML config, since it avoids autoloading the class, and is easier to override in more specific configurations.

As an alternative, extensions can be added to a specific class directly in the {@link Object::$extensions} array. See {@link SiteTree::$extensions} for examples. Keep in mind that the extension will only be applied to new instances, not existing ones (including all instances created through {@link singleton()}).

Parameters

string $classOrExtension

Class that should be extended - has to be a subclass of {@link Object}

string $extension

Subclass of {@link Extension} with optional parameters as a string, e.g. "Versioned" or "Translatable('Param')"

Return Value

bool

Flag if the extension was added

See also

http://doc.silverstripe.org/framework/en/trunk/reference/dataextension

static remove_extension(string $extension)

Remove an extension from a class.

Note: This will not remove extensions from parent classes, and must be called directly on the class assigned the extension.

Keep in mind that this won't revert any datamodel additions of the extension at runtime, unless its used before the schema building kicks in (in your _config.php). Doesn't remove the extension from any {@link Object} instances which are already created, but will have an effect on new extensions. Clears any previously created singletons through {@link singleton()} to avoid side-effects from stale extension information.

Parameters

string $extension

class name of an {@link Extension} subclass, without parameters

static array get_extensions(string $class = null, bool $includeArgumentString = false)

Parameters

string $class

If omitted, will get extensions for the current class

bool $includeArgumentString

Include the argument string in the return array, FALSE would return array("Versioned"), TRUE returns array("Versioned('Stage','Live')").

Return Value

array

Numeric array of either {@link DataExtension} class names, or eval'ed class name strings with constructor arguments.

static array|null get_extra_config_sources(string $class = null)

Get extra config sources for this class

Parameters

string $class

Name of class. If left null will return for the current class

Return Value

array|null

static bool has_extension(string $classOrExtension, string $requiredExtension = null, bool $strict = false)

Return TRUE if a class has a specified extension.

This supports backwards-compatible format (static Object::has_extension($requiredExtension)) and new format ($object->has_extension($class, $requiredExtension))

Parameters

string $classOrExtension

Class to check extension for, or the extension name to check if the second argument is null.

string $requiredExtension

If the first argument is the parent class, this is the extension to check. If left null, the first parameter will be treated as the extension.

bool $strict

if the extension has to match the required extension and not be a subclass

Return Value

bool

Flag if the extension exists

array invokeWithExtensions(string $method, mixed $a1 = null, mixed $a2 = null, mixed $a3 = null, mixed $a4 = null, mixed $a5 = null, mixed $a6 = null, mixed $a7 = null)

Calls a method if available on both this object and all applied {@link Extensions}, and then attempts to merge all results into an array

Parameters

string $method

the method name to call

mixed $a1
mixed $a2
mixed $a3
mixed $a4
mixed $a5
mixed $a6
mixed $a7

Return Value

array

List of results with nulls filtered out

array extend(string $method, mixed $a1 = null, mixed $a2 = null, mixed $a3 = null, mixed $a4 = null, mixed $a5 = null, mixed $a6 = null, mixed $a7 = null)

Run the given function on all of this object's extensions. Note that this method originally returned void, so if you wanted to return results, you're hosed

Currently returns an array, with an index resulting every time the function is called. Only adds returns if they're not NULL, to avoid bogus results from methods just defined on the parent extension. This is important for permission-checks through extend, as they use min() to determine if any of the returns is FALSE. As min() doesn't do type checking, an included NULL return would fail the permission checks.

The extension methods are defined during {@link __construct()} in {@link defineMethods()}.

Parameters

string $method

the name of the method to call on each extension

mixed $a1
mixed $a2
mixed $a3
mixed $a4
mixed $a5
mixed $a6
mixed $a7

Return Value

array

Extension|null getExtensionInstance(string $extension)

Get an extension instance attached to this object by name.

Parameters

string $extension

Return Value

Extension|null

bool hasExtension(string $extension)

Returns TRUE if this object instance has a specific extension applied in {@link $extension_instances}. Extension instances are initialized at constructor time, meaning if you use {@link add_extension()} afterwards, the added extension will just be added to new instances of the extended class. Use the static method {@link has_extension()} to check if a class (not an instance) has a specific extension.

Caution: Don't use singleton()->hasExtension() as it will give you inconsistent results based on when the singleton was first accessed.

Parameters

string $extension

Classname of an {@link Extension} subclass without parameters

Return Value

bool

Extension[] getExtensionInstances()

Get all extension instances for this specific object instance.

See {@link get_extensions()} to get all applied extension classes for this class (not the instance).

This method also provides lazy-population of the extension_instances property.

Return Value

Extension[]

Map of {@link DataExtension} instances, keyed by classname.

static Injectable create(array ...$args)

An implementation of the factory method, allows you to create an instance of a class

This method will defer class substitution to the Injector API, which can be customised via the Config API to declare substitution classes.

This can be called in one of two ways - either calling via the class directly, or calling on Object and passing the class name as the first parameter. The following are equivalent: $list = DataList::create('SiteTree'); $list = SiteTree::get();

Parameters

array ...$args

Return Value

Injectable

static Injectable singleton(string $class = null)

Creates a class instance by the "singleton" design pattern.

It will always return the same instance for this class, which can be used for performance reasons and as a simple way to access instance methods which don't rely on instance data (e.g. the custom SilverStripe static handling).

Parameters

string $class

Optional classname to create, if the called class should not be used

Return Value

Injectable

The singleton instance

static Config_ForClass config()

Get a configuration accessor for this class. Short hand for Config::inst()->get($this->class, .....).

Return Value

Config_ForClass

mixed stat(string $name) deprecated

deprecated 5.0 Use ->config()->get() instead

Get inherited config value

Parameters

string $name

Return Value

mixed

mixed uninherited(string $name)

Gets the uninherited value for the given config option

Parameters

string $name

Return Value

mixed

$this set_stat(string $name, mixed $value) deprecated

deprecated 5.0 Use ->config()->set() instead

Update the config value for a given property

Parameters

string $name
mixed $value

Return Value

$this

__construct(array $record = null, $isSingleton = false, array $queryParams = [])

Construct a new DataObject.

Parameters

array $record

Initial record content, or rehydrated record content, depending on $creationType

$isSingleton
array $queryParams

List of DataQuery params necessary to lazy load, or load related objects.

bool __isset(string $property)

Check if a field exists on this object or its failover.

Note that, unlike the core isset() implementation, this will return true if the property is defined and set to null.

Parameters

string $property

Return Value

bool

mixed __get(string $property)

Get the value of a property/field on this object. This will check if a method called get{$property} exists, then check if a field is available using {@link ViewableData::getField()}, then fall back on a failover object.

Parameters

string $property

Return Value

mixed

__set(string $property, mixed $value)

Set a property/field on this object. This will check for the existence of a method called set{$property}, then use the {@link ViewableData::setField()} method.

Parameters

string $property
mixed $value

setFailover(ViewableData $failover)

Set a failover object to attempt to get data from if it is not present on this object.

Parameters

ViewableData $failover

ViewableData|null getFailover()

Get the current failover object if set

Return Value

ViewableData|null

bool hasField(string $field)

Returns true if the given field exists in a database column on any of the objects tables and optionally look up a dynamic getter with get().

Parameters

string $field

Return Value

bool

mixed getField(string $field)

Gets the value of a field.

Called by {@link __get()} and any getFieldName() methods you might create.

Parameters

string $field

Return Value

mixed

$this setField(string $fieldName, mixed $val)

Set the value of the field Called by {@link __set()} and any setFieldName() methods you might create.

Parameters

string $fieldName

Name of the field

mixed $val

New field value

Return Value

$this

defineMethods()

Adds methods from the extensions.

Called by Object::__construct() once per class.

ViewableData_Customised customise(array|ViewableData $data)

Merge some arbitrary data in with this object. This method returns a {@link ViewableData_Customised} instance with references to both this and the new custom data.

Note that any fields you specify will take precedence over the fields on this object.

Parameters

array|ViewableData $data

Return Value

ViewableData_Customised

abstract bool exists()

Determine if this container has a valid value

Return Value

bool

Flag as to whether the file exists

string __toString()

Return Value

string

the class name

ViewableData getCustomisedObj()

Return Value

ViewableData

setCustomisedObj(ViewableData $object)

Parameters

ViewableData $object

string castingHelper(string $field)

Return the "casting helper" (a piece of PHP code that when evaluated creates a casted value object) for a field on this object. This helper will be a subclass of DBField.

Parameters

string $field

Return Value

string

Casting helper As a constructor pattern, and may include arguments.

Exceptions

Exception

string castingClass(string $field)

Get the class name a field on this object will be casted to.

Parameters

string $field

Return Value

string

string escapeTypeForField(string $field)

Return the string-format type for the given field.

Parameters

string $field

Return Value

string

'xml'|'raw'

DBHTMLText renderWith(string|array|SSViewer $template, array $customFields = null)

Render this object into the template, and get the result as a string. You can pass one of the following as the $template parameter:

  • a template name (e.g. Page)
  • an array of possible template names - the first valid one will be used
  • an SSViewer instance

Parameters

string|array|SSViewer $template

the template to render into

array $customFields

fields to customise() the object with before rendering

Return Value

DBHTMLText

object|DBField obj(string $fieldName, array $arguments = [], bool $cache = false, string $cacheName = null)

Get the value of a field on this object, automatically inserting the value into any available casting objects that have been specified.

Parameters

string $fieldName
array $arguments
bool $cache

Cache this object

string $cacheName

a custom cache name

Return Value

object|DBField

object|DBField cachedCall(string $field, array $arguments = [], string $identifier = null)

A simple wrapper around {@link ViewableData::obj()} that automatically caches the result so it can be used again without re-running the method.

Parameters

string $field
array $arguments
string $identifier

an optional custom cache identifier

Return Value

object|DBField

bool hasValue(string $field, array $arguments = null, bool $cache = true)

Returns true if the given method/parameter has a value (Uses the DBField::hasValue if the parameter is a database field)

Parameters

string $field
array $arguments
bool $cache

Return Value

bool

string XML_val(string $field, array $arguments = [], bool $cache = false)

Get the string value of a field on this object that has been suitable escaped to be inserted directly into a template.

Parameters

string $field
array $arguments
bool $cache

Return Value

string

array getXMLValues(array $fields)

Get an array of XML-escaped values by field name

Parameters

array $fields

an array of field names

Return Value

array

ArrayIterator getIterator()

Return a single-item iterator so you can iterate over the fields of a single record.

This is useful so you can use a single record inside a <% control %> block in a template - and then use to access individual fields on this object.

Return Value

ArrayIterator

array getViewerTemplates(string $suffix = '')

Find appropriate templates for SSViewer to use to render this object

Parameters

string $suffix

Return Value

array

ViewableData Me()

When rendering some objects it is necessary to iterate over the object being rendered, to do this, you need access to itself.

Return Value

ViewableData

string ThemeDir() deprecated

deprecated 4.0.0:5.0.0 Use $resourcePath or $resourceURL template helpers instead

Return the directory if the current active theme (relative to the site root).

This method is useful for things such as accessing theme images from your template without hardcoding the theme page - e.g. .

This method should only be used when a theme is currently active. However, it will fall over to the current project directory.

Return Value

string

URL to the current theme

string CSSClasses(string $stopAtClass = self::class)

Get part of the current classes ancestry to be used as a CSS class.

This method returns an escaped string of CSS classes representing the current classes ancestry until it hits a stop point - e.g. "Page DataObject ViewableData".

Parameters

string $stopAtClass

the class to stop at (default: ViewableData)

Return Value

string

ViewableData_Debugger Debug()

Return debug information about this object that can be rendered into a template

Return Value

ViewableData_Debugger

static DataObjectSchema getSchema()

Get schema object

Return Value

DataObjectSchema

destroy()

Destroy all of this objects dependant objects and local caches.

You'll need to call this to get the memory of an object that has components or extensions freed.

DataObject duplicate(bool $doWrite = true, array|null|false $relations = null)

Create a duplicate of this node. Can duplicate many_many relations

Parameters

bool $doWrite

Perform a write() operation before returning the object. If this is true, it will create the duplicate in the database.

array|null|false $relations

List of relations to duplicate. Will default to cascade_duplicates if null. Set to 'false' to force none. Set to specific array of names to duplicate to override these. Note: If using versioned, this will additionally failover to owns config.

Return Value

DataObject

A duplicate of this node. The exact type will be the type of this node.

string getObsoleteClassName()

Return obsolete class name, if this is no longer a valid class

Return Value

string

string getClassName()

Gets name of this class

Return Value

string

$this setClassName(string $className)

Set the ClassName attribute. {@link $class} is also updated.

Warning: This will produce an inconsistent record, as the object instance will not automatically switch to the new subclass. Please use {@link newClassInstance()} for this purpose, or destroy and reinstanciate the record.

Parameters

string $className

The new ClassName attribute (a subclass of {@link DataObject})

Return Value

$this

DataObject newClassInstance(string $newClassName)

Create a new instance of a different class from this object's record.

This is useful when dynamically changing the type of an instance. Specifically, it ensures that the instance of the class is a match for the className of the record. Don't set the {@link DataObject->class} or {@link DataObject->ClassName} property manually before calling this method, as it will confuse change detection.

If the new class is different to the original class, defaults are populated again because this will only occur automatically on instantiation of a DataObject if there is no record, or the record has no ID. In this case, we do have an ID but we still need to repopulate the defaults.

Parameters

string $newClassName

The name of the new class

Return Value

DataObject

The new instance of the new class, The exact type will be of the class name provided.

bool isEmpty()

Returns TRUE if all values (other than "ID") are considered empty (by weak boolean comparison).

Return Value

bool

string i18n_pluralise(string $count)

Pluralise this item given a specific count.

E.g. "0 Pages", "1 File", "3 Images"

Parameters

string $count

Return Value

string

string singular_name()

Get the user friendly singular name of this DataObject.

If the name is not defined (by redefining $singular_name in the subclass), this returns the class name.

Return Value

string

User friendly singular name of this DataObject

string i18n_singular_name()

Get the translated user friendly singular name of this DataObject same as singular_name() but runs it through the translating function

Translating string is in the form: $this->class.SINGULARNAME Example: Page.SINGULARNAME

Return Value

string

User friendly translated singular name of this DataObject

string plural_name()

Get the user friendly plural name of this DataObject If the name is not defined (by renaming $plural_name in the subclass), this returns a pluralised version of the class name.

Return Value

string

User friendly plural name of this DataObject

string i18n_plural_name()

Get the translated user friendly plural name of this DataObject Same as plural_name but runs it through the translation function Translation string is in the form: $this->class.PLURALNAME Example: Page.PLURALNAME

Return Value

string

User friendly translated plural name of this DataObject

string getTitle()

Standard implementation of a title/label for a specific record. Tries to find properties 'Title' or 'Name', and falls back to the 'ID'. Useful to provide user-friendly identification of a record, e.g. in errormessages or UI-selections.

Overload this method to have a more specialized implementation, e.g. for an Address record this could be: function getTitle() { return "{$this->StreetNumber} {$this->StreetName} {$this->City}"; }

Return Value

string

DataObject data()

Returns the associated database record - in this case, the object itself.

This is included so that you can call $dataOrController->data() and get a DataObject all the time.

Return Value

DataObject

Associated database record

array toMap()

Convert this object to a map.

Note that it has the following quirks:

  • custom getters, including those that adjust the result of database fields, won't be executed
  • NULL values won't be returned.

Return Value

array

The data as a map.

array getQueriedDatabaseFields()

Return all currently fetched database fields.

This function is similar to toMap() but doesn't trigger the lazy-loading of all unfetched fields. Obviously, this makes it a lot faster.

Return Value

array

The data as a map.

DataObject update(array $data)

Update a number of fields on this object, given a map of the desired changes.

The field names can be simple names, or you can use a dot syntax to access $has_one relations. For example, array("Author.FirstName" => "Jim") will set $this->Author()->FirstName to "Jim".

Doesn't write the main object, but if you use the dot syntax, it will write() the related objects that it alters.

When using this method with user supplied data, it's very important to whitelist the allowed keys.

Parameters

array $data

A map of field name to data values to update.

Return Value

DataObject

$this

DataObject castedUpdate(array $data)

Pass changes as a map, and try to get automatic casting for these fields.

Doesn't write to the database. To write the data, use the write() method.

Parameters

array $data

A map of field name to data values to update.

Return Value

DataObject

$this

bool merge(DataObject $rightObj, string $priority = 'right', bool $includeRelations = true, bool $overwriteWithEmpty = false)

Merges data and relations from another object of same class, without conflict resolution. Allows to specify which dataset takes priority in case its not empty.

has_one-relations are just transferred with priority 'right'. has_many and many_many-relations are added regardless of priority.

Caution: has_many/many_many relations are moved rather than duplicated, meaning they are not connected to the merged object any longer. Caution: Just saves updated has_many/many_many relations to the database, doesn't write the updated object itself (just writes the object-properties). Caution: Does not delete the merged object. Caution: Does now overwrite Created date on the original object.

Parameters

DataObject $rightObj
string $priority

left|right Determines who wins in case of a conflict (optional)

bool $includeRelations

Merge any existing relations (optional)

bool $overwriteWithEmpty

Overwrite existing left values with empty right values. Only applicable with $priority='right'. (optional)

Return Value

bool

$this forceChange()

Forces the record to think that all its data has changed.

Doesn't write to the database. Force-change preseved until next write. Existing CHANGE_VALUE or CHANGE_STRICT values are preserved.

Return Value

$this

ValidationResult doValidate()

Public accessor for {see DataObject::validate()}

Return Value

ValidationResult

ArrayList findCascadeDeletes(bool $recursive = true, ArrayList $list = null)

Find all objects that will be cascade deleted if this object is deleted

Notes:

  • If this object is versioned, objects will only be searched in the same stage as the given record.
  • This will only be useful prior to deletion, as post-deletion this record will no longer exist.

Parameters

bool $recursive

True if recursive

ArrayList $list

Optional list to add items to

Return Value

ArrayList

list of objects

DataObject populateDefaults()

Load the default values in from the self::$defaults array.

Will traverse the defaults of the current class and all its parent classes. Called by the constructor when creating new records.

Return Value

DataObject

$this

write(bool $showDebug = false, bool $forceInsert = false, bool $forceWrite = false, bool|array $writeComponents = false)

Writes all changes to this object to the database.

  • It will insert a record whenever ID isn't set, otherwise update.
  • All relevant tables will be updated.
  • $this->onBeforeWrite() gets called beforehand.
  • Extensions such as Versioned will ammend the database-write to ensure that a version is saved.

Parameters

bool $showDebug

Show debugging information

bool $forceInsert

Run INSERT command rather than UPDATE, even if record already exists

bool $forceWrite

Write to database even if there are no changes

bool|array $writeComponents

Call write() on all associated component instances which were previously retrieved through {@link getComponent()}, {@link getComponents()} or {@link getManyManyComponents()}. Default to false. The parameter can also be provided in the form of an array: ['recursive' => true, skip => ['Page'=>[1,2,3]]. This avoid infinite loops when one DataObject are components of each other.

Exceptions

ValidationException

Exception that can be caught and handled by the calling function

writeRelations()

Writes cached relation lists to the database, if possible

DataObject writeComponents(bool $recursive = false, array $skip = [])

Write the cached components to the database. Cached components could refer to two different instances of the same record.

Parameters

bool $recursive

Recursively write components

array $skip

List of DataObject references to skip

Return Value

DataObject

$this

delete()

Delete this data object.

$this->onBeforeDelete() gets called. Note that in Versioned objects, both Stage and Live will be deleted.

static delete_by_id(string $className, int $id)

Delete the record with the given ID.

Parameters

string $className

The class name of the record to be deleted

int $id

ID of record to be deleted

array getClassAncestry()

Get the class ancestry, including the current class name.

The ancestry will be returned as an array of class names, where the 0th element will be the class that inherits directly from DataObject, and the last element will be the current class.

Return Value

array

Class ancestry

DataObject getComponent(string $componentName)

Return a unary component object from a one to one relationship, as a DataObject.

If no component is available, an 'empty component' will be returned for non-polymorphic relations, or for polymorphic relations with a class set.

Parameters

string $componentName

Name of the component

Return Value

DataObject

The component object. It's exact type will be that of the component.

Exceptions

Exception

$this setComponent(string $componentName, DataObject|null $item)

Assign an item to the given component

Parameters

string $componentName
DataObject|null $item

Return Value

$this

HasManyList|UnsavedRelationList getComponents(string $componentName, int|array $id = null)

Returns a one-to-many relation as a HasManyList

Parameters

string $componentName

Name of the component

int|array $id

Optional ID(s) for parent of this relation, if not the current record

Return Value

HasManyList|UnsavedRelationList

The components of the one-to-many relationship.

string getRelationClass(string $relationName)

Find the foreign class of a relation on this DataObject, regardless of the relation type.

Parameters

string $relationName

Relation name.

Return Value

string

Class name, or null if not found.

string getRelationType(string $component)

Given a relation name, determine the relation type

Parameters

string $component

Name of component

Return Value

string

has_one, has_many, many_many, belongs_many_many or belongs_to

DataList|DataObject inferReciprocalComponent(string $remoteClass, string $remoteRelation)

Given a relation declared on a remote class, generate a substitute component for the opposite side of the relation.

Notes on behaviour:

  • This can still be used on components that are defined on both sides, but do not need to be.
  • All has_ones on remote class will be treated as local has_many, even if they are belongs_to
  • Polymorphic relationships do not have two natural endpoints (only on one side) and thus attempting to infer them will return nothing.
  • Cannot be used on unsaved objects.

Parameters

string $remoteClass
string $remoteRelation

Return Value

DataList|DataObject

The component, either as a list or single object

Exceptions

BadMethodCallException
InvalidArgumentException

ManyManyList|UnsavedRelationList getManyManyComponents(string $componentName, int|array $id = null)

Returns a many-to-many component, as a ManyManyList.

Parameters

string $componentName

Name of the many-many component

int|array $id

Optional ID for parent of this relation, if not the current record

Return Value

ManyManyList|UnsavedRelationList

The set of components

string|array hasOne()

Return the class of a one-to-one component. If $component is null, return all of the one-to-one components and their classes. If the selected has_one is a polymorphic field then 'DataObject' will be returned for the type.

Return Value

string|array

The class of the one-to-one component, or an array of all one-to-one components and their classes.

string|array belongsTo(bool $classOnly = true)

Returns the class of a remote belongs_to relationship. If no component is specified a map of all components and their class name will be returned.

Parameters

bool $classOnly

If this is TRUE, than any has_many relationships in the form "ClassName.Field" will have the field data stripped off. It defaults to TRUE.

Return Value

string|array

string|array|false hasMany(bool $classOnly = true)

Gets the class of a one-to-many relationship. If no $component is specified then an array of all the one-to-many relationships and their classes will be returned.

Parameters

bool $classOnly

If this is TRUE, than any has_many relationships in the form "ClassName.Field" will have the field data stripped off. It defaults to TRUE.

Return Value

string|array|false

array|null manyManyExtraFields()

Return the many-to-many extra fields specification.

If you don't specify a component name, it returns all extra fields for all components available.

Return Value

array|null

array|null manyMany()

Return information about a many-to-many component.

The return value is an array of (parentclass, childclass). If $component is null, then all many-many components are returned.

Return Value

array|null

An array of (parentclass, childclass), or an array of all many-many components

See also

DataObjectSchema::manyManyComponent

array|false database_extensions(string $class)

This returns an array (if it exists) describing the database extensions that are required, or false if none

This is experimental, and is currently only a Postgres-specific enhancement.

Parameters

string $class

Return Value

array|false

SearchContext getDefaultSearchContext()

Generates a SearchContext to be used for building and processing a generic search form for properties on this object.

Return Value

SearchContext

FieldList scaffoldSearchFields(array $_params = null)

Determine which properties on the DataObject are searchable, and map them to their default {@link FormField} representations. Used for scaffolding a searchform for {@link ModelAdmin}.

Some additional logic is included for switching field labels, based on how generic or specific the field type is.

Used by {@link SearchContext}.

Parameters

array $_params

'fieldClasses': Associative array of field names as keys and FormField classes as values 'restrictFields': Numeric array of a field name whitelist

Return Value

FieldList

FieldList scaffoldFormFields(array $_params = null)

Scaffold a simple edit form for all properties on this dataobject, based on default {@link FormField} mapping in {@link DBField::scaffoldFormField()}.

Field labels/titles will be auto generated from {@link DataObject::fieldLabels()}.

Parameters

array $_params

Associative array passing through properties to {@link FormScaffolder}.

Return Value

FieldList

FieldList getCMSFields()

List of basic content editable file fields.

Note: These fields no longer affect the edit form in asset-admin. To add fields to the file edit form in asset-admin, you will need to add an extension to FileFormFactory and use the updateFormFields() hook.

Return Value

FieldList

Returns a TabSet for usage within the CMS - don't use for frontend forms.

FieldList getCMSActions()

need to be overload by solid dataobject, so that the customised actions of that dataobject, including that dataobject's extensions customised actions could be added to the EditForm.

Return Value

FieldList

an Empty FieldList(); need to be overload by solid subclass

CompositeValidator getCMSCompositeValidator()

When extending this class and overriding this method, you will need to instantiate the CompositeValidator by calling parent::getCMSCompositeValidator(). This will ensure that the appropriate extension point is also invoked.

You can also update the CompositeValidator by creating an Extension and implementing the updateCMSCompositeValidator(CompositeValidator $compositeValidator) method.

Return Value

CompositeValidator

See also

CompositeValidator for examples of implementation

FieldList getFrontEndFields(array $params = null)

Used for simple frontend forms without relation editing or {@link TabSet} behaviour. Uses {@link scaffoldFormFields()} by default. To customize, either overload this method in your subclass, or extend it by {@link DataExtension->updateFrontEndFields()}.

Parameters

array $params

See {@link scaffoldFormFields()}

Return Value

FieldList

Always returns a simple field collection without TabSet.

array getChangedFields(bool|array $databaseFieldsOnly = false, int $changeLevel = self::CHANGE_STRICT)

Return the fields that have changed since the last write.

The change level affects what the functions defines as "changed":

  • Level CHANGE_STRICT (integer 1) will return strict changes, even !== ones.
  • Level CHANGE_VALUE (integer 2) is more lenient, it will only return real data changes, for example a change from 0 to null would not be included.

Example return: array( 'Title' = array('before' => 'Home', 'after' => 'Home-Changed', 'level' => DataObject::CHANGE_VALUE) )

Parameters

bool|array $databaseFieldsOnly

Filter to determine which fields to return. Set to true to return all database fields, or an array for an explicit filter. false returns all fields.

int $changeLevel

The strictness of what is defined as change. Defaults to strict

Return Value

array

bool isChanged(string $fieldName = null, int $changeLevel = self::CHANGE_STRICT)

Uses {@link getChangedFields()} to determine if fields have been changed since loading them from the database.

Parameters

string $fieldName

Name of the database field to check, will check for any if not given

int $changeLevel

See {@link getChangedFields()}

Return Value

bool

$this setCastedField(string $fieldName, mixed $value)

Set the value of the field, using a casting object.

This is useful when you aren't sure that a date is in SQL format, for example. setCastedField() can also be used, by forms, to set related data. For example, uploaded images can be saved into the Image table.

Parameters

string $fieldName
mixed $value

New field value

Return Value

$this

bool hasDatabaseField(string $field)

Returns true if the given field exists as a database column

Parameters

string $field

Name of the field

Return Value

bool

bool can(string $perm, Member $member = null, array $context = [])

Returns true if the member is allowed to do the given action.

See {@link extendedCan()} for a more versatile tri-state permission control.

Parameters

string $perm

The permission to be checked, such as 'View'.

Member $member

The member whose permissions need checking. Defaults to the currently logged in user.

array $context

Additional $context to pass to extendedCan()

Return Value

bool

True if the the member is allowed to do the given action

bool|null extendedCan(string $methodName, Member|int $member, array $context = [])

Process tri-state responses from permission-alterting extensions. The extensions are expected to return one of three values:

  • false: Disallow this permission, regardless of what other extensions say
    • true: Allow this permission, as long as no other extensions return false
    • NULL: Don't affect the outcome

This method itself returns a tri-state value, and is designed to be used like this:

$extended = $this->extendedCan('canDoSomething', $member); if($extended !== null) return $extended; else return $normalValue;

Parameters

string $methodName

Method on the same object, e.g. {@link canEdit()}

Member|int $member
array $context

Optional context

Return Value

bool|null

bool canView(Member $member = null)

Parameters

Member $member

Return Value

bool

bool canEdit(Member $member = null)

Check if this file can be modified

Parameters

Member $member

Return Value

bool

bool canDelete(Member $member = null)

Check if this file can be deleted

Parameters

Member $member

Return Value

bool

bool canCreate(Member $member = null, array $context = [])

Check if a file can be created

Parameters

Member $member
array $context

Additional context-specific data which might affect whether (or where) this object could be created.

Return Value

bool

string debug()

Debugging used by Debug::show()

Return Value

string

HTML data representing this object

DBField dbObject(string $fieldName)

Return the DBField object that represents the given field.

This works similarly to obj() with 2 key differences:

  • it still returns an object even when the field has no value.
  • it only matches fields and not methods
  • it matches foreign keys generated by has_one relationships, eg, "ParentID"

Parameters

string $fieldName

Name of the field

Return Value

DBField

The field as a DBField object

mixed relObject(string $fieldPath)

Traverses to a DBField referenced by relationships between data objects.

The path to the related field is specified with dot separated syntax (eg: Parent.Child.Child.FieldName).

If a relation is blank, this will return null instead. If a relation name is invalid (e.g. non-relation on a parent) this can throw a LogicException.

Parameters

string $fieldPath

List of paths on this object. All items in this path must be ViewableData implementors

Return Value

mixed

DBField of the field on the object or a DataList instance.

Exceptions

LogicException

If accessing invalid relations

mixed relField(string $fieldName)

Traverses to a field referenced by relationships between data objects, returning the value The path to the related field is specified with dot separated syntax (eg: Parent.Child.Child.FieldName)

Parameters

string $fieldName

string

Return Value

mixed

Will return null on a missing value

string getReverseAssociation(string $className)

Temporary hack to return an association name, based on class, to get around the mangle of having to deal with reverse lookup of relationships to determine autogenerated foreign keys.

Parameters

string $className

Return Value

string

static DataList get(string $callerClass = null, string|array $filter = "", string|array $sort = "", string $join = "", string|array $limit = null, string $containerClass = DataList::class)

Return all objects matching the filter sub-classes are automatically selected and included

Parameters

string $callerClass

The class of objects to be returned

string|array $filter

A filter to be inserted into the WHERE clause. Supports parameterised queries. See SQLSelect::addWhere() for syntax examples.

string|array $sort

A sort expression to be inserted into the ORDER BY clause. If omitted, self::$default_sort will be used.

string $join

Deprecated 3.0 Join clause. Use leftJoin($table, $joinClause) instead.

string|array $limit

A limit expression to be inserted into the LIMIT clause.

string $containerClass

The container class to return the results in.

Return Value

DataList

The objects matching the filter, in the class specified by $containerClass

static DataObject|null get_one(string $callerClass, string|array $filter = "", bool $cache = true, string $orderby = "")

Return the first item matching the given query.

The object returned is cached, unlike DataObject::get()->first() {@link DataList::first()} and DataObject::get()->last() {@link DataList::last()}

The filter argument supports parameterised queries (see SQLSelect::addWhere() for syntax examples). Because of that (and differently from e.g. DataList::filter()) you need to manually escape the field names: $member = DataObject::get_one('Member', [ '"FirstName"' => 'John' ]);

Parameters

string $callerClass

The class of objects to be returned

string|array $filter

A filter to be inserted into the WHERE clause.

bool $cache

Use caching

string $orderby

A sort expression to be inserted into the ORDER BY clause.

Return Value

DataObject|null

The first item matching the query

DataObject flushCache(bool $persistent = true)

Flush the cached results for all relations (has_one, has_many, many_many) Also clears any cached aggregate data.

Parameters

bool $persistent

When true will also clear persistent data stored in the Cache system. When false will just clear session-local cached data

Return Value

DataObject

$this

static flush_and_destroy_cache()

Flush the get_one global cache and destroy associated objects.

static reset()

Reset all global caches associated with DataObject.

static DataObject get_by_id(string|int $classOrID, int|bool $idOrCache = null, bool $cache = true)

Return the given element, searching by ID.

This can be called either via DataObject::get_by_id(MyClass::class, $id) or MyClass::get_by_id($id)

The object returned is cached, unlike DataObject::get()->byID() {@link DataList::byID()}

Parameters

string|int $classOrID

The class of the object to be returned, or id if called on target class

int|bool $idOrCache

The id of the element, or cache if called on target class

bool $cache

See {@link get_one()}

Return Value

DataObject

The element

string baseTable()

Get the name of the base table for this object

Return Value

string

string baseClass()

Get the base class for this object

Return Value

string

array getSourceQueryParams()

Return Value

array

See also

$sourceQueryParams

array getInheritableQueryParams()

Get list of parameters that should be inherited to relations on this object

Return Value

array

setSourceQueryParams(array $array)

Parameters

array $array

See also

$sourceQueryParams

setSourceQueryParam(string $key, string $value)

Parameters

string $key
string $value

See also

$sourceQueryParams

string getSourceQueryParam(string $key)

Parameters

string $key

Return Value

string

See also

$sourceQueryParams

requireTable()

Check the database schema and update it as necessary.

requireDefaultRecords()

Add default records to database. This function is called whenever the database is built, after the database tables have all been created. Overload this to add default records when the database is built, but make sure you call parent::requireDefaultRecords().

onAfterBuild()

Invoked after every database build is complete (including after table creation and default record population).

See {@link DatabaseAdmin::doBuild()} for context.

array searchableFields()

Get the default searchable fields for this object, as defined in the $searchable_fields list. If searchable fields are not defined on the data object, uses a default selection of summary fields.

Return Value

array

array fieldLabels(bool $includerelations = true)

Get any user defined searchable fields labels that exist. Allows overriding of default field names in the form interface actually presented to the user.

The reason for keeping this separate from searchable_fields, which would be a logical place for this functionality, is to avoid bloating and complicating the configuration array. Currently much of this system is based on sensible defaults, and this property would generally only be set in the case of more complex relationships between data object being required in the search interface.

Generates labels based on name of the field itself, if no static property {@link self::field_labels} exists.

Parameters

bool $includerelations

a boolean value to indicate if the labels returned include relation fields

Return Value

array

Array of all element labels

string fieldLabel(string $name)

Get a human-readable label for a single field, see {@link fieldLabels()} for more details.

Parameters

string $name

Name of the field

Return Value

string

Label of the field

array summaryFields()

Get the default summary fields for this object.

Return Value

array

array defaultSearchFilters()

Defines a default list of filters for the search context.

If a filter class mapping is defined on the data object, it is constructed here. Otherwise, the default filter specified in {@link DBField} is used.

Return Value

array

bool isInDB()

Return Value

bool

True if the object is in the database

static disable_subclass_access()

Temporarily disable subclass access in data object qeur

static enable_subclass_access()

array provideI18nEntities()

Returns the list of provided translations for this object.

Note: Pluralised forms are always returned in array format.

Example usage: class MyTestClass implements i18nEntityProvider { public function provideI18nEntities() { $entities = []; foreach($this->config()->get('my_static_array') as $key => $value) { $entities["MyTestClass.my_staticarray{$key}"] = $value; } $entities["MyTestClass.PLURALS"] = [ 'one' => 'A test class', 'other' => '{count} test classes', ] return $entities; } }

Example usage in {@link DataObject->provideI18nEntities()}.

You can ask textcollector to add the provided entity to a different module. Simply wrap the returned value for any item in an array with the format: [ 'default' => $defaultValue, 'module' => $module ]

class MyTestClass implements i18nEntityProvider { public function provideI18nEntities() { $entities = [ 'MyOtherModuleClass.MYENTITY' => [ 'default' => $value, 'module' => 'myothermodule', ] ]; } return $entities; }

Return Value

array

Map of keys to default values, which are strings in the default case, and array-form for pluralisations.

DataObject getJoin()

If selected through a many_many through relation, this is the instance of the joined record

Return Value

DataObject

$this setJoin(DataObject $object, string $alias = null)

Set joining object

Parameters

DataObject $object
string $alias

Alias

Return Value

$this

ArrayList findRelatedObjects(string $source, bool $recursive = true, ArrayList $list = null)

Find objects in the given relationships, merging them into the given list

Parameters

string $source

Config property to extract relationships from

bool $recursive

True if recursive

ArrayList $list

If specified, items will be added to this list. If not, a new instance of ArrayList will be constructed and returned

Return Value

ArrayList

The list of related objects

ArrayList mergeRelatedObjects(ArrayList $list, mixed $items)

Helper method to merge owned/owning items into a list.

Items already present in the list will be skipped.

Parameters

ArrayList $list

Items to merge into

mixed $items

List of new items to merge

Return Value

ArrayList

List of all newly added items that did not already exist in $list

string getUniqueKey()

Generate a unique key for data object the unique key uses the see DataObject::getUniqueKeyComponents() extension point so unique key modifiers such as versioned or fluent are covered i.e. same data object in different stages or different locales will produce different unique key

recommended use:

  • when you need unique key for caching purposes
  • when you need unique id on the front end (for example JavaScript needs to target specific element)

Return Value

string

Exceptions

Exception

$this setAttribute($name, $value)

Set an HTML attribute

Parameters

$name
$value

Return Value

$this

mixed|null getAttribute(string $name)

Retrieve the value of an HTML attribute

Parameters

string $name

Return Value

mixed|null

array getAttributes()

Allows customization through an 'updateAttributes' hook on the base class.

Existing attributes are passed in as the first argument and can be manipulated, but any attributes added through a subclass implementation won't be included.

Return Value

array

string getAttributesHTML(array $attributes = null)

Custom attributes to process. Falls back to {@link getAttributes()}.

If at least one argument is passed as a string, all arguments act as excludes, by name.

Parameters

array $attributes

Return Value

string

$this setAllowGeneration(bool $allow)

Set whether image resizes are allowed

Parameters

bool $allow

Return Value

$this

bool getAllowGeneration()

Check if resizes are allowed

Return Value

bool

DBFile existingOnly()

Return clone of self which promises to only return existing thumbnails

Return Value

DBFile

abstract string getString()

Return Value

string

Data from the file in this container

abstract resource getStream()

Return Value

resource

Data stream to the asset in this container

abstract string getURL(bool $grant = true)

Parameters

bool $grant

Ensures that the url for any protected assets is granted for the current user.

Return Value

string

public url to the asset in this container

abstract string getAbsoluteURL()

Return Value

string

The absolute URL to the asset in this container

abstract array|null getMetaData()

Get metadata for this file

Return Value

array|null

File information

abstract string getMimeType()

Get mime type

Return Value

string

Mime type for this file

abstract int getAbsoluteSize()

Return file size in bytes.

Return Value

int

abstract string getFilename()

Get value of filename

Return Value

string

abstract string getHash()

Get value of hash

Return Value

string

abstract string getVariant()

Get value of variant

Return Value

string

bool getIsImage()

Determine if a valid non-empty image exists behind this asset

Return Value

bool

AssetContainer Pad(int $width, int $height, string $backgroundColor = 'FFFFFF', int $transparencyPercent = 0)

Fit image to specified dimensions and fill leftover space with a solid colour (default white). Use in templates with $Pad.

Parameters

int $width

The width to size to

int $height

The height to size to

string $backgroundColor
int $transparencyPercent

Level of transparency

Return Value

AssetContainer

AssetContainer Resampled()

Forces the image to be resampled, if possible

Return Value

AssetContainer

updateURL(string $url)

Update the url to point to a resampled version if forcing

Parameters

string $url

AssetContainer ResizedImage(int $width, int $height)

Generate a resized copy of this image with the given width & height.

This can be used in templates with $ResizedImage but should be avoided, as it's the only image manipulation function which can skew an image.

Parameters

int $width

Width to resize to

int $height

Height to resize to

Return Value

AssetContainer

AssetContainer Fit(int $width, int $height)

Scale image proportionally to fit within the specified bounds

Parameters

int $width

The width to size within

int $height

The height to size within

Return Value

AssetContainer

AssetContainer FitMax(int $width, int $height)

Proportionally scale down this image if it is wider or taller than the specified dimensions.

Similar to Fit but without up-sampling. Use in templates with $FitMax.

Parameters

int $width

The maximum width of the output image

int $height

The maximum height of the output image

Return Value

AssetContainer

AssetContainer ScaleWidth(int $width)

Scale image proportionally by width. Use in templates with $ScaleWidth.

Parameters

int $width

The width to set

Return Value

AssetContainer

AssetContainer ScaleMaxWidth(int $width)

Proportionally scale down this image if it is wider than the specified width.

Similar to ScaleWidth but without up-sampling. Use in templates with $ScaleMaxWidth.

Parameters

int $width

The maximum width of the output image

Return Value

AssetContainer

AssetContainer ScaleHeight(int $height)

Scale image proportionally by height. Use in templates with $ScaleHeight.

Parameters

int $height

The height to set

Return Value

AssetContainer

AssetContainer ScaleMaxHeight(int $height)

Proportionally scale down this image if it is taller than the specified height.

Similar to ScaleHeight but without up-sampling. Use in templates with $ScaleMaxHeight.

Parameters

int $height

The maximum height of the output image

Return Value

AssetContainer

AssetContainer CropWidth(int $width)

Crop image on X axis if it exceeds specified width. Retain height.

Use in templates with $CropWidth. Example: $Image.ScaleHeight(100).$CropWidth(100)

Parameters

int $width

The maximum width of the output image

Return Value

AssetContainer

AssetContainer CropHeight(int $height)

Crop image on Y axis if it exceeds specified height. Retain width.

Use in templates with $CropHeight. Example: $Image.ScaleWidth(100).CropHeight(100)

Parameters

int $height

The maximum height of the output image

Return Value

AssetContainer

AssetContainer FillMax(int $width, int $height)

Crop this image to the aspect ratio defined by the specified width and height, then scale down the image to those dimensions if it exceeds them.

Similar to Fill but without up-sampling. Use in templates with $FillMax.

Parameters

int $width

The relative (used to determine aspect ratio) and maximum width of the output image

int $height

The relative (used to determine aspect ratio) and maximum height of the output image

Return Value

AssetContainer

AssetContainer Fill(int $width, int $height)

Resize and crop image to fill specified dimensions.

Use in templates with $Fill

Parameters

int $width

Width to crop to

int $height

Height to crop to

Return Value

AssetContainer

AssetContainer Quality(int $quality)

Set the quality of the resampled image

Parameters

int $quality

Quality level from 0 - 100

Return Value

AssetContainer

Exceptions

InvalidArgumentException

DBFile|DBHTMLText CMSThumbnail()

Default CMS thumbnail

Return Value

DBFile|DBHTMLText

Either a resized thumbnail, or html for a thumbnail icon

AssetContainer|DBHTMLText StripThumbnail()

Generates a thumbnail for use in the gridfield view

Return Value

AssetContainer|DBHTMLText

Either a resized thumbnail, or html for a thumbnail icon

AssetContainer|DBHTMLText PreviewThumbnail()

Get preview for this file

Return Value

AssetContainer|DBHTMLText

Either a resized thumbnail, or html for a thumbnail icon

AssetContainer Thumbnail(int $width, int $height)

Default thumbnail generation for Images

Parameters

int $width
int $height

Return Value

AssetContainer

AssetContainer|DBHTMLText ThumbnailIcon(int $width, int $height)

Thubnail generation for all file types.

Resizes images, but returns an icon <img /> tag if this is not a resizable image

Parameters

int $width
int $height

Return Value

AssetContainer|DBHTMLText

DBHTMLText IconTag()

Get HTML for img containing the icon for this file

Return Value

DBHTMLText

string ThumbnailURL(int $width, int $height)

Get URL to thumbnail of the given size.

May fallback to default icon

Parameters

int $width
int $height

Return Value

string

string getIcon()

Return the relative URL of an icon for the file type, based on the {@link appCategory()} value.

Images are searched for in "framework/images/app_icons/".

Return Value

string

URL to icon

Image_Backend getImageBackend()

Get Image_Backend instance for this image

Return Value

Image_Backend

$this setImageBackend(Image_Backend $backend)

Parameters

Image_Backend $backend

Return Value

$this

int getWidth()

Get the width of this image.

Return Value

int

int getHeight()

Get the height of this image.

Return Value

int

int getOrientation()

Get the orientation of this image.

Return Value

int

ORIENTATION_SQUARE | ORIENTATION_PORTRAIT | ORIENTATION_LANDSCAPE

bool isSize(int $width, int $height)

Determine if this image is of the specified size

Parameters

int $width

Width to check

int $height

Height to check

Return Value

bool

bool isWidth(int $width)

Determine if this image is of the specified width

Parameters

int $width

Width to check

Return Value

bool

bool isHeight(int $height)

Determine if this image is of the specified width

Parameters

int $height

Height to check

Return Value

bool

DBFile manipulateImage(string $variant, callable $callback)

Wrapper for manipulate that passes in and stores Image_Backend objects instead of tuples

Parameters

string $variant
callable $callback

Callback which takes an Image_Backend object, and returns an Image_Backend result. If this callback returns true then the current image will be duplicated without modification.

Return Value

DBFile

The manipulated file

DBFile manipulate(string $variant, callable $callback)

Generate a new DBFile instance using the given callback if it hasn't been created yet, or return the existing one if it has.

Parameters

string $variant

name of the variant to create

callable $callback

Callback which should return a new tuple as an array. This callback will be passed the backend, filename, hash, and variant This will not be called if the file does not need to be created.

Return Value

DBFile

The manipulated file

string variantName(string $format, $arg = null)

Name a variant based on a format with arbitrary parameters

Parameters

string $format

The format name.

$arg

Return Value

string

array|null variantParts($variantName)

Reverses {@link variantName()}.

The "format" part of a variant name is a method name on the owner of this trait. For legacy reasons, there's no delimiter between this part, and the encoded arguments. This means we have to use a whitelist of "known formats", based on methods available on the {@link Image} class as the "main" user of this trait. This class is commonly decorated with additional manipulation methods through {@link DataExtension}.

Parameters

$variantName

Return Value

array|null

An array of arguments passed to {@link variantName}. The first item is the "format".

Exceptions

InvalidArgumentException

bool IsLazyLoaded()

Determine whether the image should be lazy loaded

Return Value

bool

AssetContainer LazyLoad(mixed $lazyLoad)

Set the lazy loading state for this Image

Parameters

mixed $lazyLoad

Return Value

AssetContainer

static get_shortcodes()

static File|null find(string $filename)

Find a File object by the given filename.

Parameters

string $filename

Filename to search for, including any custom parent directories.

Return Value

File|null

Just an alias function to keep a consistent API with SiteTree

Return Value

string

The link to the file

deprecated 4.0

Just an alias function to keep a consistent API with SiteTree

Return Value

string

The absolute link to the file

string getTreeTitle()

Return Value

string

bool hasRestrictedAccess()

Check if the File has a CanViewType set or inherited at "LoggedInUsers or above"

This is a bit different from a canView() check in that it doesn't check anything against a member. Instead it is a member-less permission check

Return Value

bool

bool isTrackedFormUpload()

If the file was uploaded via a form and tracked in the database

Return Value

bool

string getStatusTitle()

Get title for current file status

Return Value

string

static string get_app_category(string $ext)

Returns a category based on the file extension.

This can be useful when grouping files by type, showing icons on filelinks, etc. Possible group values are: "audio", "mov", "zip", "image".

Parameters

string $ext

Extension to check

Return Value

string

static array get_category_extensions(array|string $categories)

For a category or list of categories, get the list of file extensions

Parameters

array|string $categories

List of categories, or single category

Return Value

array

string appCategory()

Returns a category based on the file extension.

Return Value

string

onAfterUpload()

Should be called after the file was uploaded

onAfterRevertToLive()

bool updateFilesystem()

This will check if the parent record and/or name do not match the name on the underlying DBFile record, and if so, copy this file to the new location, and update the record to point to this new file.

This method will update the File {see \SilverStripe\Assets\Storage\DBFile} field value on success, so it must be called before writing to the database

Return Value

bool

True if changed

true|null collateDescendants(string $condition, array $collator)

Collate selected descendants of this page.

$condition will be evaluated on each descendant, and if it is succeeds, that item will be added to the $collator array.

Parameters

string $condition

The PHP condition to be evaluated. The page will be called $item

array $collator

An array, passed by reference, to collect all of the matching descendants.

Return Value

true|null

string getSourceURL(bool $grant = true)

Get URL, but without resampling.

Parameters

bool $grant

Ensures that the url for any protected assets is granted for the current user.

Return Value

string

string generateFilename()

Get expected value of Filename tuple value. Will be used to trigger a file move on draft stage.

Return Value

string

string renameFile(string $newName)

Rename this file.

Note: This method will immediately save to the database to maintain filesystem consistency with the database.

Parameters

string $newName

Return Value

string

Updated Filename

string copyFile(string $newName)

Copy to new filename.

This will not automatically point to the new file (as renameFile() does)

Parameters

string $newName

Return Value

string

Updated filename

$this setFilename(string $filename)

Update the ParentID and Name for the given filename.

On save, the underlying DBFile record will move the underlying file to this location. Thus it will not update the underlying Filename value until this is done.

Parameters

string $filename

Return Value

$this

string getExtension()

Returns the file extension

Return Value

string

static string get_file_extension(string $filename)

Gets the extension of a filepath or filename, by stripping away everything before the last "dot".

Caution: Only returns the last extension in "double-barrelled" extensions (e.g. "gz" for "tar.gz").

Examples:

  • "myfile" returns ""
  • "myfile.txt" returns "txt"
  • "myfile.tar.gz" returns "gz"

Parameters

string $filename

Return Value

string

static string get_icon_for_extension(string $extension)

Given an extension, determine the icon that should be used

Parameters

string $extension

Return Value

string

Icon filename relative to base url

string getFileType()

Return the type of file for the given extension on the current file name.

Return Value

string

static string get_file_type(string $filename)

Get descriptive type of file based on filename

Parameters

string $filename

Return Value

string

Description of file

string|false getSize()

Returns the size of the file type in an appropriate format.

Return Value

string|false

String value, or false if doesn't exist

static string format_size(int $size)

Formats a file size (eg: (int)42 becomes string '42 bytes')

Parameters

int $size

Return Value

string

static int ini2bytes(string $iniValue) deprecated

deprecated 5.0 Use Convert::memstring2bytes() instead

Convert a php.ini value (eg: 512M) to bytes

Parameters

string $iniValue

Return Value

int

static string get_class_for_file_extension($ext)

Maps a {@link File} subclass to a specific extension.

By default, files with common image extensions will be created as {@link Image} instead of {@link File} when using {@link Folder::constructChild}, {@link Folder::addUploadToFolder}), and the {@link Upload} class (either directly or through {@link FileField}). For manually instanciated files please use this mapping getter.

Caution: Changes to mapping doesn't apply to existing file records in the database. Also doesn't hook into {@link Object::getCustomClass()}.

Parameters

$ext

Return Value

string

Classname for a subclass of {@link File}

static set_class_for_file_extension($exts, $class)

See {@link get_class_for_file_extension()}.

Parameters

$exts
$class

array setFromLocalFile(string $path, string $filename = null, string $hash = null, string $variant = null, array $config = [])

Assign a local file to the backend.

Parameters

string $path

Absolute filesystem path to file

string $filename

Optional path to ask the backend to name as. Will default to the filename of the $path, excluding directories.

string $hash

Hash of original file, if storing a variant.

string $variant

Name of variant, if storing a variant.

array $config

Write options. {see \SilverStripe\Assets\Storage\AssetStore}

Return Value

array

Tuple associative array (Filename, Hash, Variant) Unless storing a variant, the hash will be calculated from the local file content.

array setFromStream(resource $stream, string $filename, string $hash = null, string $variant = null, array $config = [])

Assign a stream to the backend

Parameters

resource $stream

Streamable resource

string $filename

Name for the resulting file

string $hash

Hash of original file, if storing a variant.

string $variant

Name of variant, if storing a variant.

array $config

Write options. {see \SilverStripe\Assets\Storage\AssetStore}

Return Value

array

Tuple associative array (Filename, Hash, Variant) Unless storing a variant, the hash will be calculated from the raw stream.

array setFromString(string $data, string $filename, string $hash = null, string $variant = null, array $config = [])

Assign a set of data to the backend

Parameters

string $data

Raw binary/text content

string $filename

Name for the resulting file

string $hash

Hash of original file, if storing a variant.

string $variant

Name of variant, if storing a variant.

array $config

Write options. {see \SilverStripe\Assets\Storage\AssetStore}

Return Value

array

Tuple associative array (Filename, Hash, Variant) Unless storing a variant, the hash will be calculated from the given data.

string forTemplate()

Return a html5 tag of the appropriate for this file (normally img or a)

Return Value

string

string getTag()

Return a html5 tag of the appropriate for this file (normally img or a)

Return Value

string

BackLinkTracking()

Get the back-link tracking objects that link to this file via HTML fields

int BackLinkTrackingCount()

Count of backlinks Note: Doesn't filter broken records

Return Value

int

static string join_paths($part = null)

Joins one or more segments together to build a Filename identifier.

Note that the result will not have a leading slash, and should not be used with local file paths.

Parameters

$part

Return Value

string

bool deleteFile()

Delete a file (and all variants).

{see \SilverStripe\Assets\Storage\AssetStore::delete()}

Return Value

bool

Flag if a file was deleted

string getVisibility()

Determine visibility of the given file

Return Value

string

one of values defined by the constants VISIBILITY_PROTECTED or VISIBILITY_PUBLIC, or null if the file does not exist

publishFile()

Publicly expose the file (and all variants) identified by the given filename and hash {see AssetStore::publish}

protectFile()

Protect a file (and all variants) from public access, identified by the given filename and hash.

{see \SilverStripe\Assets\Storage\AssetStore::protect()}

grantFile()

Ensures that access to the specified protected file is granted for the current user.

If this file is currently in protected mode, the asset store will ensure the returned asset for the duration of the current session / user. This will have no effect if the file is in published mode. This will not grant access to users other than the owner of the current session. Does not require a member to be logged in.

revokeFile()

Revoke access to the given file for the current user.

Note: This will have no effect if the given file is public

bool canViewFile()

Check if the current user can view the given file.

Return Value

bool

True if the file is verified and grants access to the current session / user.

Return Value

string

Link to the CMS-author view. Should point to a controller subclassing {@link LeftAndMain}. Example: http://mysite.com/admin/edit/6

Parameters

string $action

Return Value

string

Link to the end-user view for this record. Example: http://mysite.com/my-record

PermissionChecker getPermissionChecker()

Return Value

PermissionChecker

providePermissions()

Return a map of permission codes to add to the dropdown shown in the Security section of the CMS.

array( 'VIEW_SITE' => 'View the site', );

static array getAllowedExtensions()

Get the list of globally allowed file extensions for file uploads.

Specific extensions can be disabled with configuration, for example:

SilverStripe\Assets\File:
  allowed_extensions:
    dmg: false
    docx: false

Return Value

array

File Parent()

Returns parent File

Return Value

File

Member Owner()

Returns Member object of file owner.

Return Value

Member

List of SiteTreeLink objects attached to this page

Return Value

FileLink[]

static bool getLazyLoadingEnabled()

Return Value

bool