class DataObject extends ViewableData implements DataObjectInterface, i18nEntityProvider, Resettable

A single database record & abstract class for the data-access-model.

Extensions

See {@link Extension} and {@link DataExtension}.

Permission Control

Object-level access control by {@link Permission}. Permission codes are arbitrary strings which can be selected on a group-by-group basis.

class Article extends DataObject implements PermissionProvider { static $api_access = true;

function canView($member = false) { return Permission::check('ARTICLE_VIEW'); } function canEdit($member = false) { return Permission::check('ARTICLE_EDIT'); } function canDelete() { return Permission::check('ARTICLE_DELETE'); } function canCreate() { return Permission::check('ARTICLE_CREATE'); } function providePermissions() { return array( 'ARTICLE_VIEW' => 'Read an article object', 'ARTICLE_EDIT' => 'Edit an article object', 'ARTICLE_DELETE' => 'Delete an article object', 'ARTICLE_CREATE' => 'Create an article object', ); } }

Object-level access control by {@link Group} membership: class Article extends DataObject { static $api_access = true;

function canView($member = false) { if(!$member) $member = Security::getCurrentUser(); return $member->inGroup('Subscribers'); } function canEdit($member = false) { if(!$member) $member = Security::getCurrentUser(); return $member->inGroup('Editors'); }

// ... }

If any public method on this class is prefixed with an underscore, the results are cached in memory through {@link cachedCall()}.

Traits

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

Config options

singular_name string Human-readable singular name.
plural_name string Human-readable plural name
api_access Allow API access to this object?
default_classname string Allows specification of a default value for the ClassName field.
validation_enabled boolean Should dataobjects be validated before they are written?
fixed_fields array Base fields which are not defined in static $db
cascade_deletes array 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.
db array Database field definitions.
create_table_options array Specify custom options for a CREATE TABLE call.
indexes array If a field is in this array, then create a database index on that field. This is a map from fieldname to index type.
defaults array Inserts standard column-values when a DataObject is instantiated. Does not insert default records {see $default_records}.
default_records array Multidimensional array which inserts default data into the database on a db/build-call as long as the database-table is empty. Please use this only for simple constructs, not for SiteTree-Objects etc. which need special behaviour such as publishing and ParentNodes.
has_one array One-to-zero relationship defintion. This is a map of component name to data type. In order to turn this into a true one-to-one relationship you can add a {@link DataObject::$belongs_to} relationship on the child class.
belongs_to array A meta-relationship that allows you to define the reverse side of a {@link DataObject::$has_one}.
has_many array This defines a one-to-many relationship. It is a map of component name to the remote data class.
many_many array many-many relationship definitions.
many_many_extraFields array Extra fields to include on the connecting many-many table.
belongs_many_many array The inverse side of a many-many relationship.
default_sort string The default sort expression. This will be inserted in the ORDER BY clause of a SQL query if no other sort expression is provided.
searchable_fields array Default list of fields that can be scaffolded by the ModelAdmin search interface.
field_labels array User defined labels for searchable_fields, used to override default display in the search form.
summary_fields array Provides a default list of fields to be used by a 'summary' view of this object.

Properties

bool $destroyed
int $ID ID of the DataObject, 0 if the DataObject doesn't exist in database.
int $OldID ID of object, if deleted
string $Title
string $ClassName Class name of the DataObject
string $LastEdited Date and time of DataObject's last modification.
string $Created Date and time of DataObject creation.
string $ObsoleteClassName If ClassName no longer exists this will be set to the legacy value

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, boolean $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|null $record = null, boolean $isSingleton = false, array $queryParams = array())

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()

Returns true if this object "exists", i.e., has a sensible value.

string
__toString()

No description

getCustomisedObj()

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.

boolean
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.

Boolean
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()

Validate the current object.

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(boolean $showDebug = false, boolean $forceInsert = false, boolean $forceWrite = false, boolean $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)

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()

Centerpiece of every data administration interface in Silverstripe, which returns a {@link FieldList} suitable for a {@link Form} object.

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.

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

Return the fields that have changed since the last write.

boolean
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.

boolean
hasDatabaseField(string $field)

Returns true if the given field exists as a database column

boolean
can(string $perm, Member $member = null, array $context = array())

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

boolean|null
extendedCan(string $methodName, Member|int $member, array $context = array())

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

boolean
canView(Member $member = null)

No description

boolean
canEdit(Member $member = null)

No description

boolean
canDelete(Member $member = null)

No description

boolean
canCreate(Member $member = null, array $context = array())

No description

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 = "", boolean $cache = true, string $orderby = "")

Return the first item matching the given query.

flushCache(boolean $persistent = true)

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

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, boolean $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().

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(boolean $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.

boolean
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.

Details

in CustomMethods at line 47
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

in CustomMethods at line 146
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

in CustomMethods at line 176
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

in Extensible at line 172
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

in Extensible at line 236
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

in Extensible at line 278
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.

in Extensible at line 312
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

in Extensible at line 373
static bool has_extension(string $classOrExtension, string $requiredExtension = null, boolean $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.
boolean $strict if the extension has to match the required extension and not be a subclass

Return Value

bool Flag if the extension exists

in Extensible at line 415
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

in Extensible at line 450
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

in Extensible at line 497
Extension|null getExtensionInstance(string $extension)

Get an extension instance attached to this object by name.

Parameters

string $extension

Return Value

Extension|null

in Extensible at line 526
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

in Extensible at line 540
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.

in Injectable at line 26
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

in Injectable at line 43
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

in Configurable at line 20
static Config_ForClass config()

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

....).

Return Value

Config_ForClass

in Configurable at line 32
mixed stat(string $name) deprecated

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

Get inherited config value

Parameters

string $name

Return Value

mixed

in Configurable at line 44
mixed uninherited(string $name)

Gets the uninherited value for the given config option

Parameters

string $name

Return Value

mixed

in Configurable at line 57
$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

at line 327
__construct(array|null $record = null, boolean $isSingleton = false, array $queryParams = array())

Construct a new DataObject.

Parameters

array|null $record Used internally for rehydrating an object from database content. Bypasses setters on this class, and hence should not be used for populating data on new records.
boolean $isSingleton This this to true if this is a singleton() object, a stub for calling methods. Singletons don't have their defaults set.
array $queryParams List of DataQuery params necessary to lazy load, or load related objects.

in ViewableData at line 106
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

in ViewableData at line 129
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

in ViewableData at line 152
__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

in ViewableData at line 167
setFailover(ViewableData $failover)

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

Parameters

ViewableData $failover

in ViewableData at line 183
ViewableData|null getFailover()

Get the current failover object if set

Return Value

ViewableData|null

at line 2776
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

at line 2419
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

at line 2637
$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

at line 721
defineMethods()

Adds methods from the extensions.

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

in ViewableData at line 258
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

at line 759
bool exists()

Returns true if this object "exists", i.e., has a sensible value.

The default behaviour for a DataObject is to return true if the object exists in the database, you can override this in subclasses.

Return Value

bool

in ViewableData at line 289
string __toString()

Return Value

string the class name

in ViewableData at line 297
ViewableData getCustomisedObj()

Return Value

ViewableData

in ViewableData at line 305
setCustomisedObj(ViewableData $object)

Parameters

ViewableData $object

at line 2747
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

in ViewableData at line 352
string castingClass(string $field)

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

Parameters

string $field

Return Value

string

in ViewableData at line 365
string escapeTypeForField(string $field)

Return the string-format type for the given field.

Parameters

string $field

Return Value

string 'xml'|'raw'

in ViewableData at line 389
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

in ViewableData at line 471
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

in ViewableData at line 516
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

at line 4009
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

in ViewableData at line 545
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

in ViewableData at line 558
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

in ViewableData at line 579
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

at line 2407
array getViewerTemplates(string $suffix = '')

Find appropriate templates for SSViewer to use to render this object

Parameters

string $suffix

Return Value

array

in ViewableData at line 603
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

in ViewableData at line 620
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

in ViewableData at line 647
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

in ViewableData at line 676
ViewableData_Debugger Debug()

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

Return Value

ViewableData_Debugger

at line 312
static DataObjectSchema getSchema()

Get schema object

Return Value

DataObjectSchema

at line 408
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.

at line 425
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.

at line 635
string getObsoleteClassName()

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

Return Value

string

at line 649
string getClassName()

Gets name of this class

Return Value

string

at line 668
$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

at line 696
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.

at line 770
boolean isEmpty()

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

Return Value

boolean

at line 798
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

at line 815
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

at line 839
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

at line 851
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

at line 874
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

at line 896
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

at line 915
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

at line 925
array toMap()

Convert this object to a map.

Return Value

array The data as a map.

at line 939
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.

at line 959
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

at line 1020
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

at line 1049
Boolean 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

Boolean

at line 1130
$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

at line 1162
ValidationResult validate()

Validate the current object.

By default, there is no validation - objects are always valid! However, you can overload this method in your DataObject sub-classes to specify custom validation, or use the hook through DataExtension.

Invalid objects won't be able to be written - a warning will be thrown and no write will occur. onBeforeWrite() and onAfterWrite() won't get called either.

It is expected that you call validate() in your own application to test that an object is valid before attempting a write, and respond appropriately if it isn't.

Return Value

ValidationResult

See also

{@link ValidationResult}

at line 1174
ValidationResult doValidate()

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

Return Value

ValidationResult

at line 1222
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

at line 1262
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

at line 1519
write(boolean $showDebug = false, boolean $forceInsert = false, boolean $forceWrite = false, boolean $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

boolean $showDebug Show debugging information
boolean $forceInsert Run INSERT command rather than UPDATE, even if record already exists
boolean $forceWrite Write to database even if there are no changes
boolean $writeComponents Call write() on all associated component instances which were previously retrieved through {@link getComponent()}, {@link getComponents()} or {@link getManyManyComponents()} (Default: false)

Exceptions

ValidationException Exception that can be caught and handled by the calling function

at line 1578
writeRelations()

Writes cached relation lists to the database, if possible

at line 1600
DataObject writeComponents(bool $recursive = false)

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

Return Value

DataObject $this

at line 1619
delete()

Delete this data object.

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

at line 1663
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

at line 1681
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

at line 1695
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

at line 1775
$this setComponent(string $componentName, DataObject|null $item)

Assign an item to the given component

Parameters

string $componentName
DataObject|null $item

Return Value

$this

at line 1821
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.

at line 1867
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.

at line 1904
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

at line 1934
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

at line 2038
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

at line 2107
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.

at line 2120
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

at line 2138
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

at line 2156
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

at line 2169
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()

at line 2186
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

at line 2202
SearchContext getDefaultSearchContext()

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

Return Value

SearchContext

at line 2226
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

at line 2301
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

at line 2360
FieldList getCMSFields()

Centerpiece of every data administration interface in Silverstripe, which returns a {@link FieldList} suitable for a {@link Form} object.

If not overloaded, we're using {@link scaffoldFormFields()} to automatically generate this set. To customize, overload this method in a subclass or extended onto it by using {@link DataExtension->updateCMSFields()}.

class MyCustomClass extends DataObject { static $db = array('CustomProperty'=>'Boolean');

function getCMSFields() { $fields = parent::getCMSFields(); $fields->addFieldToTab('Root.Content',new CheckboxField('CustomProperty')); return $fields; } }

Return Value

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

See also

Good example of complex FormField building: SiteTree::getCMSFields()

at line 2380
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

at line 2399
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.

at line 2550
array getChangedFields(boolean|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

boolean|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

at line 2618
boolean 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

boolean

at line 2729
$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

at line 2795
boolean hasDatabaseField(string $field)

Returns true if the given field exists as a database column

Parameters

string $field Name of the field

Return Value

boolean

at line 2812
boolean can(string $perm, Member $member = null, array $context = array())

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

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

at line 2856
boolean|null extendedCan(string $methodName, Member|int $member, array $context = array())

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

boolean|null

at line 2877
boolean canView(Member $member = null)

Parameters

Member $member

Return Value

boolean

at line 2890
boolean canEdit(Member $member = null)

Parameters

Member $member

Return Value

boolean

at line 2903
boolean canDelete(Member $member = null)

Parameters

Member $member

Return Value

boolean

at line 2918
boolean canCreate(Member $member = null, array $context = array())

Parameters

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

Return Value

boolean

at line 2932
string debug()

Debugging used by Debug::show()

Return Value

string HTML data representing this object

at line 2955
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

at line 3003
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

at line 3041
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

at line 3068
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

at line 3109
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

at line 3172
static DataObject|null get_one(string $callerClass, string|array $filter = "", boolean $cache = true, string $orderby = "")

Return the first item matching the given query.

All calls to get_one() are cached.

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.
boolean $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

at line 3207
DataObject flushCache(boolean $persistent = true)

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

Parameters

boolean $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

at line 3230
static flush_and_destroy_cache()

Flush the get_one global cache and destroy associated objects.

at line 3249
static reset()

Reset all global caches associated with DataObject.

at line 3271
static DataObject get_by_id(string|int $classOrID, int|bool $idOrCache = null, boolean $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)

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
boolean $cache See {@link get_one()}

Return Value

DataObject The element

at line 3293
string baseTable()

Get the name of the base table for this object

Return Value

string

at line 3303
string baseClass()

Get the base class for this object

Return Value

string

at line 3319
array getSourceQueryParams()

Return Value

array

See also

$sourceQueryParams

at line 3329
array getInheritableQueryParams()

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

Return Value

array

at line 3340
setSourceQueryParams(array $array)

Parameters

array $array

See also

$sourceQueryParams

at line 3350
setSourceQueryParam(string $key, string $value)

Parameters

string $key
string $value

See also

$sourceQueryParams

at line 3360
string getSourceQueryParam(string $key)

Parameters

string $key

Return Value

string

See also

$sourceQueryParams

at line 3375
requireTable()

Check the database schema and update it as necessary.

at line 3457
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().

at line 3484
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

at line 3584
array fieldLabels(boolean $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

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

Return Value

array Array of all element labels

at line 3650
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

at line 3663
array summaryFields()

Get the default summary fields for this object.

Return Value

array

at line 3722
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

at line 3743
boolean isInDB()

Return Value

boolean True if the object is in the database

at line 3756
static disable_subclass_access()

Temporarily disable subclass access in data object qeur

at line 3761
static enable_subclass_access()

at line 3983
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) { $entities["MyTestClass.my_static_array_{$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.

at line 4025
DataObject getJoin()

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

Return Value

DataObject

at line 4037
$this setJoin(DataObject $object, string $alias = null)

Set joining object

Parameters

DataObject $object
string $alias Alias

Return Value

$this

at line 4060
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

at line 4109
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