Classes, traits, and interfaces - 10.3.x - drupal

Introduction to classes

A lot of the PHP code in Drupal is object oriented (OO), making use of PHP classes, interfaces, and traits. See the Objected-oriented programming conventions for more information.

See also

Objected-oriented programming conventions

File

core/core.api.php, line 1518

Name	Deprecated	Object type	Namespace	File name	Summary	Direct uses	Use statements	Strings
Extract		class	Drupal\migrate\Plugin\migrate\process	core/modules/migrate/src/Plugin/migrate/process/Extract.php	Extracts a value from an array.		1
ExtractTest		class	Drupal\Tests\migrate\Unit\process	core/modules/migrate/tests/src/Unit/process/ExtractTest.php	@coversDefaultClass \Drupal\migrate\Plugin\migrate\process\Extract[[api-linebreak]] @group migrate
ExtractTest		class	Drupal\Tests\migrate\Kernel\process	core/modules/migrate/tests/src/Kernel/process/ExtractTest.php	Tests the extract process plugin.
ExtraFieldBlock		class	Drupal\layout_builder\Plugin\Block	core/modules/layout_builder/src/Plugin/Block/ExtraFieldBlock.php	Provides a block that renders an extra field from an entity.		1
ExtraFieldBlockCacheTagInvalidator		class	Drupal\layout_builder\Cache	core/modules/layout_builder/src/Cache/ExtraFieldBlockCacheTagInvalidator.php	Provides a cache tag invalidator that clears the block cache.			2
ExtraFieldBlockDeriver		class	Drupal\layout_builder\Plugin\Derivative	core/modules/layout_builder/src/Plugin/Derivative/ExtraFieldBlockDeriver.php	Provides entity field block definitions for every field.		1
FactoryInterface		interface	Drupal\Component\Plugin\Factory	core/lib/Drupal/Component/Plugin/Factory/FactoryInterface.php	Factory interface implemented by all plugin factories.	2	3
FactoryTest		class	Drupal\KernelTests\Core\Plugin	core/tests/Drupal/KernelTests/Core/Plugin/FactoryTest.php	Tests that plugins are correctly instantiated.
Failing		class	Drupal\image_test\Plugin\ImageToolkit\Operation\test	core/modules/system/tests/modules/image_test/src/Plugin/ImageToolkit/Operation/test/Failing.php	An image toolkit operation that throws a \RuntimeException.
FakeAutoloader		class	Drupal\Tests\Core\DrupalKernel	core/tests/Drupal/Tests/Core/DrupalKernel/DrupalKernelTest.php	A fake autoloader for testing.
FakeLogEntries		trait	Drupal\Tests\dblog\Functional	core/modules/dblog/tests/src/Functional/FakeLogEntries.php	Provides methods to generate log entries.		1
FakeRecord		class	Drupal\Tests\system\Functional\Database	core/modules/system/tests/src/Functional/Database/FakeRecord.php	Fetches into a class.		2
FakeViewModeContext		class	Drupal\layout_builder_fieldblock_test\ContextProvider	core/modules/layout_builder/tests/modules/layout_builder_fieldblock_test/src/ContextProvider/FakeViewModeContext.php	Provides a global context for view_mode for testing purposes.			2
FallbackFieldTypeCategory		class	Drupal\Core\Field	core/lib/Drupal/Core/Field/FallbackFieldTypeCategory.php	Fallback plugin class for FieldTypeCategoryManager.		1	1
FallbackPluginManagerInterface		interface	Drupal\Component\Plugin	core/lib/Drupal/Component/Plugin/FallbackPluginManagerInterface.php	An interface implemented by plugin managers with fallback plugin behaviors.	6	8
FalseContentResponse		class	Drupal\Tests\Core\StackMiddleware	core/tests/Drupal/Tests/Core/StackMiddleware/ContentLengthTest.php	Response that returns FALSE from ::getContent().
Fast404ExceptionHtmlSubscriber		class	Drupal\Core\EventSubscriber	core/lib/Drupal/Core/EventSubscriber/Fast404ExceptionHtmlSubscriber.php	High-performance 404 exception subscriber.			2
Fast404Test		class	Drupal\FunctionalTests\EventSubscriber	core/tests/Drupal/FunctionalTests/EventSubscriber/Fast404Test.php	Tests the fast 404 functionality.
FastTest		class	Drupal\Tests\system\Functional\Theme	core/modules/system/tests/src/Functional/Theme/FastTest.php	Tests autocompletion not loading registry.
FavoriteAnimalTestForm		class	Drupal\block_test\Form	core/modules/block/tests/modules/block_test/src/Form/FavoriteAnimalTestForm.php	Form that performs favorite animal test.
Feed		class	Drupal\views\Plugin\views\display	core/modules/views/src/Plugin/views/display/Feed.php	The plugin that handles a feed, such as RSS or atom.
FetchModeTrait		trait	Drupal\Core\Database	core/lib/Drupal/Core/Database/FetchModeTrait.php	Provide helper methods for statement fetching.
FetchTest		class	Drupal\KernelTests\Core\Database	core/tests/Drupal/KernelTests/Core/Database/FetchTest.php	Tests the Database system's various fetch capabilities.
FiberPlaceholderTest		class	Drupal\Tests\big_pipe\Unit\Render	core/modules/big_pipe/tests/src/Unit/Render/FiberPlaceholderTest.php	@coversDefaultClass \Drupal\big_pipe\Render\BigPipe[[api-linebreak]] @group big_pipe
Fid		class	Drupal\file\Plugin\views\argument	core/modules/file/src/Plugin/views/argument/Fid.php	Argument handler to accept multiple file ids.
Field		class	Drupal\field\Plugin\migrate\source\d6	core/modules/field/src/Plugin/migrate/source/d6/Field.php	Drupal 6 field source from database.	1
Field		class	Drupal\field\Plugin\migrate\source\d7	core/modules/field/src/Plugin/migrate/source/d7/Field.php	Drupal 7 field source from database.	1
FieldableEntity		abstract class	Drupal\migrate_drupal\Plugin\migrate\source\d7	core/modules/migrate_drupal/src/Plugin/migrate/source/d7/FieldableEntity.php	Base class for D7 source plugins which need to collect field values.	8	8
FieldableEntityDefinitionUpdateTest		class	Drupal\KernelTests\Core\Entity	core/tests/Drupal/KernelTests/Core/Entity/FieldableEntityDefinitionUpdateTest.php	Tests EntityDefinitionUpdateManager's fieldable entity update functionality.
FieldableEntityInterface		interface	Drupal\Core\Entity	core/lib/Drupal/Core/Entity/FieldableEntityInterface.php	Interface for entities having fields.	1	90
FieldableEntityNormalizerTrait		trait	Drupal\serialization\Normalizer	core/modules/serialization/src/Normalizer/FieldableEntityNormalizerTrait.php	A trait for providing fieldable entity normalization/denormalization methods.
FieldableEntityStorageInterface		interface	Drupal\Core\Entity	core/lib/Drupal/Core/Entity/FieldableEntityStorageInterface.php	A storage that supports entity types with field definitions.	1	3
FieldAccessTest		class	Drupal\KernelTests\Core\Field	core/tests/Drupal/KernelTests/Core/Field/FieldAccessTest.php	Tests Field level access hooks.
FieldAccessTest		class	Drupal\Tests\field\Functional	core/modules/field/tests/src/Functional/FieldAccessTest.php	Tests Field access.
FieldApiDataTest		class	Drupal\Tests\views\Kernel	core/modules/views/tests/src/Kernel/FieldApiDataTest.php	Tests the Field Views data.
FieldAPIHandlerTrait		trait	Drupal\views	core/modules/views/src/FieldAPIHandlerTrait.php	A trait containing helper methods for field definitions.		7
FieldAttachOtherTest		class	Drupal\Tests\field\Kernel	core/modules/field/tests/src/Kernel/FieldAttachOtherTest.php	Tests other Field API functions.
FieldAttachStorageTest		class	Drupal\Tests\field\Kernel	core/modules/field/tests/src/Kernel/FieldAttachStorageTest.php	Tests storage-related Field Attach API functions.
FieldBlock		class	Drupal\layout_builder\Plugin\Block	core/modules/layout_builder/src/Plugin/Block/FieldBlock.php	Provides a block that renders a field from an entity.	1	2
FieldBlock		class	Drupal\layout_builder_fieldblock_test\Plugin\Block	core/modules/layout_builder/tests/modules/layout_builder_fieldblock_test/src/Plugin/Block/FieldBlock.php	Provides test field block to test with Block UI.
FieldBlockDeriver		class	Drupal\layout_builder\Plugin\Derivative	core/modules/layout_builder/src/Plugin/Derivative/FieldBlockDeriver.php	Provides entity field block definitions for every field.		2
FieldBlockDeriverTest		class	Drupal\Tests\layout_builder\Kernel	core/modules/layout_builder/tests/src/Kernel/FieldBlockDeriverTest.php	Tests field block plugin derivatives.
FieldBlockTest		class	Drupal\Tests\layout_builder\FunctionalJavascript	core/modules/layout_builder/tests/src/FunctionalJavascript/FieldBlockTest.php	@coversDefaultClass \Drupal\layout_builder\Plugin\Block\FieldBlock[[api-linebreak]]
FieldBlockTest		class	Drupal\Tests\layout_builder\Kernel	core/modules/layout_builder/tests/src/Kernel/FieldBlockTest.php	@coversDefaultClass \Drupal\layout_builder\Plugin\Block\FieldBlock[[api-linebreak]] @group Field
FieldBooleanTest		class	Drupal\Tests\views\Kernel\Handler	core/modules/views/tests/src/Kernel/Handler/FieldBooleanTest.php	Tests the core Drupal\views\Plugin\views\field\Boolean handler.
FieldBundle		class	Drupal\field\Plugin\migrate\process\d7	core/modules/field/src/Plugin/migrate/process/d7/FieldBundle.php	Determines the bundle for a field.
FieldConfig		class	Drupal\field\Entity	core/modules/field/src/Entity/FieldConfig.php	Defines the Field entity.		323
FieldConfigAccessControlHandler		class	Drupal\field	core/modules/field/src/FieldConfigAccessControlHandler.php	Defines the access control handler for the field config entity type.		1
FieldConfigAccessControlHandlerTest		class	Drupal\Tests\field\Unit	core/modules/field/tests/src/Unit/FieldConfigAccessControlHandlerTest.php	Tests the field config access controller.
FieldConfigAddController		final class	Drupal\field_ui\Controller	core/modules/field_ui/src/Controller/FieldConfigAddController.php	Controller for building the field instance form.		1

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