Classes, traits, and interfaces - 8.9.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 1511

Name	Deprecated	Object type	Namespace	File name	Summary	Direct uses	Use statements	Strings
ExtractTest		class	Drupal\Tests\migrate\Unit\process	core/modules/migrate/tests/src/Unit/process/ExtractTest.php	@coversDefaultClass \Drupal\migrate\Plugin\migrate\process\Extract @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
ExtraFieldBlockDeriver		class	Drupal\layout_builder\Plugin\Derivative	core/modules/layout_builder/src/Plugin/Derivative/ExtraFieldBlockDeriver.php	Provides entity field block definitions for every field.
ExtraFieldUpdatePathTest		class	Drupal\Tests\layout_builder\Functional\Update	core/modules/layout_builder/tests/src/Functional/Update/ExtraFieldUpdatePathTest.php	Tests the upgrade path for Layout Builder extra fields.
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.
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
FakePhpassHashedPassword		class	Drupal\Tests\Core\Password	core/tests/Drupal/Tests/Core/Password/PasswordHashingTest.php	A fake class for tests.
FakeRecord	in drupal:8.4.0 and is removed from drupal:9.0.0. Instead use \Drupal\Tests\system\Functional\Database\FakeRecord.	class	Drupal\system\Tests\Database	core/modules/system/src/Tests/Database/FakeRecord.php	Fetches into a class.
FakeRecord		class	Drupal\Tests\system\Functional\Database	core/modules/system/tests/src/Functional/Database/FakeRecord.php	Fetches into a class.		1
FakeTemplateWrapper		class	Drupal\Tests\help_topics\Unit	core/modules/help_topics/tests/src/Unit/HelpTopicTwigTest.php	Defines a fake template class to mock \Twig_TemplateWrapper.
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
FallbackPluginManagerInterface		interface	Drupal\Component\Plugin	core/lib/Drupal/Component/Plugin/FallbackPluginManagerInterface.php	An interface implemented by plugin managers with fallback plugin behaviors.	5	5
Fast404ExceptionHtmlSubscriber		class	Drupal\Core\EventSubscriber	core/lib/Drupal/Core/EventSubscriber/Fast404ExceptionHtmlSubscriber.php	High-performance 404 exception subscriber.			2
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\aggregator\Entity	core/modules/aggregator/src/Entity/Feed.php	Defines the aggregator feed entity class.		20
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.
FeedAccessControlHandler		class	Drupal\aggregator	core/modules/aggregator/src/FeedAccessControlHandler.php	Defines an access control handler for the feed entity.
FeedAdminDisplayTest		class	Drupal\Tests\aggregator\Functional	core/modules/aggregator/tests/src/Functional/FeedAdminDisplayTest.php	Tests the display of a feed on the Aggregator list page.
FeedCacheTagsTest		class	Drupal\Tests\aggregator\Functional	core/modules/aggregator/tests/src/Functional/FeedCacheTagsTest.php	Tests the Feed entity's cache tags.
FeedDeleteForm		class	Drupal\aggregator\Form	core/modules/aggregator/src/Form/FeedDeleteForm.php	Provides a form for deleting a feed.
FeedFetcherPluginTest		class	Drupal\Tests\aggregator\Functional	core/modules/aggregator/tests/src/Functional/FeedFetcherPluginTest.php	Tests the fetcher plugins functionality and discoverability.
FeedForm		class	Drupal\aggregator	core/modules/aggregator/src/FeedForm.php	Form handler for the aggregator feed edit forms.
FeedHalJsonAnonTest		class	Drupal\Tests\aggregator\Functional\Hal	core/modules/aggregator/tests/src/Functional/Hal/FeedHalJsonAnonTest.php	@group hal
FeedHalJsonBasicAuthTest		class	Drupal\Tests\aggregator\Functional\Hal	core/modules/aggregator/tests/src/Functional/Hal/FeedHalJsonBasicAuthTest.php	@group hal
FeedHalJsonCookieTest		class	Drupal\Tests\aggregator\Functional\Hal	core/modules/aggregator/tests/src/Functional/Hal/FeedHalJsonCookieTest.php	@group hal
FeedHalJsonTestBase		abstract class	Drupal\Tests\aggregator\Functional\Hal	core/modules/aggregator/tests/src/Functional/Hal/FeedHalJsonTestBase.php		4	1
FeedHalJsonTestBase	in drupal:8.6.0 and is removed from drupal:9.0.0. Use Drupal\Tests\aggregator\Functional\Hal\FeedHalJsonTestBase instead.	abstract class	Drupal\Tests\hal\Functional\EntityResource\Feed	core/modules/hal/tests/src/Functional/EntityResource/Feed/FeedHalJsonTestBase.php
FeedHtmlRouteProvider		class	Drupal\aggregator	core/modules/aggregator/src/FeedHtmlRouteProvider.php	Provides HTML routes for the feed entity type.
FeedInterface		interface	Drupal\aggregator	core/modules/aggregator/src/FeedInterface.php	Provides an interface defining an aggregator feed entity.	1	14
FeedItemsDeleteForm		class	Drupal\aggregator\Form	core/modules/aggregator/src/Form/FeedItemsDeleteForm.php	Provides a deletion confirmation form for items that belong to a feed.
FeedJsonAnonTest		class	Drupal\Tests\aggregator\Functional\Rest	core/modules/aggregator/tests/src/Functional/Rest/FeedJsonAnonTest.php	@group rest
FeedJsonBasicAuthTest		class	Drupal\Tests\aggregator\Functional\Rest	core/modules/aggregator/tests/src/Functional/Rest/FeedJsonBasicAuthTest.php	@group rest
FeedJsonCookieTest		class	Drupal\Tests\aggregator\Functional\Rest	core/modules/aggregator/tests/src/Functional/Rest/FeedJsonCookieTest.php	@group rest
FeedLanguageTest		class	Drupal\Tests\aggregator\Functional	core/modules/aggregator/tests/src/Functional/FeedLanguageTest.php	Tests aggregator feeds in multiple languages.
FeedParserTest		class	Drupal\Tests\aggregator\Functional	core/modules/aggregator/tests/src/Functional/FeedParserTest.php	Tests the built-in feed parser with valid feed samples.
FeedProcessorPluginTest		class	Drupal\Tests\aggregator\Functional	core/modules/aggregator/tests/src/Functional/FeedProcessorPluginTest.php	Tests the processor plugins functionality and discoverability.
FeedResourceTestBase		abstract class	Drupal\Tests\aggregator\Functional\Rest	core/modules/aggregator/tests/src/Functional/Rest/FeedResourceTestBase.php		8	2
FeedResourceTestBase	in drupal:8.6.0 and is removed from drupal:9.0.0. Use Drupal\Tests\aggregator\Functional\Rest\FeedResourceTestBase instead.	abstract class	Drupal\Tests\rest\Functional\EntityResource\Feed	core/modules/rest/tests/src/Functional/EntityResource/Feed/FeedResourceTestBase.php
FeedStorage		class	Drupal\aggregator	core/modules/aggregator/src/FeedStorage.php	Controller class for aggregator's feeds.
FeedStorageInterface		interface	Drupal\aggregator	core/modules/aggregator/src/FeedStorageInterface.php	Defines an interface for aggregator feed entity storage classes.	1	5
FeedStorageSchema		class	Drupal\aggregator	core/modules/aggregator/src/FeedStorageSchema.php	Defines the feed schema handler.
FeedTest		class	Drupal\Tests\jsonapi\Functional	core/modules/jsonapi/tests/src/Functional/FeedTest.php	JSON:API integration test for the "Feed" content entity type.
FeedTitleConstraint		class	Drupal\aggregator\Plugin\Validation\Constraint	core/modules/aggregator/src/Plugin/Validation/Constraint/FeedTitleConstraint.php	Supports validating feed titles.
FeedUrlConstraint		class	Drupal\aggregator\Plugin\Validation\Constraint	core/modules/aggregator/src/Plugin/Validation/Constraint/FeedUrlConstraint.php	Supports validating feed URLs.
FeedValidationTest		class	Drupal\Tests\aggregator\Kernel	core/modules/aggregator/tests/src/Kernel/FeedValidationTest.php	Tests feed validation constraints.
FeedViewBuilder		class	Drupal\aggregator	core/modules/aggregator/src/FeedViewBuilder.php	View builder handler for aggregator feeds.

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