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
ContentEntity		class	Drupal\migrate_drupal\Plugin\migrate\source	core/modules/migrate_drupal/src/Plugin/migrate/source/ContentEntity.php	Source plugin to get content entities from the current version of Drupal.		1
ContentEntityBase		abstract class	Drupal\Core\Entity	core/lib/Drupal/Core/Entity/ContentEntityBase.php	Implements Entity Field API specific enhancements to the Entity class.	17	15
ContentEntityBaseMockableClass		class	Drupal\Tests\Core\Entity	core/tests/Drupal/Tests/Core/Entity/ContentEntityBaseMockableClass.php	A class extending ContentEntityBase for mocking purposes.		6
ContentEntityBaseUnitTest		class	Drupal\Tests\Core\Entity	core/tests/Drupal/Tests/Core/Entity/ContentEntityBaseUnitTest.php	@coversDefaultClass \Drupal\Core\Entity\ContentEntityBase[[api-linebreak]] @group Entity @group Access
ContentEntityChangedTest		class	Drupal\KernelTests\Core\Entity	core/tests/Drupal/KernelTests/Core/Entity/ContentEntityChangedTest.php	Tests basic EntityChangedInterface functionality.
ContentEntityCloneTest		class	Drupal\KernelTests\Core\Entity	core/tests/Drupal/KernelTests/Core/Entity/ContentEntityCloneTest.php	Tests proper cloning of content entities.
ContentEntityConfirmFormBase		abstract class	Drupal\Core\Entity	core/lib/Drupal/Core/Entity/ContentEntityConfirmFormBase.php	Provides a generic base class for an entity-based confirmation form.	2	1
ContentEntityConstructorTest		class	Drupal\Tests\migrate_drupal\Kernel\Plugin\migrate\source	core/modules/migrate_drupal/tests/src/Kernel/Plugin/migrate/source/ContentEntityConstructorTest.php	Tests the constructor of the entity content source plugin.
ContentEntityDeleteForm		class	Drupal\Core\Entity	core/lib/Drupal/Core/Entity/ContentEntityDeleteForm.php	Provides a generic base class for a content entity deletion form.	9	10
ContentEntityDenormalizer		final class	Drupal\jsonapi\Normalizer	core/modules/jsonapi/src/Normalizer/ContentEntityDenormalizer.php	Converts a JSON:API array structure into a Drupal entity object.			2
ContentEntityDeriver		class	Drupal\migrate_drupal\Plugin\migrate\source	core/modules/migrate_drupal/src/Plugin/migrate/source/ContentEntityDeriver.php	Deriver for content entity source plugins.
ContentEntityFieldMethodInvocationOrderTest		class	Drupal\KernelTests\Core\Entity	core/tests/Drupal/KernelTests/Core/Entity/ContentEntityFieldMethodInvocationOrderTest.php	Tests correct field method invocation order.
ContentEntityForm		class	Drupal\Core\Entity	core/lib/Drupal/Core/Entity/ContentEntityForm.php	Entity form variant for content entity types.	15	14
ContentEntityFormCorrectUserInputMappingOnFieldDeltaElementsTest		class	Drupal\FunctionalTests\Entity	core/tests/Drupal/FunctionalTests/Entity/ContentEntityFormCorrectUserInputMappingOnFieldDeltaElementsTest.php	Tests the correct mapping of user input on the correct field delta elements.
ContentEntityFormFieldValidationFilteringTest		class	Drupal\FunctionalTests\Entity	core/tests/Drupal/FunctionalTests/Entity/ContentEntityFormFieldValidationFilteringTest.php	Tests field validation filtering on content entity forms.
ContentEntityFormInterface		interface	Drupal\Core\Entity	core/lib/Drupal/Core/Entity/ContentEntityFormInterface.php	Defines a common interface for content entity form classes.	1	4
ContentEntityHasChangesTest		class	Drupal\KernelTests\Core\Entity	core/tests/Drupal/KernelTests/Core/Entity/ContentEntityHasChangesTest.php	Tests ContentEntityBase::hasTranslationChanges().
ContentEntityInterface		interface	Drupal\Core\Entity	core/lib/Drupal/Core/Entity/ContentEntityInterface.php	Defines a common interface for all content entity objects.	15	72
ContentEntityNonRevisionableFieldTest		class	Drupal\KernelTests\Core\Entity	core/tests/Drupal/KernelTests/Core/Entity/ContentEntityNonRevisionableFieldTest.php	Tests non-revisionable fields on revisionable (and translatable) entities.
ContentEntityNormalizer		class	Drupal\serialization\Normalizer	core/modules/serialization/src/Normalizer/ContentEntityNormalizer.php	Normalizes/denormalizes Drupal content entities into an array structure.		1	2
ContentEntityNormalizerTest		class	Drupal\Tests\serialization\Unit\Normalizer	core/modules/serialization/tests/src/Unit/Normalizer/ContentEntityNormalizerTest.php	@coversDefaultClass \Drupal\serialization\Normalizer\ContentEntityNormalizer[[api-linebreak]] @group serialization
ContentEntityNullStorage		class	Drupal\Core\Entity	core/lib/Drupal/Core/Entity/ContentEntityNullStorage.php	Defines a null entity storage.		3
ContentEntityNullStorageTest		class	Drupal\KernelTests\Core\Entity	core/tests/Drupal/KernelTests/Core/Entity/ContentEntityNullStorageTest.php	Tests ContentEntityNullStorage entity query support.
ContentEntityStorageBase		abstract class	Drupal\Core\Entity	core/lib/Drupal/Core/Entity/ContentEntityStorageBase.php	Base class for content entity storage handlers.	2	1
ContentEntityStorageBaseTest		class	Drupal\KernelTests\Core\Entity	core/tests/Drupal/KernelTests/Core/Entity/ContentEntityStorageBaseTest.php	@coversDefaultClass \Drupal\Core\Entity\ContentEntityStorageBase[[api-linebreak]]
ContentEntityStorageInterface		interface	Drupal\Core\Entity	core/lib/Drupal/Core/Entity/ContentEntityStorageInterface.php	A storage that supports content entity types.	8	14
ContentEntityTest		class	Drupal\Tests\migrate_drupal\Kernel\Plugin\migrate\source	core/modules/migrate_drupal/tests/src/Kernel/Plugin/migrate/source/ContentEntityTest.php	Tests the entity content source plugin.
ContentEntityType		class	Drupal\Core\Entity	core/lib/Drupal/Core/Entity/ContentEntityType.php	Provides an implementation of a content entity type and its metadata.	1	5
ContentEntityType		class	Drupal\Core\Entity\Annotation	core/lib/Drupal/Core/Entity/Annotation/ContentEntityType.php	Defines a content entity type annotation object.
ContentEntityTypeInterface		interface	Drupal\Core\Entity	core/lib/Drupal/Core/Entity/ContentEntityTypeInterface.php	Provides an interface for a content entity type and its metadata.	1	29
ContentImportTest		class	Drupal\FunctionalTests\DefaultContent	core/tests/Drupal/FunctionalTests/DefaultContent/ContentImportTest.php	@covers \Drupal\Core\DefaultContent\Importer[[api-linebreak]] @group DefaultContent @group Recipe
ContentLanguageSettings		class	Drupal\language\Entity	core/modules/language/src/Entity/ContentLanguageSettings.php	Defines the ContentLanguageSettings entity.		37
ContentLanguageSettingsException		class	Drupal\language	core/modules/language/src/ContentLanguageSettingsException.php	Exception thrown by ContentLanguageSettings when target bundle is not set.		1
ContentLanguageSettingsForm		class	Drupal\language\Form	core/modules/language/src/Form/ContentLanguageSettingsForm.php	Configure the content language settings for this site.			1
ContentLanguageSettingsInterface		interface	Drupal\language	core/modules/language/src/ContentLanguageSettingsInterface.php	Provides an interface defining language settings for content entities.	1	3
ContentLanguageSettingsJsonAnonTest		class	Drupal\Tests\language\Functional\Rest	core/modules/language/tests/src/Functional/Rest/ContentLanguageSettingsJsonAnonTest.php	@group rest
ContentLanguageSettingsJsonBasicAuthTest		class	Drupal\Tests\language\Functional\Rest	core/modules/language/tests/src/Functional/Rest/ContentLanguageSettingsJsonBasicAuthTest.php	@group rest
ContentLanguageSettingsJsonCookieTest		class	Drupal\Tests\language\Functional\Rest	core/modules/language/tests/src/Functional/Rest/ContentLanguageSettingsJsonCookieTest.php	@group rest
ContentLanguageSettingsResourceTestBase		abstract class	Drupal\Tests\language\Functional\Rest	core/modules/language/tests/src/Functional/Rest/ContentLanguageSettingsResourceTestBase.php		6
ContentLanguageSettingsTest		class	Drupal\Tests\jsonapi\Functional	core/modules/jsonapi/tests/src/Functional/ContentLanguageSettingsTest.php	JSON:API integration test for "ContentLanguageSettings" config entity type.
ContentLanguageSettingsUnitTest		class	Drupal\Tests\language\Unit	core/modules/language/tests/src/Unit/ContentLanguageSettingsUnitTest.php	@coversDefaultClass \Drupal\language\Entity\ContentLanguageSettings[[api-linebreak]] @group language
ContentLanguageSettingsValidationTest		class	Drupal\Tests\language\Kernel	core/modules/language/tests/src/Kernel/ContentLanguageSettingsValidationTest.php	Tests validation of content_language_settings entities.
ContentLanguageSettingsXmlAnonTest		class	Drupal\Tests\language\Functional\Rest	core/modules/language/tests/src/Functional/Rest/ContentLanguageSettingsXmlAnonTest.php	@group rest
ContentLanguageSettingsXmlBasicAuthTest		class	Drupal\Tests\language\Functional\Rest	core/modules/language/tests/src/Functional/Rest/ContentLanguageSettingsXmlBasicAuthTest.php	@group rest
ContentLanguageSettingsXmlCookieTest		class	Drupal\Tests\language\Functional\Rest	core/modules/language/tests/src/Functional/Rest/ContentLanguageSettingsXmlCookieTest.php	@group rest
ContentLength		class	Drupal\Core\StackMiddleware	core/lib/Drupal/Core/StackMiddleware/ContentLength.php	Adds a Content-Length HTTP header to responses.		1	2
ContentLength		final class	Drupal\big_pipe\StackMiddleware	core/modules/big_pipe/src/StackMiddleware/ContentLength.php	Defines a big pipe middleware that removes Content-Length headers.		1	2
ContentLengthTest		final class	Drupal\Tests\big_pipe\Unit\StackMiddleware	core/modules/big_pipe/tests/src/Unit/StackMiddleware/ContentLengthTest.php	Defines a test for ContentLength middleware.
ContentLengthTest		class	Drupal\FunctionalTests\HttpKernel	core/tests/Drupal/FunctionalTests/HttpKernel/ContentLengthTest.php	Tests Content-Length set by Drupal.
ContentLengthTest		class	Drupal\Tests\Core\StackMiddleware	core/tests/Drupal/Tests/Core/StackMiddleware/ContentLengthTest.php	@coversDefaultClass \Drupal\Core\StackMiddleware\ContentLength[[api-linebreak]] @group Middleware

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