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
EntityFormDisplayEditForm		class	Drupal\field_ui\Form	core/modules/field_ui/src/Form/EntityFormDisplayEditForm.php	Edit form for the EntityFormDisplay entity type.	1	1
EntityFormDisplayHalJsonAnonTest		class	Drupal\FunctionalTests\Hal	core/tests/Drupal/FunctionalTests/Hal/EntityFormDisplayHalJsonAnonTest.php	@group hal
EntityFormDisplayHalJsonBasicAuthTest		class	Drupal\FunctionalTests\Hal	core/tests/Drupal/FunctionalTests/Hal/EntityFormDisplayHalJsonBasicAuthTest.php	@group hal
EntityFormDisplayHalJsonCookieTest		class	Drupal\FunctionalTests\Hal	core/tests/Drupal/FunctionalTests/Hal/EntityFormDisplayHalJsonCookieTest.php	@group hal
EntityFormDisplayInterface		interface	Drupal\Core\Entity\Display	core/lib/Drupal/Core/Entity/Display/EntityFormDisplayInterface.php	Provides a common interface for entity form displays.	1	15
EntityFormDisplayJsonAnonTest		class	Drupal\FunctionalTests\Rest	core/tests/Drupal/FunctionalTests/Rest/EntityFormDisplayJsonAnonTest.php	@group rest
EntityFormDisplayJsonBasicAuthTest		class	Drupal\FunctionalTests\Rest	core/tests/Drupal/FunctionalTests/Rest/EntityFormDisplayJsonBasicAuthTest.php	@group rest
EntityFormDisplayJsonCookieTest		class	Drupal\FunctionalTests\Rest	core/tests/Drupal/FunctionalTests/Rest/EntityFormDisplayJsonCookieTest.php	@group rest
EntityFormDisplayResourceTestBase		abstract class	Drupal\FunctionalTests\Rest	core/tests/Drupal/FunctionalTests/Rest/EntityFormDisplayResourceTestBase.php		10	4
EntityFormDisplayResourceTestBase	in drupal:8.6.0 and is removed from drupal:9.0.0. Use Drupal\FunctionalTests\Rest\EntityFormDisplayResourceTestBase instead.	abstract class	Drupal\Tests\rest\Functional\EntityResource\EntityFormDisplay	core/modules/rest/tests/src/Functional/EntityResource/EntityFormDisplay/EntityFormDisplayResourceTestBase.php
EntityFormDisplayTest		class	Drupal\Tests\field_ui\Kernel	core/modules/field_ui/tests/src/Kernel/EntityFormDisplayTest.php	Tests the entity display configuration entities.
EntityFormDisplayTest		class	Drupal\Tests\jsonapi\Functional	core/modules/jsonapi/tests/src/Functional/EntityFormDisplayTest.php	JSON:API integration test for the "EntityFormDisplay" config entity type.
EntityFormDisplayXmlAnonTest		class	Drupal\FunctionalTests\Rest	core/tests/Drupal/FunctionalTests/Rest/EntityFormDisplayXmlAnonTest.php	@group rest
EntityFormDisplayXmlBasicAuthTest		class	Drupal\FunctionalTests\Rest	core/tests/Drupal/FunctionalTests/Rest/EntityFormDisplayXmlBasicAuthTest.php	@group rest
EntityFormDisplayXmlCookieTest		class	Drupal\FunctionalTests\Rest	core/tests/Drupal/FunctionalTests/Rest/EntityFormDisplayXmlCookieTest.php	@group rest
EntityFormInterface		interface	Drupal\Core\Entity	core/lib/Drupal/Core/Entity/EntityFormInterface.php	Defines an interface for entity form classes.	2	3
EntityFormMode		class	Drupal\Core\Entity\Entity	core/lib/Drupal/Core/Entity/Entity/EntityFormMode.php	Defines the entity form mode configuration entity class.		8
EntityFormModeAddForm		class	Drupal\field_ui\Form	core/modules/field_ui/src/Form/EntityFormModeAddForm.php	Provides the add form for entity display modes.
EntityFormModeHalJsonAnonTest		class	Drupal\FunctionalTests\Hal	core/tests/Drupal/FunctionalTests/Hal/EntityFormModeHalJsonAnonTest.php	@group hal
EntityFormModeHalJsonBasicAuthTest		class	Drupal\FunctionalTests\Hal	core/tests/Drupal/FunctionalTests/Hal/EntityFormModeHalJsonBasicAuthTest.php	@group hal
EntityFormModeHalJsonCookieTest		class	Drupal\FunctionalTests\Hal	core/tests/Drupal/FunctionalTests/Hal/EntityFormModeHalJsonCookieTest.php	@group hal
EntityFormModeInterface		interface	Drupal\Core\Entity	core/lib/Drupal/Core/Entity/EntityFormModeInterface.php	Provides an interface defining an entity form mode entity type.	1	2
EntityFormModeJsonAnonTest		class	Drupal\FunctionalTests\Rest	core/tests/Drupal/FunctionalTests/Rest/EntityFormModeJsonAnonTest.php	@group rest
EntityFormModeJsonBasicAuthTest		class	Drupal\FunctionalTests\Rest	core/tests/Drupal/FunctionalTests/Rest/EntityFormModeJsonBasicAuthTest.php	@group rest
EntityFormModeJsonCookieTest		class	Drupal\FunctionalTests\Rest	core/tests/Drupal/FunctionalTests/Rest/EntityFormModeJsonCookieTest.php	@group rest
EntityFormModeListBuilder		class	Drupal\field_ui	core/modules/field_ui/src/EntityFormModeListBuilder.php	Defines a class to build a listing of form mode entities.
EntityFormModeResourceTestBase	in drupal:8.6.0 and is removed from drupal:9.0.0. Use Drupal\FunctionalTests\Rest\EntityFormModeResourceTestBase instead.	abstract class	Drupal\Tests\rest\Functional\EntityResource\EntityFormMode	core/modules/rest/tests/src/Functional/EntityResource/EntityFormMode/EntityFormModeResourceTestBase.php
EntityFormModeResourceTestBase		abstract class	Drupal\FunctionalTests\Rest	core/tests/Drupal/FunctionalTests/Rest/EntityFormModeResourceTestBase.php		10	4
EntityFormModeTest		class	Drupal\Tests\jsonapi\Functional	core/modules/jsonapi/tests/src/Functional/EntityFormModeTest.php	JSON:API integration test for the "EntityFormMode" config entity type.
EntityFormModeXmlAnonTest		class	Drupal\FunctionalTests\Rest	core/tests/Drupal/FunctionalTests/Rest/EntityFormModeXmlAnonTest.php	@group rest
EntityFormModeXmlBasicAuthTest		class	Drupal\FunctionalTests\Rest	core/tests/Drupal/FunctionalTests/Rest/EntityFormModeXmlBasicAuthTest.php	@group rest
EntityFormModeXmlCookieTest		class	Drupal\FunctionalTests\Rest	core/tests/Drupal/FunctionalTests/Rest/EntityFormModeXmlCookieTest.php	@group rest
EntityFormTest		class	Drupal\Tests\Core\Entity	core/tests/Drupal/Tests/Core/Entity/EntityFormTest.php	@coversDefaultClass \Drupal\Core\Entity\EntityForm @group Entity
EntityFormTest		class	Drupal\Tests\system\Functional\Entity	core/modules/system/tests/src/Functional/Entity/EntityFormTest.php	Tests the entity form.
EntityHandlerBase		abstract class	Drupal\Core\Entity	core/lib/Drupal/Core/Entity/EntityHandlerBase.php	Provides a base class for entity handlers.	6	1
EntityHandlerInterface		interface	Drupal\Core\Entity	core/lib/Drupal/Core/Entity/EntityHandlerInterface.php	Defines an interface for entity handlers.	14	12
EntityHasFieldConstraint		class	Drupal\Core\Entity\Plugin\Validation\Constraint	core/lib/Drupal/Core/Entity/Plugin/Validation/Constraint/EntityHasFieldConstraint.php	Checks if a value is an entity that has a specific field.
EntityHasFieldConstraintValidator		class	Drupal\Core\Entity\Plugin\Validation\Constraint	core/lib/Drupal/Core/Entity/Plugin/Validation/Constraint/EntityHasFieldConstraintValidator.php	Validates the EntityHasField constraint.
EntityHasFieldConstraintValidatorTest		class	Drupal\KernelTests\Core\Entity	core/tests/Drupal/KernelTests/Core/Entity/EntityHasFieldConstraintValidatorTest.php	@covers \Drupal\Core\Entity\Plugin\Validation\Constraint\EntityHasFieldConstraintValidator
EntityImageStyle		class	Drupal\image\Plugin\migrate\destination	core/modules/image/src/Plugin/migrate/destination/EntityImageStyle.php	Every migration that uses this destination must have an optional dependency on the d6_file migration to ensure it runs first.
EntityInterface		interface	Drupal\Core\Entity	core/lib/Drupal/Core/Entity/EntityInterface.php	Defines a common interface for all entity objects.	11	310
EntityKernelTestBase		abstract class	Drupal\KernelTests\Core\Entity	core/tests/Drupal/KernelTests/Core/Entity/EntityKernelTestBase.php	Defines an abstract test base for entity kernel tests.	77	39
EntityKernelTestBaseTest		class	Drupal\KernelTests\Core\Entity	core/tests/Drupal/KernelTests/Core/Entity/EntityKernelTestBaseTest.php	@covers \Drupal\KernelTests\Core\Entity\EntityKernelTestBase
EntityKeysTest		class	Drupal\KernelTests\Core\Entity	core/tests/Drupal/KernelTests/Core/Entity/EntityKeysTest.php	Test the behavior of entity keys.
EntityLabel		class	Drupal\views\Plugin\views\field	core/modules/views/src/Plugin/views/field/EntityLabel.php	Field handler to display entity label optionally linked to entity page.
EntityLanguageTestBase		abstract class	Drupal\KernelTests\Core\Entity	core/tests/Drupal/KernelTests/Core/Entity/EntityLanguageTestBase.php	Base class for language-aware entity tests.	3
EntityLastInstalledSchemaRepository		class	Drupal\Core\Entity	core/lib/Drupal/Core/Entity/EntityLastInstalledSchemaRepository.php	Provides a repository for installed entity definitions.			2
EntityLastInstalledSchemaRepositoryInterface		interface	Drupal\Core\Entity	core/lib/Drupal/Core/Entity/EntityLastInstalledSchemaRepositoryInterface.php	Provides an interface for an installed entity definition repository.	1	9
EntityLegacyTest		class	Drupal\KernelTests\Core\Entity	core/tests/Drupal/KernelTests/Core/Entity/EntityLegacyTest.php	Tests legacy entity functions.
EntityLink		class	Drupal\comment\Plugin\views\field	core/modules/comment/src/Plugin/views/field/EntityLink.php	Handler for showing comment module's entity links.

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