Classes, traits, and interfaces - main - 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 1529

Name	Deprecated	Object type	Namespace	File name	Summary	Direct uses	Use statements	Strings
DefaultStyle		class	Drupal\views\Plugin\views\style	core/modules/views/src/Plugin/views/style/DefaultStyle.php	Unformatted style plugin to render rows.		1
DefaultSummary		class	Drupal\views\Plugin\views\style	core/modules/views/src/Plugin/views/style/DefaultSummary.php	The default style plugin for summaries.	1	1
DefaultTableMapping		class	Drupal\Core\Entity\Sql	core/lib/Drupal/Core/Entity/Sql/DefaultTableMapping.php	Defines a default table mapping class.	2	6
DefaultTableMappingIntegrationTest		class	Drupal\KernelTests\Core\Entity	core/tests/Drupal/KernelTests/Core/Entity/DefaultTableMappingIntegrationTest.php	Tests the default table mapping class for content entities stored in SQL.
DefaultTableMappingTest		class	Drupal\Tests\Core\Entity\Sql	core/tests/Drupal/Tests/Core/Entity/Sql/DefaultTableMappingTest.php	Tests Drupal\Core\Entity\Sql\DefaultTableMapping.
DefaultValue		class	Drupal\migrate\Plugin\migrate\process	core/modules/migrate/src/Plugin/migrate/process/DefaultValue.php	Returns a given default value if the input is empty.		1
DefaultValueTest		class	Drupal\Tests\migrate\Unit\process	core/modules/migrate/tests/src/Unit/process/DefaultValueTest.php	Tests the default_value process plugin.
DefaultValueWidgetTest		class	Drupal\Tests\field_ui\FunctionalJavascript	core/modules/field_ui/tests/src/FunctionalJavascript/DefaultValueWidgetTest.php	Tests the default value widget in Field UI.
DefaultViewRecentCommentsTest		class	Drupal\Tests\comment\Functional\Views	core/modules/comment/tests/src/Functional/Views/DefaultViewRecentCommentsTest.php	Tests results for the Recent Comments view shipped with the module.
DefaultViewsTest		class	Drupal\Tests\views_ui\Functional	core/modules/views_ui/tests/src/Functional/DefaultViewsTest.php	Tests enabling, disabling, and reverting default views via the listing page.
DefaultViewsTest		class	Drupal\Tests\views\Functional	core/modules/views/tests/src/Functional/DefaultViewsTest.php	Tests the default views provided by views.
DefaultWizardDeriver		class	Drupal\views\Plugin\Derivative	core/modules/views/src/Plugin/Derivative/DefaultWizardDeriver.php	A derivative class which provides automatic wizards for all base tables.		1
DefaultWorkspaceHandler		class	Drupal\workspaces\Entity\Handler	core/modules/workspaces/src/Entity/Handler/DefaultWorkspaceHandler.php	Common customizations for most entity types.	2	2
DefaultWorkspaceProvider		class	Drupal\workspaces\Provider	core/modules/workspaces/src/Provider/DefaultWorkspaceProvider.php	Defines the default workspace provider.		3
DefinedTestAccessCheck		class	Drupal\router_test\Access	core/modules/system/tests/modules/router_test_directory/src/Access/DefinedTestAccessCheck.php	Defines an access checker similar to DefaultAccessCheck.		1
DelayableQueueInterface		interface	Drupal\Core\Queue	core/lib/Drupal/Core/Queue/DelayableQueueInterface.php	Delayable queue interface.	1	1
DelayCacheTagsInvalidationHooks		class	Drupal\delay_cache_tags_invalidation\Hook	core/modules/system/tests/modules/delay_cache_tags_invalidation/src/Hook/DelayCacheTagsInvalidationHooks.php	Hook implementations for delay_cache_tags_invalidation.
DelayedRequeueException		class	Drupal\Core\Queue	core/lib/Drupal/Core/Queue/DelayedRequeueException.php	Throw this exception to leave an item in the queue until its lock expires.		5
Delete		class	Drupal\Core\Database\Query	core/lib/Drupal/Core/Database/Query/Delete.php	General class for an abstracted DELETE operation.	2	4
Delete		class	Drupal\pgsql\Driver\Database\pgsql	core/modules/pgsql/src/Driver/Database/pgsql/Delete.php	PostgreSQL implementation of \Drupal\Core\Database\Query\Delete.
Delete		class	Drupal\core_fake\Driver\Database\CoreFakeWithAllCustomClasses	core/tests/fixtures/database_drivers/module/core_fake/src/Driver/Database/CoreFakeWithAllCustomClasses/Delete.php	CoreFakeWithAllCustomClasses implementation of \Drupal\Core\Database\Delete.
DeleteAction		class	Drupal\Core\Action\Plugin\Action	core/lib/Drupal/Core/Action/Plugin/Action/DeleteAction.php	Redirects to an entity deletion form.
DeleteActionTest		class	Drupal\KernelTests\Core\Action	core/tests/Drupal/KernelTests/Core/Action/DeleteActionTest.php	Tests Delete Action.
DeleteDefaultLanguageException		class	Drupal\language\Exception	core/modules/language/src/Exception/DeleteDefaultLanguageException.php	Exception thrown when deleting the default language.		2
DeletedFieldsRepository		class	Drupal\Core\Field	core/lib/Drupal/Core/Field/DeletedFieldsRepository.php	Provides a repository for deleted field and field storage objects.			2
DeletedFieldsRepositoryInterface		interface	Drupal\Core\Field	core/lib/Drupal/Core/Field/DeletedFieldsRepositoryInterface.php	Provides an interface for a deleted fields repository.	1	2
DeletedWorkspaceConstraint		class	Drupal\workspaces\Plugin\Validation\Constraint	core/modules/workspaces/src/Plugin/Validation/Constraint/DeletedWorkspaceConstraint.php	Deleted workspace constraint.
DeletedWorkspaceConstraintValidator		class	Drupal\workspaces\Plugin\Validation\Constraint	core/modules/workspaces/src/Plugin/Validation/Constraint/DeletedWorkspaceConstraintValidator.php	Checks if data still exists for a deleted workspace ID.
DeleteForm		class	Drupal\comment\Form	core/modules/comment/src/Form/DeleteForm.php	Provides the comment delete confirmation form.		1
DeleteMultiple		class	Drupal\node\Form	core/modules/node/src/Form/DeleteMultiple.php	Provides a node deletion confirmation form.		1	1
DeleteMultipleForm		class	Drupal\Core\Entity\Form	core/lib/Drupal/Core/Entity/Form/DeleteMultipleForm.php	Provides an entities deletion confirmation form.	2	6
DeleteMultipleFormTest		class	Drupal\FunctionalTests\Entity	core/tests/Drupal/FunctionalTests/Entity/DeleteMultipleFormTest.php	Tests the delete multiple confirmation form.
DeleteTest		class	Drupal\Tests\file\Kernel	core/modules/file/tests/src/Kernel/DeleteTest.php	Tests the file delete function.
DeleteTruncateTest		class	Drupal\KernelTests\Core\Database	core/tests/Drupal/KernelTests/Core/Database/DeleteTruncateTest.php	Tests delete and truncate queries.
DemoteNode		class	Drupal\node\Plugin\Action	core/modules/node/src/Plugin/Action/DemoteNode.php	Demotes a node.
DemoUmamiContentHooks		class	Drupal\demo_umami_content\Hook	core/profiles/demo_umami/modules/demo_umami_content/src/Hook/DemoUmamiContentHooks.php	Hook implementations for demo_umami_content.
DemoUmamiHooks		class	Drupal\demo_umami\Hook	core/profiles/demo_umami/src/Hook/DemoUmamiHooks.php	Hook implementations for demo_umami.
DemoUmamiProfileTest		class	Drupal\Tests\demo_umami\Functional	core/profiles/demo_umami/tests/src/Functional/DemoUmamiProfileTest.php	Tests demo_umami profile.
DemoUmamiRequirements		class	Drupal\demo_umami\Hook	core/profiles/demo_umami/src/Hook/DemoUmamiRequirements.php	Requirements for the Demo: Umami Food Magazine (Experimental) profile.
DenyAdminRoutes		class	Drupal\dynamic_page_cache\PageCache\ResponsePolicy	core/modules/dynamic_page_cache/src/PageCache/ResponsePolicy/DenyAdminRoutes.php	Cache policy for routes with the '_admin_route' option set.			2
DenyNoCacheRoutes		class	Drupal\Core\PageCache\ResponsePolicy	core/lib/Drupal/Core/PageCache/ResponsePolicy/DenyNoCacheRoutes.php	Cache policy for routes with the 'no_cache' option set.		1	2
DenyNoCacheRoutesTest		class	Drupal\Tests\Core\PageCache	core/tests/Drupal/Tests/Core/PageCache/DenyNoCacheRoutesTest.php	Tests Drupal\Core\PageCache\ResponsePolicy\DenyNoCacheRoutes.
DenyTestAuthRequests		class	Drupal\rest_test\PageCache\RequestPolicy	core/modules/rest/tests/modules/rest_test/src/PageCache/RequestPolicy/DenyTestAuthRequests.php	Cache policy for pages requested with REST Test Auth.			2
Dependency		class	Drupal\Core\Extension	core/lib/Drupal/Core/Extension/Dependency.php	A value object representing dependency information.		4
DependencyFieldItem		class	Drupal\Tests\field\Unit	core/modules/field/tests/src/Unit/FieldConfigEntityUnitTest.php	A test class.
DependencyHookInvocationTest		class	Drupal\Tests\system\Functional\UpdateSystem	core/modules/system/tests/src/Functional/UpdateSystem/DependencyHookInvocationTest.php	Tests the hook invocation for determining update dependencies.
DependencyMissingTest		class	Drupal\Tests\system\Functional\UpdateSystem	core/modules/system/tests/src/Functional/UpdateSystem/DependencyMissingTest.php	Tests that missing update dependencies are correctly flagged.
DependencyOrderingTest		class	Drupal\Tests\system\Functional\UpdateSystem	core/modules/system/tests/src/Functional/UpdateSystem/DependencyOrderingTest.php	Tests that update functions are run in the proper order.
DependencySerializationTest		class	Drupal\Tests\Core\DependencyInjection	core/tests/Drupal/Tests/Core/DependencyInjection/DependencySerializationTest.php	Tests Drupal\Core\DependencyInjection\DependencySerializationTrait.
DependencySerializationTestDummy		class	Drupal\Tests\Core\DependencyInjection	core/tests/Drupal/Tests/Core/DependencyInjection/DependencySerializationTest.php	Defines a test class which has a single service as dependency.

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