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
DebugExtension final class Drupal\Core\Template core/lib/Drupal/Core/Template/DebugExtension.php A class providing Drupal Twig Debug extension. 2
DecimalData class Drupal\Core\TypedData\Plugin\DataType core/lib/Drupal/Core/TypedData/Plugin/DataType/DecimalData.php The decimal data type. 1
DecimalFormatter class Drupal\Core\Field\Plugin\Field\FieldFormatter core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/DecimalFormatter.php Plugin implementation of the 'number_decimal' formatter.
DecimalInterface interface Drupal\Core\TypedData\Type core/lib/Drupal/Core/TypedData/Type/DecimalInterface.php Interface for decimal numbers. 1 3
DecimalItem class Drupal\Core\Field\Plugin\Field\FieldType core/lib/Drupal/Core/Field/Plugin/Field/FieldType/DecimalItem.php Defines the 'decimal' field type.
DecoratedServiceTest class Drupal\Tests\system\Kernel core/modules/system/tests/src/Kernel/DecoratedServiceTest.php Test handling of decorated services with the reverse container.
DecoupledMenusTestHooks class Drupal\decoupled_menus_test\Hook core/modules/system/tests/modules/decoupled_menus_test/src/Hook/DecoupledMenusTestHooks.php Hook implementations for decoupled_menus_test.
DefaultAccessCheck class Drupal\Core\Access core/lib/Drupal/Core/Access/DefaultAccessCheck.php Allows access to routes to be controlled by an '_access' boolean parameter. 2 2
DefaultAccessCheckTest class Drupal\Tests\Core\Access core/tests/Drupal/Tests/Core/Access/DefaultAccessCheckTest.php Tests Drupal\Core\Access\DefaultAccessCheck.
DefaultConfigTest class Drupal\Tests\Core\Extension core/tests/Drupal/Tests/Core/Extension/DefaultConfigTest.php Tests default configuration of the Extension system.
DefaultConfigTest class Drupal\KernelTests\Config core/tests/Drupal/KernelTests/Config/DefaultConfigTest.php Tests that the installed config matches the default config.
DefaultContentFilesAccessTest class Drupal\Tests\demo_umami_content\Functional core/profiles/demo_umami/modules/demo_umami_content/tests/src/Functional/DefaultContentFilesAccessTest.php Tests that files provided by demo_umami_content are not accessible.
DefaultContentSubscriber class Drupal\media\EventSubscriber core/modules/media/src/EventSubscriber/DefaultContentSubscriber.php Subscribes to default content-related events.
DefaultContentSubscriber class Drupal\file\EventSubscriber core/modules/file/src/EventSubscriber/DefaultContentSubscriber.php Subscribes to default content-related events.
DefaultContentSubscriber class Drupal\content_moderation\EventSubscriber core/modules/content_moderation/src/EventSubscriber/DefaultContentSubscriber.php Subscribes to default content-related events.
DefaultContentSubscriber class Drupal\layout_builder\EventSubscriber core/modules/layout_builder/src/EventSubscriber/DefaultContentSubscriber.php Subscribes to default content-related events.
DefaultContentSubscriber class Drupal\link\EventSubscriber core/modules/link/src/EventSubscriber/DefaultContentSubscriber.php Subscribes to default content-related events.
DefaultContentSubscriber class Drupal\path\EventSubscriber core/modules/path/src/EventSubscriber/DefaultContentSubscriber.php Subscribes to default content-related events.
DefaultContentSubscriber final class Drupal\menu_link_content\EventSubscriber core/modules/menu_link_content/src/EventSubscriber/DefaultContentSubscriber.php Subscribes to default content-related events. 1
DefaultContentTest class Drupal\Tests\menu_link_content\Kernel core/modules/menu_link_content/tests/src/Kernel/DefaultContentTest.php Tests exporting menu links in YAML format.
DefaultDisplay class Drupal\views\Plugin\views\display core/modules/views/src/Plugin/views/display/DefaultDisplay.php A plugin to handle defaults on a view. 3
DefaultDisplayExtender class Drupal\views\Plugin\views\display_extender core/modules/views/src/Plugin/views/display_extender/DefaultDisplayExtender.php Default display extender plugin; does nothing.
DefaultExceptionHtmlSubscriber class Drupal\Core\EventSubscriber core/lib/Drupal/Core/EventSubscriber/DefaultExceptionHtmlSubscriber.php Exception subscriber for handling core default HTML error pages. 1 2
DefaultExceptionSubscriber class Drupal\jsonapi\EventSubscriber core/modules/jsonapi/src/EventSubscriber/DefaultExceptionSubscriber.php Serializes exceptions in compliance with the JSON:API specification. 2
DefaultExceptionSubscriber class Drupal\serialization\EventSubscriber core/modules/serialization/src/EventSubscriber/DefaultExceptionSubscriber.php Handles default error responses in serialization formats. 1 2 2
DefaultExceptionSubscriberTest class Drupal\Tests\serialization\Unit\EventSubscriber core/modules/serialization/tests/src/Unit/EventSubscriber/DefaultExceptionSubscriberTest.php Tests Drupal\serialization\EventSubscriber\DefaultExceptionSubscriber.
DefaultFactory class Drupal\Component\Plugin\Factory core/lib/Drupal/Component/Plugin/Factory/DefaultFactory.php Default plugin factory. 2 13
DefaultFactoryTest class Drupal\Tests\Component\Plugin core/tests/Drupal/Tests/Component/Plugin/DefaultFactoryTest.php Tests Drupal\Component\Plugin\Factory\DefaultFactory.
DefaultFileFormatter class Drupal\file\Plugin\Field\FieldFormatter core/modules/file/src/Plugin/Field/FieldFormatter/DefaultFileFormatter.php Formatter for a text field on a file entity that links the field to the file.
DefaultFormatTest class Drupal\FunctionalTests\Routing core/tests/Drupal/FunctionalTests/Routing/DefaultFormatTest.php Tests Default Format.
DefaultFormatTestController class Drupal\default_format_test core/modules/system/tests/modules/default_format_test/src/DefaultFormatTestController.php Controller for testing default route format.
DefaultHtmlRouteProvider class Drupal\Core\Entity\Routing core/lib/Drupal/Core/Entity/Routing/DefaultHtmlRouteProvider.php Provides HTML routes for entities. 3 25
DefaultHtmlRouteProviderTest class Drupal\Tests\Core\Entity\Routing core/tests/Drupal/Tests/Core/Entity/Routing/DefaultHtmlRouteProviderTest.php Tests Drupal\Core\Entity\Routing\DefaultHtmlRouteProvider.
DefaultLangcode class Drupal\language\Plugin\migrate\destination core/modules/language/src/Plugin/migrate/destination/DefaultLangcode.php Provides a destination plugin for the default langcode config.
DefaultLanguageItem class Drupal\language core/modules/language/src/DefaultLanguageItem.php Alternative plugin implementation of the 'language' field type.
DefaultLanguageRenderer class Drupal\views\Entity\Render core/modules/views/src/Entity/Render/DefaultLanguageRenderer.php Renders entities in their default language.
DefaultLazyPluginCollection class Drupal\Core\Plugin core/lib/Drupal/Core/Plugin/DefaultLazyPluginCollection.php Provides a default plugin collection for a plugin type. 5 8
DefaultLazyPluginCollectionTest class Drupal\Tests\Core\Plugin core/tests/Drupal/Tests/Core/Plugin/DefaultLazyPluginCollectionTest.php Tests Drupal\Core\Plugin\DefaultLazyPluginCollection.
DefaultMenuLinkTreeManipulators class Drupal\Core\Menu core/lib/Drupal/Core/Menu/DefaultMenuLinkTreeManipulators.php Provides a couple of menu link tree manipulators. 1 2
DefaultMenuLinkTreeManipulatorsTest class Drupal\Tests\Core\Menu core/tests/Drupal/Tests/Core/Menu/DefaultMenuLinkTreeManipulatorsTest.php Tests the default menu link tree manipulators.
DefaultMetatagsTest class Drupal\Tests\system\Functional\Page core/modules/system/tests/src/Functional/Page/DefaultMetatagsTest.php Tests default HTML metatags on a page.
DefaultMetatagsTest class Drupal\Tests\system\Kernel\Page core/modules/system/tests/src/Kernel/Page/DefaultMetatagsTest.php Tests default HTML metatags on a page.
DefaultMobileMetaTagsTest class Drupal\Tests\system\Kernel\System core/modules/system/tests/src/Kernel/System/DefaultMobileMetaTagsTest.php Confirm that the default mobile meta tags appear as expected.
DefaultMobileMetaTagsTest class Drupal\Tests\system\Functional\System core/modules/system/tests/src/Functional/System/DefaultMobileMetaTagsTest.php Confirm that the default mobile meta tags appear as expected.
DefaultModerationStateTest class Drupal\Tests\content_moderation\Functional core/modules/content_moderation/tests/src/Functional/DefaultModerationStateTest.php Tests setting a custom default moderation state.
DefaultNegotiator class Drupal\Core\Theme core/lib/Drupal/Core/Theme/DefaultNegotiator.php Determines the default theme of the site. 2
DefaultPasswordGenerator class Drupal\Core\Password core/lib/Drupal/Core/Password/DefaultPasswordGenerator.php Provides a default password generator. 1 2
DefaultPasswordGeneratorTest class Drupal\Tests\Core\Password core/tests/Drupal/Tests/Core/Password/DefaultPasswordGeneratorTest.php Unit tests for password generator.
DefaultPluginManager class Drupal\Core\Plugin core/lib/Drupal/Core/Plugin/DefaultPluginManager.php Base class for plugin managers. 51 53
DefaultPluginManagerTest class Drupal\Tests\Core\Plugin core/tests/Drupal/Tests/Core/Plugin/DefaultPluginManagerTest.php Tests the DefaultPluginManager.

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