Classes, traits, and interfaces - 9.5.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 1523

Name	Deprecated	Object type	Namespace	File name	Summary	Direct uses	Use statements	Strings
LayoutRebuildTrait		trait	Drupal\layout_builder\Controller	core/modules/layout_builder/src/Controller/LayoutRebuildTrait.php	Provides AJAX responses to rebuild the Layout Builder.		4
LayoutRestTestBase		abstract class	Drupal\Tests\layout_builder\Functional\Rest	core/modules/layout_builder/tests/src/Functional/Rest/LayoutRestTestBase.php	Base class for Layout Builder REST tests.	1
LayoutSectionItem		class	Drupal\layout_builder\Plugin\Field\FieldType	core/modules/layout_builder/src/Plugin/Field/FieldType/LayoutSectionItem.php	Plugin implementation of the 'layout_section' field type.
LayoutSectionItemList		class	Drupal\layout_builder\Field	core/modules/layout_builder/src/Field/LayoutSectionItemList.php	Defines an item list class for layout section fields.
LayoutSectionItemListTest		class	Drupal\Tests\layout_builder\Kernel	core/modules/layout_builder/tests/src/Kernel/LayoutSectionItemListTest.php	Tests the field type for Layout Sections.
LayoutSectionStorageParamConverter		class	Drupal\layout_builder\Routing	core/modules/layout_builder/src/Routing/LayoutSectionStorageParamConverter.php	Loads the section storage from the routing defaults.		1	2
LayoutSectionStorageParamConverterTest		class	Drupal\Tests\layout_builder\Unit	core/modules/layout_builder/tests/src/Unit/LayoutSectionStorageParamConverterTest.php	@coversDefaultClass \Drupal\layout_builder\Routing\LayoutSectionStorageParamConverter[[api-linebreak]]
LayoutSectionTest		class	Drupal\Tests\layout_builder\Functional	core/modules/layout_builder/tests/src/Functional/LayoutSectionTest.php	Tests the rendering of a layout section field.
LayoutTempstoreRepository		class	Drupal\layout_builder	core/modules/layout_builder/src/LayoutTempstoreRepository.php	Provides a mechanism for loading layouts from tempstore.		1	2
LayoutTempstoreRepositoryInterface		interface	Drupal\layout_builder	core/modules/layout_builder/src/LayoutTempstoreRepositoryInterface.php	Provides an interface for loading layouts from tempstore.	1	16
LayoutTempstoreRepositoryTest		class	Drupal\Tests\layout_builder\Unit	core/modules/layout_builder/tests/src/Unit/LayoutTempstoreRepositoryTest.php	@coversDefaultClass \Drupal\layout_builder\LayoutTempstoreRepository[[api-linebreak]] @group layout_builder
LayoutTempstoreRouteEnhancer		class	Drupal\layout_builder\Routing	core/modules/layout_builder/src/Routing/LayoutTempstoreRouteEnhancer.php	Loads the section storage from the layout tempstore.		1	2
LayoutTempstoreRouteEnhancerTest		class	Drupal\Tests\layout_builder\Unit	core/modules/layout_builder/tests/src/Unit/LayoutTempstoreRouteEnhancerTest.php	@coversDefaultClass \Drupal\layout_builder\Routing\LayoutTempstoreRouteEnhancer[[api-linebreak]]
LayoutTest		class	Drupal\Tests\layout_discovery\Kernel	core/modules/layout_discovery/tests/src/Kernel/LayoutTest.php	Tests Layout functionality.
LayoutTestDependenciesPlugin		class	Drupal\layout_test\Plugin\Layout	core/modules/system/tests/modules/layout_test/src/Plugin/Layout/LayoutTestDependenciesPlugin.php	Provides a plugin that contains config dependencies.
LayoutTestPlugin		class	Drupal\layout_test\Plugin\Layout	core/modules/system/tests/modules/layout_test/src/Plugin/Layout/LayoutTestPlugin.php	The plugin that handles the default layout template.
LayoutWithoutLabel		class	Drupal\layout_builder_test\Plugin\Layout	core/modules/layout_builder/tests/modules/layout_builder_test/src/Plugin/Layout/LayoutWithoutLabel.php	Layout plugin without a label configuration.
LazyContextRepository		class	Drupal\Core\Plugin\Context	core/lib/Drupal/Core/Plugin/Context/LazyContextRepository.php	Provides a context repository which uses context provider services.		2	2
LazyContextRepositoryTest		class	Drupal\Tests\Core\Plugin\Context	core/tests/Drupal/Tests/Core/Plugin/Context/LazyContextRepositoryTest.php	@coversDefaultClass \Drupal\Core\Plugin\Context\LazyContextRepository[[api-linebreak]] @group context
LazyPluginCollection		abstract class	Drupal\Component\Plugin	core/lib/Drupal/Component/Plugin/LazyPluginCollection.php	Defines an object which stores multiple plugin instances to lazy load them.	3	3
LazyPluginCollectionTestBase		abstract class	Drupal\Tests\Core\Plugin	core/tests/Drupal/Tests/Core/Plugin/LazyPluginCollectionTestBase.php	Provides a base class for plugin collection tests.	2
LazyRouteCollection		class	Drupal\Core\Routing	core/lib/Drupal/Core/Routing/LazyRouteCollection.php			1
LazyRouteCollectionTest		class	Drupal\Tests\Core\Routing	core/tests/Drupal/Tests/Core/Routing/LazyRouteCollectionTest.php	@coversDefaultClass \Drupal\Core\Routing\LazyRouteCollection[[api-linebreak]]
LazyRouteProviderInstallTest		class	Drupal\FunctionalTests\Routing	core/tests/Drupal/FunctionalTests/Routing/LazyRouteProviderInstallTest.php	@group routing
LegacyExtensionPathResolverTest		class	Drupal\KernelTests\Core\Extension	core/tests/Drupal/KernelTests/Core/Extension/LegacyExtensionPathResolverTest.php	Tests the extension path resolver deprecations.
LegacyFileTest		class	Drupal\Tests\file\Kernel	core/modules/file/tests/src/Kernel/LegacyFileTest.php	Tests deprecated file functions.
LegacyMimeTypeGuesser		class	Drupal\Tests\Core\DependencyInjection\Compiler	core/tests/Drupal/Tests/Core/DependencyInjection/Compiler/MimeTypePassTest.php
LegacyScriptsTest		class	Drupal\BuildTests\Composer	core/tests/Drupal/BuildTests/Composer/LegacyScriptsTest.php	@group Composer @group legacy @requires externalCommand composer @coversDefaultClass \Drupal\Core\Composer\Composer[[api-linebreak]]
LegacyServiceTest		class	Drupal\KernelTests\Core	core/tests/Drupal/KernelTests/Core/LegacyServiceTest.php	Tests deprecated core services.
LegacyStyleSheetsRemoveTest		class	Drupal\Tests\system\Functional\Theme	core/modules/system/tests/src/Functional/Theme/LegacyStyleSheetsRemoveTest.php	Tests the legacy stylesheets-remove key.
LengthConstraint		class	Drupal\Core\Validation\Plugin\Validation\Constraint	core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/LengthConstraint.php	Length constraint.
LibrariesDirectoryFileFinder		class	Drupal\Core\Asset	core/lib/Drupal/Core/Asset/LibrariesDirectoryFileFinder.php	Finds files that are located in the supported 'libraries' directories.		2	2
LibrariesDirectoryFileFinderTest		class	Drupal\Tests\Core\Asset	core/tests/Drupal/Tests/Core/Asset/LibrariesDirectoryFileFinderTest.php	@coversDefaultClass \Drupal\Core\Asset\LibrariesDirectoryFileFinder[[api-linebreak]] @group Asset
LibraryDefinitionMissingLicenseException		class	Drupal\Core\Asset\Exception	core/lib/Drupal/Core/Asset/Exception/LibraryDefinitionMissingLicenseException.php	Defines a custom exception if a library has a remote but no license.		2
LibraryDependencyResolver		class	Drupal\Core\Asset	core/lib/Drupal/Core/Asset/LibraryDependencyResolver.php	Resolves the dependencies of asset (CSS/JavaScript) libraries.		1	2
LibraryDependencyResolverInterface		interface	Drupal\Core\Asset	core/lib/Drupal/Core/Asset/LibraryDependencyResolverInterface.php	Resolves the dependencies of asset (CSS/JavaScript) libraries.	1
LibraryDependencyResolverTest		class	Drupal\Tests\Core\Asset	core/tests/Drupal/Tests/Core/Asset/LibraryDependencyResolverTest.php	@coversDefaultClass \Drupal\Core\Asset\LibraryDependencyResolver[[api-linebreak]] @group Asset
LibraryDiscovery		class	Drupal\Core\Asset	core/lib/Drupal/Core/Asset/LibraryDiscovery.php	Discovers available asset libraries in Drupal.		1	2
LibraryDiscoveryCollector		class	Drupal\Core\Asset	core/lib/Drupal/Core/Asset/LibraryDiscoveryCollector.php	A CacheCollector implementation for building library extension info.		1	2
LibraryDiscoveryCollectorTest		class	Drupal\Tests\Core\Asset	core/tests/Drupal/Tests/Core/Asset/LibraryDiscoveryCollectorTest.php	@coversDefaultClass \Drupal\Core\Asset\LibraryDiscoveryCollector[[api-linebreak]] @group Asset
LibraryDiscoveryIntegrationTest		class	Drupal\KernelTests\Core\Asset	core/tests/Drupal/KernelTests/Core/Asset/LibraryDiscoveryIntegrationTest.php	Tests the library discovery and library discovery parser.
LibraryDiscoveryInterface		interface	Drupal\Core\Asset	core/lib/Drupal/Core/Asset/LibraryDiscoveryInterface.php	Discovers information for asset (CSS/JavaScript) libraries.	1	1
LibraryDiscoveryParser		class	Drupal\Core\Asset	core/lib/Drupal/Core/Asset/LibraryDiscoveryParser.php	Parses library files to get extension data.	1	1	2
LibraryDiscoveryParserTest		class	Drupal\Tests\Core\Asset	core/tests/Drupal/Tests/Core/Asset/LibraryDiscoveryParserTest.php	@coversDefaultClass \Drupal\Core\Asset\LibraryDiscoveryParser[[api-linebreak]] @group Asset
LibraryDiscoveryTest		class	Drupal\Tests\Core\Asset	core/tests/Drupal/Tests/Core/Asset/LibraryDiscoveryTest.php	@coversDefaultClass \Drupal\Core\Asset\LibraryDiscovery[[api-linebreak]] @group Asset
Link		class	Drupal\Core\Render\Element	core/lib/Drupal/Core/Render/Element/Link.php	Provides a link render element.	2	3
Link		class	Drupal\Core	core/lib/Drupal/Core/Link.php	Defines an object that holds information about a link.		98
Link		final class	Drupal\jsonapi\JsonApiResource	core/modules/jsonapi/src/JsonApiResource/Link.php	Represents an RFC8288 based link.		7
LinkAccessConstraint		class	Drupal\link\Plugin\Validation\Constraint	core/modules/link/src/Plugin/Validation/Constraint/LinkAccessConstraint.php	Defines an access validation constraint for links.		1
LinkAccessConstraintValidator		class	Drupal\link\Plugin\Validation\Constraint	core/modules/link/src/Plugin/Validation/Constraint/LinkAccessConstraintValidator.php	Validates the LinkAccess constraint.		1

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