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
LocaleUpdateTest		class	Drupal\Tests\locale\Kernel	core/modules/locale/tests/src/Kernel/LocaleUpdateTest.php	Tests for updating the interface translations of projects.
LocaleUpdateTest		class	Drupal\Tests\locale\Functional	core/modules/locale/tests/src/Functional/LocaleUpdateTest.php	Tests for updating the interface translations of projects.
LocalReadOnlyStream		abstract class	Drupal\Core\StreamWrapper	core/lib/Drupal/Core/StreamWrapper/LocalReadOnlyStream.php	Defines a read-only Drupal stream wrapper base class for local files.	1	1
LocalRedirectResponse		class	Drupal\Core\Routing	core/lib/Drupal/Core/Routing/LocalRedirectResponse.php	Provides a redirect response which cannot redirect to an external URL.		2
LocalStream		abstract class	Drupal\Core\StreamWrapper	core/lib/Drupal/Core/StreamWrapper/LocalStream.php	Defines a Drupal stream wrapper base class for local files.	6	3
LocalTaskDefault		class	Drupal\Core\Menu	core/lib/Drupal/Core/Menu/LocalTaskDefault.php	Default object used for LocalTaskPlugins.	6	6	3
LocalTaskDefaultTest		class	Drupal\Tests\Core\Menu	core/tests/Drupal/Tests/Core/Menu/LocalTaskDefaultTest.php	@coversDefaultClass \Drupal\Core\Menu\LocalTaskDefault @group Menu
LocalTaskIntegrationTestBase		abstract class	Drupal\Tests\Core\Menu	core/tests/Drupal/Tests/Core/Menu/LocalTaskIntegrationTestBase.php	Defines a base unit test for testing existence of local tasks.	14	14
LocalTaskInterface		interface	Drupal\Core\Menu	core/lib/Drupal/Core/Menu/LocalTaskInterface.php	Defines an interface for menu local tasks.	1	1
LocalTaskManager		class	Drupal\Core\Menu	core/lib/Drupal/Core/Menu/LocalTaskManager.php	Provides the default local task manager using YML as primary definition.		2	2
LocalTaskManagerInterface		interface	Drupal\Core\Menu	core/lib/Drupal/Core/Menu/LocalTaskManagerInterface.php	Manages discovery and instantiation of menu local task plugins.	1	1
LocalTaskManagerTest		class	Drupal\Tests\Core\Menu	core/tests/Drupal/Tests/Core/Menu/LocalTaskManagerTest.php	@coversDefaultClass \Drupal\Core\Menu\LocalTaskManager @group Menu
LocalTasksBlock		class	Drupal\Core\Menu\Plugin\Block	core/lib/Drupal/Core/Menu/Plugin/Block/LocalTasksBlock.php	Provides a "Tabs" block to display the local tasks.
LocalTasksTest		class	Drupal\Tests\system\Functional\Menu	core/modules/system/tests/src/Functional/Menu/LocalTasksTest.php	Tests local tasks derived from router and added/altered via hooks.
LocalTaskTest		class	Drupal\menu_test\Plugin\Derivative	core/modules/system/tests/modules/menu_test/src/Plugin/Derivative/LocalTaskTest.php				1
LocalTaskTestWithUnsafeTitle		class	Drupal\menu_test\Plugin\Derivative	core/modules/system/tests/modules/menu_test/src/Plugin/Derivative/LocalTaskTestWithUnsafeTitle.php	Test derivative to check local task title escaping.			1
Lock		final class	Drupal\Core\TempStore	core/lib/Drupal/Core/TempStore/Lock.php	Provides a value object representing the lock from a TempStore.		4
LockBackendAbstract		abstract class	Drupal\Core\Lock	core/lib/Drupal/Core/Lock/LockBackendAbstract.php	Non backend related common methods implementation for lock backends.	1
LockBackendAbstractTest		class	Drupal\Tests\Core\Lock	core/tests/Drupal/Tests/Core/Lock/LockBackendAbstractTest.php	@coversDefaultClass \Drupal\Tests\Core\Lock\LockBackendAbstractTest @group Lock
LockBackendInterface		interface	Drupal\Core\Lock	core/lib/Drupal/Core/Lock/LockBackendInterface.php	Lock backend interface.	4	26
LockFunctionalTest		class	Drupal\Tests\system\Functional\Lock	core/modules/system/tests/src/Functional/Lock/LockFunctionalTest.php	Confirm locking works between two separate requests.
LockTest		class	Drupal\KernelTests\Core\Lock	core/tests/Drupal/KernelTests/Core/Lock/LockTest.php	Tests the Database lock backend.
Log		class	Drupal\Core\Database	core/lib/Drupal/Core/Database/Log.php	Database query logger.
Log		class	Drupal\migrate\Plugin\migrate\process	core/modules/migrate/src/Plugin/migrate/process/Log.php	Logs values without changing them.
LoggedStatementsTrait		trait	Drupal\database_statement_monitoring_test	core/modules/system/tests/modules/database_statement_monitoring_test/src/LoggedStatementsTrait.php	Trait for Connection classes that can store logged statements.		3
LoggerChannel		class	Drupal\Core\Logger	core/lib/Drupal/Core/Logger/LoggerChannel.php	Defines a logger channel that most implementations will use.		1	5
LoggerChannelFactory		class	Drupal\Core\Logger	core/lib/Drupal/Core/Logger/LoggerChannelFactory.php	Defines a factory for logging channels.		2	2
LoggerChannelFactoryInterface		interface	Drupal\Core\Logger	core/lib/Drupal/Core/Logger/LoggerChannelFactoryInterface.php	Logger channel factory interface.	1	7
LoggerChannelFactoryTest		class	Drupal\Tests\Core\Logger	core/tests/Drupal/Tests/Core/Logger/LoggerChannelFactoryTest.php	@coversDefaultClass \Drupal\Core\Logger\LoggerChannelFactory @group Logger
LoggerChannelInterface		interface	Drupal\Core\Logger	core/lib/Drupal/Core/Logger/LoggerChannelInterface.php	Logger channel interface.	1	3
LoggerChannelTest		class	Drupal\Tests\Core\Logger	core/tests/Drupal/Tests/Core/Logger/LoggerChannelTest.php	@coversDefaultClass \Drupal\Core\Logger\LoggerChannel @group Logger
LoggerChannelTrait		trait	Drupal\Core\Logger	core/lib/Drupal/Core/Logger/LoggerChannelTrait.php	Wrapper methods for the logger factory service.		3
LoggingForm		class	Drupal\system\Form	core/modules/system/src/Form/LoggingForm.php	Configure logging settings for this site.			2
LoggingTest		class	Drupal\KernelTests\Core\Database	core/tests/Drupal/KernelTests/Core/Database/LoggingTest.php	Tests the query logging facility.
LoginLogoutMenuLink		class	Drupal\user\Plugin\Menu	core/modules/user/src/Plugin/Menu/LoginLogoutMenuLink.php	A menu link that shows "Log in" or "Log out" as appropriate.			1
LoginStatusCheck		class	Drupal\user\Access	core/modules/user/src/Access/LoginStatusCheck.php	Determines access to routes based on login status of current user.			2
LogMessageParser		class	Drupal\Core\Logger	core/lib/Drupal/Core/Logger/LogMessageParser.php	Parses log messages and their placeholders.		1	2
LogMessageParserInterface		interface	Drupal\Core\Logger	core/lib/Drupal/Core/Logger/LogMessageParserInterface.php	Defines an interface for parsing log messages and their placeholders.	1	2
LogMessageParserTest		class	Drupal\Tests\Core\Logger	core/tests/Drupal/Tests/Core/Logger/LogMessageParserTest.php	@coversDefaultClass \Drupal\Core\Logger\LogMessageParser @group Logger
LogTest		class	Drupal\Tests\migrate\Kernel\Plugin	core/modules/migrate/tests/src/Kernel/Plugin/LogTest.php	Tests the Log process plugin.
LonelyMonkeyClass		class	Drupal\error_service_test	core/modules/system/tests/modules/error_service_test/src/LonelyMonkeyClass.php	A class with a single dependency.		1	2
LonelyMonkeyController		class	Drupal\error_service_test\Controller	core/modules/system/tests/modules/error_service_test/src/Controller/LonelyMonkeyController.php	Provides a controller which calls out to a service with missing dependencies.
MachineName		class	Drupal\migrate\Plugin\migrate\process	core/modules/migrate/src/Plugin/migrate/process/MachineName.php	Creates a machine name.		1
MachineName		class	Drupal\Core\Render\Element	core/lib/Drupal/Core/Render/Element/MachineName.php	Provides a machine name render element.		1
MachineName		class	Drupal\views\Plugin\views\field	core/modules/views/src/Plugin/views/field/MachineName.php	Field handler which allows to show machine name content as human name.
MachineNameController		class	Drupal\system	core/modules/system/src/MachineNameController.php	Controller routines for machine name transliteration routes.		1
MachineNameControllerTest		class	Drupal\Tests\system\Unit\Transliteration	core/modules/system/tests/src/Unit/Transliteration/MachineNameControllerTest.php	Tests that the machine name controller can transliterate strings as expected.
MachineNameTest		class	Drupal\Tests\migrate\Unit\process	core/modules/migrate/tests/src/Unit/process/MachineNameTest.php	Tests the machine name process plugin.
MachineNameTest		class	Drupal\FunctionalJavascriptTests\Core	core/tests/Drupal/FunctionalJavascriptTests/Core/MachineNameTest.php	Tests for the machine name field.
MachineNameTest		class	Drupal\Tests\Core\Render\Element	core/tests/Drupal/Tests/Core/Render/Element/MachineNameTest.php	@coversDefaultClass \Drupal\Core\Render\Element\MachineName @group Render

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