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
TwigRegistryLoaderTest		class	Drupal\Tests\system\Functional\Theme	core/modules/system/tests/src/Functional/Theme/TwigRegistryLoaderTest.php	Tests Twig registry loader.
TwigSandboxPolicy		class	Drupal\Core\Template	core/lib/Drupal/Core/Template/TwigSandboxPolicy.php	Default sandbox policy for Twig templates.		1
TwigSandboxTest		class	Drupal\Tests\Core\Template	core/tests/Drupal/Tests/Core/Template/TwigSandboxTest.php	Tests the twig sandbox policy.
TwigSettingsTest		class	Drupal\Tests\system\Functional\Theme	core/modules/system/tests/src/Functional/Theme/TwigSettingsTest.php	Tests overriding Twig engine settings via settings.php.
TwigSimpleCheckToStringNode		final class	Drupal\Core\Template	core/lib/Drupal/Core/Template/TwigSimpleCheckToStringNode.php	Defines a twig node for simplifying CheckToStringNode.
TwigThemeEngine		class	Drupal\Core\Template	core/lib/Drupal/Core/Template/TwigThemeEngine.php	Twig theme engine.		1
TwigThemeTestController		class	Drupal\twig_theme_test	core/modules/system/tests/modules/twig_theme_test/src/TwigThemeTestController.php	Controller routines for Twig theme test routes.
TwigThemeTestHooks		class	Drupal\twig_theme_test\Hook	core/modules/system/tests/modules/twig_theme_test/src/Hook/TwigThemeTestHooks.php	Hook implementations for twig_theme_test.
TwigThemeTestUtils		class	Drupal\twig_theme_test	core/modules/system/tests/modules/twig_theme_test/src/TwigThemeTestUtils.php	Helper functions used by both test modules and test classes.		2
TwigTransTest		class	Drupal\Tests\system\Functional\Theme	core/modules/system/tests/src/Functional/Theme/TwigTransTest.php	Tests Twig "trans" tags.
TwigTransTokenParser		class	Drupal\Core\Template	core/lib/Drupal/Core/Template/TwigTransTokenParser.php	A class that defines the Twig 'trans' token parser for Drupal.
TwoColumnLayout		class	Drupal\layout_builder\Plugin\Layout	core/modules/layout_builder/src/Plugin/Layout/TwoColumnLayout.php	Configurable two column layout plugin class.			1
Type		class	Drupal\node\Plugin\views\argument	core/modules/node/src/Plugin/views/argument/Type.php	Argument handler to accept a node type.
TypedConfigInterface		interface	Drupal\Core\Config\Schema	core/lib/Drupal/Core/Config/Schema/TypedConfigInterface.php	Interface for a typed configuration object that contains multiple elements.	1	1
TypedConfigManager		class	Drupal\Core\Config	core/lib/Drupal/Core/Config/TypedConfigManager.php	Manages config schema type plugins.		2	2
TypedConfigManagerInterface		interface	Drupal\Core\Config	core/lib/Drupal/Core/Config/TypedConfigManagerInterface.php	Defines an interface for managing config schema type plugins.	1	54
TypedConfigTest		class	Drupal\KernelTests\Config	core/tests/Drupal/KernelTests/Config/TypedConfigTest.php	Tests config validation mechanism.
TypedData		abstract class	Drupal\Core\TypedData	core/lib/Drupal/Core/TypedData/TypedData.php	The abstract base class for typed data.	14	13
TypedDataAwareValidatorTrait		trait	Drupal\Core\TypedData\Validation	core/lib/Drupal/Core/TypedData/Validation/TypedDataAwareValidatorTrait.php	Defines a trait to access the typed data object of a validated value.		5
TypedDataCacheableDependencyInterface		interface	Drupal\Tests\Core\Plugin\Context	core/tests/Drupal/Tests/Core/Plugin/Context/ContextTest.php	Test interface used for mocking.
TypedDataDefinitionEntityBundleTest		class	Drupal\KernelTests\Core\TypedData	core/tests/Drupal/KernelTests/Core/TypedData/TypedDataDefinitionEntityBundleTest.php	Tests data type metadata for entity bundles.
TypedDataDefinitionTest		class	Drupal\KernelTests\Core\TypedData	core/tests/Drupal/KernelTests/Core/TypedData/TypedDataDefinitionTest.php	Tests deriving metadata of core data types.
TypedDataInterface		interface	Drupal\Core\TypedData	core/lib/Drupal/Core/TypedData/TypedDataInterface.php	Interface for typed data objects.	3	43
TypedDataInternalPropertiesHelper		class	Drupal\Core\TypedData	core/lib/Drupal/Core/TypedData/TypedDataInternalPropertiesHelper.php	Helper class for internal properties.		6
TypedDataManager		class	Drupal\Core\TypedData	core/lib/Drupal/Core/TypedData/TypedDataManager.php	Manages data type plugins.	1	7	2
TypedDataManagerInterface		interface	Drupal\Core\TypedData	core/lib/Drupal/Core/TypedData/TypedDataManagerInterface.php	Defines an interface for typed data manager.	2	32
TypedDataMetadata		class	Drupal\Core\TypedData\Validation	core/lib/Drupal/Core/TypedData/Validation/TypedDataMetadata.php	Validator metadata for typed data objects.
TypedDataNormalizer		class	Drupal\serialization\Normalizer	core/modules/serialization/src/Normalizer/TypedDataNormalizer.php	Normalizes typed data objects into strings or arrays.		1	2
TypedDataNormalizerTest		class	Drupal\Tests\serialization\Unit\Normalizer	core/modules/serialization/tests/src/Unit/Normalizer/TypedDataNormalizerTest.php	Tests Drupal\serialization\Normalizer\TypedDataNormalizer.
TypedDataStringBlock		class	Drupal\plugin_test\Plugin\plugin_test\mock_block	core/modules/system/tests/modules/plugin_test/src/Plugin/plugin_test/mock_block/TypedDataStringBlock.php	Implements a String TypedData contextual block plugin.
TypedDataTest		class	Drupal\KernelTests\Core\TypedData	core/tests/Drupal/KernelTests/Core/TypedData/TypedDataTest.php	Tests the functionality of all core data types.
TypedDataTrait		trait	Drupal\Core\TypedData	core/lib/Drupal/Core/TypedData/TypedDataTrait.php	Wrapper methods for classes that needs typed data manager object.		2
TypeResolver		class	Drupal\Core\Config\Schema	core/lib/Drupal/Core/Config/Schema/TypeResolver.php	Provides helper methods for resolving config schema types.		8
TypeResolverTest		class	Drupal\Tests\Core\Config	core/tests/Drupal/Tests/Core/Config/TypeResolverTest.php	Tests Drupal\Core\Config\Schema\TypeResolver.
Uid		class	Drupal\user\Plugin\views\argument	core/modules/user/src/Plugin/views/argument/Uid.php	Argument handler to accept a user id.	1	1
UidRevision		class	Drupal\node\Plugin\views\filter	core/modules/node/src/Plugin/views/filter/UidRevision.php	Filter handler to check for revisions a certain user has created.
UidRevision		class	Drupal\node\Plugin\views\argument	core/modules/node/src/Plugin/views/argument/UidRevision.php	Filter handler, accepts a user ID.
UidRevisionTrait		trait	Drupal\node\Plugin\views	core/modules/node/src/Plugin/views/UidRevisionTrait.php	Checks for nodes that a user posted or created a revision on.		2
UiHelperTrait		trait	Drupal\Tests	core/tests/Drupal/Tests/UiHelperTrait.php	Provides UI helper methods.
UITestBase		abstract class	Drupal\Tests\views_ui\Functional	core/modules/views_ui/tests/src/Functional/UITestBase.php	Provides a base class for testing the Views UI.	45	5
UmamiHooks		class	Drupal\umami\Hook	core/profiles/demo_umami/themes/umami/src/Hook/UmamiHooks.php	Hook implementations for umami.
UmamiMultilingualInstallTest		class	Drupal\Tests\demo_umami\Functional	core/profiles/demo_umami/tests/src/Functional/UmamiMultilingualInstallTest.php	Tests the multilingual installer installing the Umami profile.
UnapprovedComments		class	Drupal\comment\Plugin\Menu\LocalTask	core/modules/comment/src/Plugin/Menu/LocalTask/UnapprovedComments.php	Provides a local task that shows the amount of unapproved comments.			1
UnblockUser		class	Drupal\user\Plugin\Action	core/modules/user/src/Plugin/Action/UnblockUser.php	Unblocks a user.
UncacheableDependencyTrait		trait	Drupal\Core\Cache	core/lib/Drupal/Core/Cache/UncacheableDependencyTrait.php	Trait to implement CacheableDependencyInterface for uncacheable objects.		2
UncacheableFieldHandlerTrait		trait	Drupal\views\Plugin\views\field	core/modules/views/src/Plugin/views/field/UncacheableFieldHandlerTrait.php	Trait encapsulating the logic for uncacheable field handlers.		1
UncacheableTestAccessResult		class	Drupal\Tests\Core\Access	core/tests/Drupal/Tests/Core/Access/AccessResultTest.php	Stub class for testing AccessResult.
UncaughtExceptionTest		class	Drupal\FunctionalTests\Bootstrap	core/tests/Drupal/FunctionalTests/Bootstrap/UncaughtExceptionTest.php	Tests kernel panic when things are really messed up.
UnchangingCacheableDependencyTrait		trait	Drupal\Core\Cache	core/lib/Drupal/Core/Cache/UnchangingCacheableDependencyTrait.php	Trait to implement CacheableDependencyInterface for unchanging objects.		4
Undefined		class	Drupal\Core\Config\Schema	core/lib/Drupal/Core/Config/Schema/Undefined.php	Undefined configuration element.		3	1

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