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
TranslatableMarkup		class	Drupal\Core\StringTranslation	core/lib/Drupal/Core/StringTranslation/TranslatableMarkup.php	Provides translatable markup class.	2	923	1
TranslatableMarkupTest		class	Drupal\Tests\Core\StringTranslation	core/tests/Drupal/Tests/Core/StringTranslation/TranslatableMarkupTest.php	Tests the TranslatableMarkup class.
TranslatableRevisionableInterface		interface	Drupal\Core\Entity	core/lib/Drupal/Core/Entity/TranslatableRevisionableInterface.php	Provides methods for an entity to support revision translation.	1
TranslatableRevisionableStorageInterface		interface	Drupal\Core\Entity	core/lib/Drupal/Core/Entity/TranslatableRevisionableStorageInterface.php	A storage that supports translatable and revisionable entity types.	1
TranslatableStorageInterface		interface	Drupal\Core\Entity	core/lib/Drupal/Core/Entity/TranslatableStorageInterface.php	A storage that supports translatable entity types.	1
TranslatableStringAdapter		final class	Drupal\package_manager	core/modules/package_manager/src/TranslatableStringAdapter.php	An adapter for interoperable string translation.		2
TranslatableStringFactory		final class	Drupal\package_manager	core/modules/package_manager/src/TranslatableStringFactory.php	Creates translatable strings that can interoperate with Composer Stager.		2
TranslatableStringTest		class	Drupal\Tests\package_manager\Kernel	core/modules/package_manager/tests/src/Kernel/TranslatableStringTest.php	Tests Translatable String.
TranslatedViewTest		class	Drupal\Tests\views_ui\Functional	core/modules/views_ui/tests/src/Functional/TranslatedViewTest.php	Tests that translated strings in views UI don't override original strings.
TranslateEditForm		class	Drupal\locale\Form	core/modules/locale/src/Form/TranslateEditForm.php	Defines a translation edit form.
TranslateFilterForm		class	Drupal\locale\Form	core/modules/locale/src/Form/TranslateFilterForm.php	Provides a filtered translation edit form.
TranslateFormBase		abstract class	Drupal\locale\Form	core/modules/locale/src/Form/TranslateFormBase.php	Defines the locale user interface translation form base.	2
Translation		class	Drupal\Core\Annotation	core/lib/Drupal/Core/Annotation/Translation.php	Defines a translatable annotation object.		1
TranslationInterface		interface	Drupal\Core\StringTranslation	core/lib/Drupal/Core/StringTranslation/TranslationInterface.php	Interface for the translation.manager translation service.	2	77
TranslationLanguageRenderer		class	Drupal\views\Entity\Render	core/modules/views/src/Entity/Render/TranslationLanguageRenderer.php	Renders entity translations in their row language.
TranslationLink		class	Drupal\content_translation\Plugin\views\field	core/modules/content_translation/src/Plugin/views/field/TranslationLink.php	Provides a translation link for an entity.
TranslationLinkTest		class	Drupal\Tests\content_translation\Functional\Views	core/modules/content_translation/tests/src/Functional/Views/TranslationLinkTest.php	Tests the content translation overview link field handler.
TranslationManager		class	Drupal\Core\StringTranslation	core/lib/Drupal/Core/StringTranslation/TranslationManager.php	Defines a chained translation implementation combining multiple translators.	1	5	2
TranslationManagerTest		class	Drupal\Tests\Core\StringTranslation	core/tests/Drupal/Tests/Core/StringTranslation/TranslationManagerTest.php	Tests Drupal\Core\StringTranslation\TranslationManager.
TranslationsStream		class	Drupal\locale\StreamWrapper	core/modules/locale/src/StreamWrapper/TranslationsStream.php	Defines a Drupal translations (translations://) stream wrapper class.		4	2
TranslationStatusForm		class	Drupal\locale\Form	core/modules/locale/src/Form/TranslationStatusForm.php	Provides a translation status form.			1
TranslationStatusInterface		interface	Drupal\Core\TypedData	core/lib/Drupal/Core/TypedData/TranslationStatusInterface.php	Defines an interface for checking the status of an entity translation.	1	3
TranslationsTest		class	Drupal\Tests\media_library\FunctionalJavascript	core/modules/media_library/tests/src/FunctionalJavascript/TranslationsTest.php	Tests media library for translatable media.
TranslationString		class	Drupal\locale	core/modules/locale/src/TranslationString.php	Defines the locale translation string object.		1
TranslationStringTest		class	Drupal\KernelTests\Core\StringTranslation	core/tests/Drupal/KernelTests/Core/StringTranslation/TranslationStringTest.php	Tests the TranslatableMarkup class.
TranslationTest		class	Drupal\Tests\Core\Annotation	core/tests/Drupal/Tests/Core/Annotation/TranslationTest.php	Tests Drupal\Core\Annotation\Translation.
TranslationTest		class	Drupal\Tests\field\Kernel	core/modules/field/tests/src/Kernel/TranslationTest.php	Tests multilingual fields logic.
TranslationWebTest		class	Drupal\Tests\field\Functional	core/modules/field/tests/src/Functional/TranslationWebTest.php	Tests multilingual fields logic that require a full environment.
TranslatorInterface		interface	Drupal\Core\StringTranslation\Translator	core/lib/Drupal/Core/StringTranslation/Translator/TranslatorInterface.php	Interface for objects capable of string translation.	3	3
TranslatorInterface		interface	Drupal\Core\Validation	core/lib/Drupal/Core/Validation/TranslatorInterface.php	Defines an interface used in validation.	1	1
TransliterationInterface		interface	Drupal\Component\Transliteration	core/lib/Drupal/Component/Transliteration/TransliterationInterface.php	Defines an interface for classes providing transliteration.	1	5
TransportInfoController		class	Drupal\mailer_transport_factory_functional_test\Controller	core/modules/mailer/tests/modules/mailer_transport_factory_functional_test/src/Controller/TransportInfoController.php	Returns responses for transport info routes.
TransportServiceFactory		class	Drupal\Core\Mailer	core/lib/Drupal/Core/Mailer/TransportServiceFactory.php	The default mailer transport service factory.		1
TransportServiceFactoryInterface		interface	Drupal\Core\Mailer	core/lib/Drupal/Core/Mailer/TransportServiceFactoryInterface.php	An interface defining mailer transport service factory implementations.	1
TransportServiceFactoryTest		class	Drupal\Tests\mailer\Functional	core/modules/mailer/tests/src/Functional/TransportServiceFactoryTest.php	Tests the transport service factory in the child site of browser tests.
TransportServiceFactoryTrait		trait	Drupal\Core\Mailer	core/lib/Drupal/Core/Mailer/TransportServiceFactoryTrait.php	A trait containing helper methods for transport service construction.
TransportTest		class	Drupal\Tests\mailer\Kernel	core/modules/mailer/tests/src/Kernel/TransportTest.php	Tests the transport factory service.
TraversableObject		class	Drupal\jsonapi_test_data_type	core/modules/jsonapi/tests/modules/jsonapi_test_data_type/src/TraversableObject.php	An object which implements \IteratorAggregate.		2
TraversableObjectNormalizer		class	Drupal\jsonapi_test_data_type\Normalizer	core/modules/jsonapi/tests/modules/jsonapi_test_data_type/src/Normalizer/TraversableObjectNormalizer.php	Normalizes TraversableObject.			2
TraversableTypedDataInterface		interface	Drupal\Core\TypedData	core/lib/Drupal/Core/TypedData/TraversableTypedDataInterface.php	An interface for typed data objects that can be traversed.	3	8
TreeConfigTargetForm		class	Drupal\form_test\Form	core/modules/system/tests/modules/form_test/src/Form/TreeConfigTargetForm.php	Provides a form for configuring preferences and dynamically updating select list options via AJAX.	1		1
TRexEditor		class	Drupal\editor_test\Plugin\Editor	core/modules/editor/tests/modules/editor_test/src/Plugin/Editor/TRexEditor.php	Defines a Tyrannosaurus-Rex powered text editor for testing purposes.
TriggeringElementProgrammedTest		class	Drupal\KernelTests\Core\Form	core/tests/Drupal/KernelTests/Core/Form/TriggeringElementProgrammedTest.php	Tests detection of triggering_element for programmed form submissions.
TriggeringElementTest		class	Drupal\Tests\system\FunctionalJavascript\Form	core/modules/system/tests/src/FunctionalJavascript/Form/TriggeringElementTest.php	Tests that FAPI correctly determines the triggering element.
TriggerPreviewCommand		class	Drupal\views\Ajax	core/modules/views/src/Ajax/TriggerPreviewCommand.php	Provides an AJAX command for triggering the views live preview.		1
Truncate		class	Drupal\pgsql\Driver\Database\pgsql	core/modules/pgsql/src/Driver/Database/pgsql/Truncate.php	PostgreSQL implementation of \Drupal\Core\Database\Query\Truncate.
Truncate		class	Drupal\core_fake\Driver\Database\CoreFakeWithAllCustomClasses	core/tests/fixtures/database_drivers/module/core_fake/src/Driver/Database/CoreFakeWithAllCustomClasses/Truncate.php	CoreFakeWithAllCustomClasses implementation of \Drupal\Core\Database\Truncate.
Truncate		class	Drupal\Core\Database\Query	core/lib/Drupal/Core/Database/Query/Truncate.php	General class for an abstracted TRUNCATE operation.	3	5
Truncate		class	Drupal\sqlite\Driver\Database\sqlite	core/modules/sqlite/src/Driver/Database/sqlite/Truncate.php	SQLite implementation of \Drupal\Core\Database\Query\Truncate.
TrustedCallback		class	Drupal\Core\Security\Attribute	core/lib/Drupal/Core/Security/Attribute/TrustedCallback.php	Attribute to tell that a method is a trusted callback.		15

Other projects

Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.