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
MenuUiNodeTest		class	Drupal\Tests\menu_ui\Functional	core/modules/menu_ui/tests/src/Functional/MenuUiNodeTest.php	Add, edit, and delete a node with menu link.
MenuUiNodeTypeTest		class	Drupal\Tests\menu_ui\Kernel	core/modules/menu_ui/tests/src/Kernel/MenuUiNodeTypeTest.php	Tests menu settings when creating and editing content types.
MenuUiTest		class	Drupal\Tests\menu_ui\Functional	core/modules/menu_ui/tests/src/Functional/MenuUiTest.php	Tests the menu UI.
MenuUiThemeHooks		class	Drupal\menu_ui\Hook	core/modules/menu_ui/src/Hook/MenuUiThemeHooks.php	Hook implementations for menu_ui.
MenuUiTrait		trait	Drupal\Tests\menu_ui\Traits	core/modules/menu_ui/tests/src/Traits/MenuUiTrait.php	Provides common methods for Menu UI module tests.		3
MenuUiUtility		class	Drupal\menu_ui	core/modules/menu_ui/src/MenuUiUtility.php	Utility functions for menu_ui.		6
MenuUninstallTest		class	Drupal\Tests\menu_ui\Functional	core/modules/menu_ui/tests/src/Functional/MenuUninstallTest.php	Tests that uninstalling menu does not remove custom menus.
MenuValidationTest		class	Drupal\Tests\system\Kernel\Entity	core/modules/system/tests/src/Kernel/Entity/MenuValidationTest.php	Tests validation of menu entities.
MenuXmlAnonTest		class	Drupal\Tests\system\Functional\Rest	core/modules/system/tests/src/Functional/Rest/MenuXmlAnonTest.php	Tests Menu Xml Anon.
MenuXmlBasicAuthTest		class	Drupal\Tests\system\Functional\Rest	core/modules/system/tests/src/Functional/Rest/MenuXmlBasicAuthTest.php	Tests Menu Xml Basic Auth.
MenuXmlCookieTest		class	Drupal\Tests\system\Functional\Rest	core/modules/system/tests/src/Functional/Rest/MenuXmlCookieTest.php	Tests Menu Xml Cookie.
Merge		class	Drupal\Core\Database\Query	core/lib/Drupal/Core/Database/Query/Merge.php	General class for an abstracted MERGE query operation.	1	5
Merge		class	Drupal\core_fake\Driver\Database\CoreFakeWithAllCustomClasses	core/tests/fixtures/database_drivers/module/core_fake/src/Driver/Database/CoreFakeWithAllCustomClasses/Merge.php	CoreFakeWithAllCustomClasses implementation of \Drupal\Core\Database\Merge.
MergeTest		class	Drupal\KernelTests\Core\Database	core/tests/Drupal/KernelTests/Core/Database/MergeTest.php	Tests the MERGE query builder.
Message		class	Drupal\Composer\Plugin\ProjectMessage	composer/Plugin/ProjectMessage/Message.php	Determine configuration.		1
Message		class	Drupal\contact\Entity	core/modules/contact/src/Entity/Message.php	Defines the contact message entity.		3
MessageAction		class	Drupal\Core\Action\Plugin\Action	core/lib/Drupal/Core/Action/Plugin/Action/MessageAction.php	Sends a message to the current user's screen.
MessageCommand		class	Drupal\Core\Ajax	core/lib/Drupal/Core/Ajax/MessageCommand.php	AJAX command for a JavaScript Drupal.message() call.		6
MessageCommandTest		class	Drupal\FunctionalJavascriptTests\Ajax	core/tests/Drupal/FunctionalJavascriptTests/Ajax/MessageCommandTest.php	Tests adding messages via AJAX command.
MessageEntityTest		class	Drupal\Tests\contact\Kernel	core/modules/contact/tests/src/Kernel/MessageEntityTest.php	Tests the message entity class.
MessageEventTestSubscriber		class	Drupal\mailer_event_subscriber_test\EventSubscriber	core/modules/mailer/tests/modules/mailer_event_subscriber_test/src/EventSubscriber/MessageEventTestSubscriber.php	A message event test subscriber.			2
MessageForm		class	Drupal\contact	core/modules/contact/src/MessageForm.php	Form controller for contact message forms.		1
MessageForm		class	Drupal\migrate\Form	core/modules/migrate/src/Form/MessageForm.php	Migrate messages form.
MessageInterface		interface	Drupal\contact	core/modules/contact/src/MessageInterface.php	Provides an interface defining a contact message entity.	1	1
MessageJsonAnonTest		class	Drupal\Tests\contact\Functional\Rest	core/modules/contact/tests/src/Functional/Rest/MessageJsonAnonTest.php	Tests Message Json Anon.
MessageJsonBasicAuthTest		class	Drupal\Tests\contact\Functional\Rest	core/modules/contact/tests/src/Functional/Rest/MessageJsonBasicAuthTest.php	Tests Message Json Basic Auth.
MessageJsonCookieTest		class	Drupal\Tests\contact\Functional\Rest	core/modules/contact/tests/src/Functional/Rest/MessageJsonCookieTest.php	Tests Message Json Cookie.
MessagePlugin		class	Drupal\Composer\Plugin\ProjectMessage	composer/Plugin/ProjectMessage/MessagePlugin.php	A Composer plugin to display a message after creating a project.
MessageResourceTestBase		abstract class	Drupal\Tests\contact\Functional\Rest	core/modules/contact/tests/src/Functional/Rest/MessageResourceTestBase.php	Resource test base for the ContactMessage entity.	6
Messages		class	Drupal\views\Plugin\views\area	core/modules/views/src/Plugin/views/area/Messages.php	Provides an area for messages.		1
MessagesBlockPluginInterface		interface	Drupal\Core\Block	core/lib/Drupal/Core/Block/MessagesBlockPluginInterface.php	The interface for "messages" (#type => status_messages) blocks.	2	4
MessagesTest		class	Drupal\Tests\views\Unit\Plugin\area	core/modules/views/tests/src/Unit/Plugin/area/MessagesTest.php	Tests Drupal\views\Plugin\views\area\Messages.
MessageTest		class	Drupal\Tests\contact\Functional\Jsonapi	core/modules/contact/tests/src/Functional/Jsonapi/MessageTest.php	JSON:API integration test for the "Message" content entity type.
MessageTest		class	Drupal\KernelTests\Core\Theme	core/tests/Drupal/KernelTests/Core/Theme/MessageTest.php	Tests built-in message theme functions.
MessageViewBuilder		class	Drupal\contact	core/modules/contact/src/MessageViewBuilder.php	Render controller for contact messages.		1
MessageXmlAnonTest		class	Drupal\Tests\contact\Functional\Rest	core/modules/contact/tests/src/Functional/Rest/MessageXmlAnonTest.php	Tests Message Xml Anon.
MessageXmlBasicAuthTest		class	Drupal\Tests\contact\Functional\Rest	core/modules/contact/tests/src/Functional/Rest/MessageXmlBasicAuthTest.php	Tests Message Xml Basic Auth.
MessageXmlCookieTest		class	Drupal\Tests\contact\Functional\Rest	core/modules/contact/tests/src/Functional/Rest/MessageXmlCookieTest.php	Tests Message Xml Cookie.
Messenger		class	Drupal\Core\Messenger	core/lib/Drupal/Core/Messenger/Messenger.php	The messenger service.		1	2
MessengerInterface		interface	Drupal\Core\Messenger	core/lib/Drupal/Core/Messenger/MessengerInterface.php	Stores runtime messages sent out to individual users on the page.	1	70
MessengerTest		class	Drupal\KernelTests\Core\Messenger	core/tests/Drupal/KernelTests/Core/Messenger/MessengerTest.php	Tests Drupal\Core\Messenger\Messenger.
MessengerTrait		trait	Drupal\Core\Messenger	core/lib/Drupal/Core/Messenger/MessengerTrait.php	Provides a trait for the messenger service.		8
MetadataBag		class	Drupal\Core\Session	core/lib/Drupal/Core/Session/MetadataBag.php	Provides a container for application specific session metadata.		4	2
MetadataBagTest		class	Drupal\Tests\Core\Session	core/tests/Drupal/Tests/Core/Session/MetadataBagTest.php	Tests Drupal\Core\Session\MetadataBag.
MetadataBubblingUrlGenerator		class	Drupal\Core\Render	core/lib/Drupal/Core/Render/MetadataBubblingUrlGenerator.php	Decorator for the URL generator, which bubbles bubbleable URL metadata.		3	2
MetadataBubblingUrlGeneratorTest		class	Drupal\Tests\Core\Render	core/tests/Drupal/Tests/Core/Render/MetadataBubblingUrlGeneratorTest.php	Confirm that the MetadataBubblingUrlGenerator is functioning properly.
MetaEventSubscriber		class	Drupal\jsonapi_test_meta_events\EventSubscriber	core/modules/jsonapi/tests/modules/jsonapi_test_meta_events/src/EventSubscriber/MetaEventSubscriber.php	Event subscriber which tests adding metadata to ResourceObjects and relationships.			2
MetapackageUpdateTest		class	Drupal\Tests\Composer\Generator	core/tests/Drupal/Tests/Composer/Generator/MetapackageUpdateTest.php	Test to see if the metapackages are up-to-date with the root composer.lock.
MethodCallable		class	Drupal\Tests\Core\Utility	core/tests/Drupal/Tests/Core/Utility/CallableResolverTest.php	A test class with callable methods.
MethodFilter		class	Drupal\Core\Routing	core/lib/Drupal/Core/Routing/MethodFilter.php	Filters routes based on the HTTP method.		1	2

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