Classes, traits, and interfaces - 11.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 1518

Name	Deprecated	Object type	Namespace	File name	Summary	Direct uses	Use statements	Strings
ConstraintsTest		class	Drupal\KernelTests\Core\Validation	core/tests/Drupal/KernelTests/Core/Validation/ConstraintsTest.php	Tests various low level constrains provided by core.
ConstraintTest		class	Drupal\Tests\Component\Version	core/tests/Drupal/Tests/Component/Version/ConstraintTest.php	@coversDefaultClass \Drupal\Component\Version\Constraint @group Version
ConstraintValidatorFactory		class	Drupal\Core\Validation	core/lib/Drupal/Core/Validation/ConstraintValidatorFactory.php	Defines a constraint validator factory that works with container injection.		2
ConstraintViolationBuilder		class	Drupal\Core\Validation	core/lib/Drupal/Core/Validation/ConstraintViolationBuilder.php	A constraint violation builder for the basic Symfony validator.	1	1
ConstraintViolationBuilder		class	Drupal\Core\TypedData\Validation	core/lib/Drupal/Core/TypedData/Validation/ConstraintViolationBuilder.php	Defines a constraint violation builder for the Typed Data validator.
ContactCategory		class	Drupal\contact\Plugin\migrate\source	core/modules/contact/src/Plugin/migrate/source/ContactCategory.php	Drupal 6/7 contact category source from database.
ContactCategoryTest		class	Drupal\Tests\contact\Kernel\Plugin\migrate\source	core/modules/contact/tests/src/Kernel/Plugin/migrate/source/ContactCategoryTest.php	Tests D6 contact category source plugin.
ContactController		class	Drupal\contact\Controller	core/modules/contact/src/Controller/ContactController.php	Controller routines for contact routes.
ContactFieldsTest		class	Drupal\Tests\contact\Kernel\Views	core/modules/contact/tests/src/Kernel/Views/ContactFieldsTest.php	Tests that no storage is created for the contact_message entity.
ContactForm		class	Drupal\contact\Entity	core/modules/contact/src/Entity/ContactForm.php	Defines the contact form entity.		17
ContactFormAccessControlHandler		class	Drupal\contact	core/modules/contact/src/ContactFormAccessControlHandler.php	Defines the access control handler for the contact form entity type.		1
ContactFormEditForm		class	Drupal\contact	core/modules/contact/src/ContactFormEditForm.php	Base form for contact form edit forms.		1
ContactFormInterface		interface	Drupal\contact	core/modules/contact/src/ContactFormInterface.php	Provides an interface defining a contact form entity.	1	5
ContactFormJsonAnonTest		class	Drupal\Tests\contact\Functional\Rest	core/modules/contact/tests/src/Functional/Rest/ContactFormJsonAnonTest.php	@group rest
ContactFormJsonBasicAuthTest		class	Drupal\Tests\contact\Functional\Rest	core/modules/contact/tests/src/Functional/Rest/ContactFormJsonBasicAuthTest.php	@group rest
ContactFormJsonCookieTest		class	Drupal\Tests\contact\Functional\Rest	core/modules/contact/tests/src/Functional/Rest/ContactFormJsonCookieTest.php	@group rest
ContactFormListBuilder		class	Drupal\contact	core/modules/contact/src/ContactFormListBuilder.php	Defines a class to build a listing of contact form entities.		1
ContactFormResourceTestBase		abstract class	Drupal\Tests\contact\Functional\Rest	core/modules/contact/tests/src/Functional/Rest/ContactFormResourceTestBase.php		6
ContactFormTest		class	Drupal\Tests\jsonapi\Functional	core/modules/jsonapi/tests/src/Functional/ContactFormTest.php	JSON:API integration test for the "ContactForm" config entity type.
ContactFormValidationTest		class	Drupal\Tests\contact\Kernel	core/modules/contact/tests/src/Kernel/ContactFormValidationTest.php	Tests validation of contact_form entities.
ContactFormXmlAnonTest		class	Drupal\Tests\contact\Functional\Rest	core/modules/contact/tests/src/Functional/Rest/ContactFormXmlAnonTest.php	@group rest
ContactFormXmlBasicAuthTest		class	Drupal\Tests\contact\Functional\Rest	core/modules/contact/tests/src/Functional/Rest/ContactFormXmlBasicAuthTest.php	@group rest
ContactFormXmlCookieTest		class	Drupal\Tests\contact\Functional\Rest	core/modules/contact/tests/src/Functional/Rest/ContactFormXmlCookieTest.php	@group rest
ContactHooks		class	Drupal\contact\Hook	core/modules/contact/src/Hook/ContactHooks.php	Hook implementations for contact.		1
ContactLanguageTest		class	Drupal\Tests\contact\Functional	core/modules/contact/tests/src/Functional/ContactLanguageTest.php	Tests contact messages with language module.
ContactLink		class	Drupal\contact\Plugin\views\field	core/modules/contact/src/Plugin/views/field/ContactLink.php	Defines a field that links to the user contact page, if access is permitted.		1
ContactLinkTest		class	Drupal\Tests\contact\Unit	core/modules/contact/tests/src/Unit/ContactLinkTest.php	@coversDefaultClass \Drupal\contact\Plugin\views\field\ContactLink @group contact
ContactLinkTest		class	Drupal\Tests\contact\Functional\Views	core/modules/contact/tests/src/Functional/Views/ContactLinkTest.php	Tests the contact link field.
ContactMessageAccessControlHandler		class	Drupal\contact	core/modules/contact/src/ContactMessageAccessControlHandler.php	Defines the access control handler for the message form entity type.		1
ContactMessageResource		class	Drupal\contact\Plugin\rest\resource	core/modules/contact/src/Plugin/rest/resource/ContactMessageResource.php	Customizes the entity REST Resource plugin for Contact's Message entities.		1
ContactPageAccess		class	Drupal\contact\Access	core/modules/contact/src/Access/ContactPageAccess.php	Access check for contact_personal_page route.			2
ContactPersonalTest		class	Drupal\Tests\contact\Functional	core/modules/contact/tests/src/Functional/ContactPersonalTest.php	Tests personal contact form functionality.
ContactSettings		class	Drupal\contact\Plugin\migrate\source	core/modules/contact/src/Plugin/migrate/source/ContactSettings.php	Drupal 6/7 contact settings source from database.
ContactSettingsTest		class	Drupal\Tests\contact\Kernel\Plugin\migrate\source\d6	core/modules/contact/tests/src/Kernel/Plugin/migrate/source/d6/ContactSettingsTest.php	Tests D6 contact settings source plugin.
ContactSitewideTest		class	Drupal\Tests\contact\Functional	core/modules/contact/tests/src/Functional/ContactSitewideTest.php	Tests site-wide contact form functionality.	1
ContactStorageTest		class	Drupal\Tests\contact\Functional	core/modules/contact/tests/src/Functional/ContactStorageTest.php	Tests storing contact messages.
ContactStorageTestHooks		class	Drupal\contact_storage_test\Hook	core/modules/contact/tests/modules/contact_storage_test/src/Hook/ContactStorageTestHooks.php	Hook implementations for contact_storage_test.
ContactTest		class	Drupal\Tests\contact\Unit	core/modules/contact/tests/src/Unit/ContactTest.php	@group contact
ContactViewsHooks		class	Drupal\contact\Hook	core/modules/contact/src/Hook/ContactViewsHooks.php	Hook implementations for contact.
Container		class	Drupal\Component\DependencyInjection	core/lib/Drupal/Component/DependencyInjection/Container.php	Provides a container optimized for Drupal's needs.	2	1
Container		class	Drupal\Core\DependencyInjection	core/lib/Drupal/Core/DependencyInjection/Container.php	Extends the container to prevent serialization.	2	17
Container		class	Drupal\Core\Render\Element	core/lib/Drupal/Core/Render/Element/Container.php	Provides a render element that wraps child elements in a container.	1
ContainerAwareEventDispatcher		class	Drupal\Component\EventDispatcher	core/lib/Drupal/Component/EventDispatcher/ContainerAwareEventDispatcher.php	A performance optimized container aware event dispatcher.		1
ContainerAwareEventDispatcherTest		class	Drupal\Tests\Component\EventDispatcher	core/tests/Drupal/Tests/Component/EventDispatcher/ContainerAwareEventDispatcherTest.php	Unit tests for the ContainerAwareEventDispatcher.
ContainerBuilder		class	Drupal\Core\DependencyInjection	core/lib/Drupal/Core/DependencyInjection/ContainerBuilder.php	Drupal's dependency injection container builder.		174
ContainerBuilderTest		class	Drupal\Tests\Core\DependencyInjection	core/tests/Drupal/Tests/Core/DependencyInjection/ContainerBuilderTest.php	@coversDefaultClass \Drupal\Core\DependencyInjection\ContainerBuilder @group DependencyInjection
ContainerDerivativeDiscoveryDecorator		class	Drupal\Core\Plugin\Discovery	core/lib/Drupal/Core/Plugin/Discovery/ContainerDerivativeDiscoveryDecorator.php	Injects dependencies into derivers if they use ContainerDeriverInterface.		14
ContainerDerivativeDiscoveryDecoratorTest		class	Drupal\Tests\Core\Plugin\Discovery	core/tests/Drupal/Tests/Core/Plugin/Discovery/ContainerDerivativeDiscoveryDecoratorTest.php	@coversDefaultClass \Drupal\Core\Plugin\Discovery\ContainerDerivativeDiscoveryDecorator @group Plugin
ContainerDeriverInterface		interface	Drupal\Core\Plugin\Discovery	core/lib/Drupal/Core/Plugin/Discovery/ContainerDeriverInterface.php	Creates additional plugin definitions.	46	46
ContainerFactory		class	Drupal\Core\Plugin\Factory	core/lib/Drupal/Core/Plugin/Factory/ContainerFactory.php	Plugin factory which passes a container to a create method.	1	11

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