Classes, traits, and interfaces - 9.5.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 1523

Name	Deprecated	Object type	Namespace	File name	Summary	Direct uses	Use statements	Strings
RoutingFixtures		class	Drupal\Tests\Core\Routing	core/tests/Drupal/Tests/Core/Routing/RoutingFixtures.php	Utility methods to generate sample data, database configuration, etc.		2
Row		class	Drupal\migrate	core/modules/migrate/src/Row.php	Stores a row.		228
RowCountException		class	Drupal\Core\Database	core/lib/Drupal/Core/Database/RowCountException.php	Exception thrown if a SELECT query trying to execute rowCount() on result.		3
RowCountExceptionTest		class	Drupal\Tests\Core\Database	core/tests/Drupal/Tests/Core/Database/RowCountExceptionTest.php	@coversDefaultClass \Drupal\Core\Database\RowCountException[[api-linebreak]]
RowEntityRenderersTest		class	Drupal\Tests\views\Kernel\Entity	core/modules/views/tests/src/Kernel/Entity/RowEntityRenderersTest.php	Tests the entity row renderers.
RowEntityTest		class	Drupal\Tests\views\Kernel\Plugin	core/modules/views/tests/src/Kernel/Plugin/RowEntityTest.php	Tests the generic entity row plugin.
RowPluginBase		abstract class	Drupal\views\Plugin\views\row	core/modules/views/src/Plugin/views/row/RowPluginBase.php	Base class for Views row plugins.	9	5
RowPluginTest		class	Drupal\Tests\node\Functional\Views	core/modules/node/tests/src/Functional/Views/RowPluginTest.php	Tests the node row plugin.
RowRenderCacheTest		class	Drupal\Tests\views\Kernel\Plugin	core/modules/views/tests/src/Kernel/Plugin/RowRenderCacheTest.php	Tests row render caching.
RowRssTest		class	Drupal\Tests\comment\Functional\Views	core/modules/comment/tests/src/Functional/Views/RowRssTest.php	Tests the comment rss row plugin.
RowTest		class	Drupal\Tests\migrate\Unit	core/modules/migrate/tests/src/Unit/RowTest.php	@coversDefaultClass \Drupal\migrate\Row[[api-linebreak]] @group migrate
RowTest		class	Drupal\views_test_data\Plugin\views\row	core/modules/views/tests/modules/views_test_data/src/Plugin/views/row/RowTest.php	Provides a general test row plugin.		1
RowUITest		class	Drupal\Tests\views_ui\Functional	core/modules/views_ui/tests/src/Functional/RowUITest.php	Tests the UI of row plugins.
Rss		class	Drupal\comment\Plugin\views\row	core/modules/comment/src/Plugin/views/row/Rss.php	Plugin which formats the comments as RSS items.
Rss		class	Drupal\aggregator\Plugin\views\row	core/modules/aggregator/src/Plugin/views/row/Rss.php	Defines a row plugin which loads an aggregator item and renders as RSS.
Rss		class	Drupal\views\Plugin\views\style	core/modules/views/src/Plugin/views/style/Rss.php	Default style plugin to render an RSS feed.
Rss		class	Drupal\node\Plugin\views\row	core/modules/node/src/Plugin/views/row/Rss.php	Performs a node_view on the resulting object and formats it as an RSS item.
RSSEnclosureFormatter		class	Drupal\file\Plugin\Field\FieldFormatter	core/modules/file/src/Plugin/Field/FieldFormatter/RSSEnclosureFormatter.php	Plugin implementation of the 'file_rss_enclosure' formatter.
RssFeedsForm		class	Drupal\system\Form	core/modules/system/src/Form/RssFeedsForm.php	Configure RSS settings for this site.			1
RssFields		class	Drupal\views\Plugin\views\row	core/modules/views/src/Plugin/views/row/RssFields.php	Renders an RSS item based on fields.
RssFieldsTest		class	Drupal\Tests\views\Kernel\Plugin	core/modules/views/tests/src/Kernel/Plugin/RssFieldsTest.php	Tests \Drupal\views\Plugin\views\row\RssFields.
RssPluginBase		abstract class	Drupal\views\Plugin\views\row	core/modules/views/src/Plugin/views/row/RssPluginBase.php	Base class for Views RSS row plugins.	3	3
RssResponseRelativeUrlFilter		class	Drupal\Core\EventSubscriber	core/lib/Drupal/Core/EventSubscriber/RssResponseRelativeUrlFilter.php	Subscribes to filter RSS responses, to make relative URIs absolute.		1	2
RssResponseRelativeUrlFilterTest		class	Drupal\Tests\Core\EventSubscriber	core/tests/Drupal/Tests/Core/EventSubscriber/RssResponseRelativeUrlFilterTest.php	@coversDefaultClass \Drupal\Core\EventSubscriber\RssResponseRelativeUrlFilter[[api-linebreak]] @group event_subscriber
RssTest		class	Drupal\Tests\taxonomy\Functional	core/modules/taxonomy/tests/src/Functional/RssTest.php	Tests the taxonomy RSS display.
RssViewIntegrationTest		class	Drupal\Tests\rdf\Functional	core/modules/rdf/tests/src/Functional/RssViewIntegrationTest.php	@group rdf @group legacy
RunnerVersion		final class	Drupal\TestTools\PhpUnitCompatibility	core/tests/Drupal/TestTools/PhpUnitCompatibility/RunnerVersion.php	Helper class to determine information about running PHPUnit version.		4
SafeMarkupTestMarkup		class	Drupal\KernelTests\Core\Theme	core/tests/Drupal/KernelTests/Core/Theme/TwigMarkupInterfaceTest.php	Implements MarkupInterface without implementing \Countable.
SampleEntityGeneratorInterface		interface	Drupal\layout_builder\Entity	core/modules/layout_builder/src/Entity/SampleEntityGeneratorInterface.php	Generates a sample entity.	1	2
SaveAction		class	Drupal\Core\Action\Plugin\Action	core/lib/Drupal/Core/Action/Plugin/Action/SaveAction.php	Provides an action that can save any entity.
SaveActionTest		class	Drupal\KernelTests\Core\Action	core/tests/Drupal/KernelTests/Core/Action/SaveActionTest.php	@group Action
SaveEntity		class	Drupal\action_test\Plugin\Action	core/modules/system/tests/modules/action_test/src/Plugin/Action/SaveEntity.php	Provides an operation to save user entities.
SaveTest		class	Drupal\Tests\file\Kernel	core/modules/file/tests/src/Kernel/SaveTest.php	File saving tests.
SaveUploadFormTest		class	Drupal\Tests\file\Functional	core/modules/file/tests/src/Functional/SaveUploadFormTest.php	Tests the _file_save_upload_from_form() function.
SaveUploadTest		class	Drupal\Tests\file\Functional	core/modules/file/tests/src/Functional/SaveUploadTest.php	Tests the file_save_upload() function.	1
ScaffoldFileCollection		class	Drupal\Composer\Plugin\Scaffold\Operations	composer/Plugin/Scaffold/Operations/ScaffoldFileCollection.php	Collection of scaffold files.		2
ScaffoldFileCollectionTest		class	Drupal\Tests\Composer\Plugin\Scaffold\Integration	core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Integration/ScaffoldFileCollectionTest.php	@coversDefaultClass \Drupal\Composer\Plugin\Scaffold\Operations\ScaffoldFileCollection[[api-linebreak]]
ScaffoldFileInfo		class	Drupal\Composer\Plugin\Scaffold	composer/Plugin/Scaffold/ScaffoldFileInfo.php	Data object that keeps track of one scaffold file.		1
ScaffoldFilePath		class	Drupal\Composer\Plugin\Scaffold	composer/Plugin/Scaffold/ScaffoldFilePath.php	Manage the path to a file to scaffold.		9
ScaffoldOptions		class	Drupal\Composer\Plugin\Scaffold	composer/Plugin/Scaffold/ScaffoldOptions.php	Per-project options from the 'extras' section of the composer.json file.		8
ScaffoldResult		class	Drupal\Composer\Plugin\Scaffold\Operations	composer/Plugin/Scaffold/Operations/ScaffoldResult.php	Record the result of a scaffold operation.		1
ScaffoldTest		class	Drupal\Tests\Composer\Plugin\Scaffold\Functional	core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Functional/ScaffoldTest.php	Tests Composer Scaffold.
ScaffoldTestResult		class	Drupal\Tests\Composer\Plugin\Scaffold	core/tests/Drupal/Tests/Composer/Plugin/Scaffold/ScaffoldTestResult.php	Holds result of a scaffold test.		1
ScaffoldUpgradeTest		class	Drupal\Tests\Composer\Plugin\Scaffold\Functional	core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Functional/ScaffoldUpgradeTest.php	Tests Upgrading the Composer Scaffold plugin.
Scale		class	Drupal\system\Plugin\ImageToolkit\Operation\gd	core/modules/system/src/Plugin/ImageToolkit/Operation/gd/Scale.php	Defines GD2 Scale operation.
ScaleAndCrop		class	Drupal\system\Plugin\ImageToolkit\Operation\gd	core/modules/system/src/Plugin/ImageToolkit/Operation/gd/ScaleAndCrop.php	Defines GD2 Scale and crop operation.
ScaleAndCropImageEffect		class	Drupal\image\Plugin\ImageEffect	core/modules/image/src/Plugin/ImageEffect/ScaleAndCropImageEffect.php	Scales and crops an image resource.
ScaleImageEffect		class	Drupal\image\Plugin\ImageEffect	core/modules/image/src/Plugin/ImageEffect/ScaleImageEffect.php	Scales an image resource.
ScanDirectoryTest		class	Drupal\KernelTests\Core\File	core/tests/Drupal/KernelTests/Core/File/ScanDirectoryTest.php	Tests \Drupal\Core\File\FileSystem::scanDirectory.	1
Schema		class	Drupal\Tests\Core\Database\Stub\Driver	core/tests/Drupal/Tests/Core/Database/Stub/Driver/Schema.php	A very minimal class for testing purposes.

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