Classes, traits, and interfaces - 10.3.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
FilterProcessResult class Drupal\filter core/modules/filter/src/FilterProcessResult.php Used to return values from a text filter plugin's processing method. 25
FilterSecurityTest class Drupal\Tests\filter\Functional core/modules/filter/tests/src/Functional/FilterSecurityTest.php Tests HTML filtering with missing or skipped filters or text formats.
FilterSettings class Drupal\filter\Plugin\migrate\process core/modules/filter/src/Plugin/migrate/process/FilterSettings.php Adds the default allowed attributes to filter_html's allowed_html setting. 1
FilterSettingsTest class Drupal\Tests\filter\Kernel\Plugin\migrate\process core/modules/filter/tests/src/Kernel/Plugin/migrate/process/FilterSettingsTest.php Unit tests of the filter_settings plugin.
FilterSparkles class Drupal\filter_test_plugin\Plugin\Filter core/modules/filter/tests/filter_test_plugin/src/Plugin/Filter/FilterSparkles.php Provides a filter to limit allowed HTML tags.
FilterStringTest class Drupal\Tests\views\Kernel\Handler core/modules/views/tests/src/Kernel/Handler/FilterStringTest.php Tests the core Drupal\views\Plugin\views\filter\StringFilter handler.
FilterTest class Drupal\Tests\views\FunctionalJavascript\Plugin\views\Handler core/modules/views/tests/src/FunctionalJavascript/Plugin/views/Handler/FilterTest.php Tests the add filter handler UI.
FilterTest class Drupal\Tests\views\Functional\Plugin core/modules/views/tests/src/Functional/Plugin/FilterTest.php Tests general filter plugin functionality.
FilterTest class Drupal\views_test_data\Plugin\views\filter core/modules/views/tests/modules/views_test_data/src/Plugin/views/filter/FilterTest.php #[ViewsFilter("test_filter")] 2
FilterTest class Drupal\Tests\jsonapi\Kernel\Query core/modules/jsonapi/tests/src/Kernel/Query/FilterTest.php @coversDefaultClass \Drupal\jsonapi\Query\Filter[[api-linebreak]] @group jsonapi @group jsonapi_query @group #slow
FilterTestAssets class Drupal\filter_test\Plugin\Filter core/modules/filter/tests/filter_test/src/Plugin/Filter/FilterTestAssets.php Provides a test filter to attach assets.
FilterTestCacheContexts class Drupal\filter_test\Plugin\Filter core/modules/filter/tests/filter_test/src/Plugin/Filter/FilterTestCacheContexts.php Provides a test filter to associate cache contexts.
FilterTestCacheMerge class Drupal\filter_test\Plugin\Filter core/modules/filter/tests/filter_test/src/Plugin/Filter/FilterTestCacheMerge.php Provides a test filter to merge with CacheableMetadata.
FilterTestCacheTags class Drupal\filter_test\Plugin\Filter core/modules/filter/tests/filter_test/src/Plugin/Filter/FilterTestCacheTags.php Provides a test filter to associate cache tags.
FilterTestFormatForm class Drupal\filter_test\Form core/modules/filter/tests/filter_test/src/Form/FilterTestFormatForm.php Shows a test form for testing the 'text_format' form element. 1
FilterTestPlaceholders class Drupal\filter_test\Plugin\Filter core/modules/filter/tests/filter_test/src/Plugin/Filter/FilterTestPlaceholders.php Provides a test filter to use placeholders.
FilterTestReplace class Drupal\filter_test\Plugin\Filter core/modules/filter/tests/filter_test/src/Plugin/Filter/FilterTestReplace.php Provides a test filter to replace all content.
FilterTestRestrictTagsAndAttributes class Drupal\filter_test\Plugin\Filter core/modules/filter/tests/filter_test/src/Plugin/Filter/FilterTestRestrictTagsAndAttributes.php Provides a test filter to restrict HTML tags and attributes.
FilterTestStatic class Drupal\filter_test_plugin\Plugin\Filter core/modules/filter/tests/filter_test_plugin/src/Plugin/Filter/FilterTestStatic.php Provides a filter that returns the same static text.
FilterUidRevisionTest class Drupal\Tests\node\Kernel\Views core/modules/node/tests/src/Kernel/Views/FilterUidRevisionTest.php Tests the node_uid_revision handler.
FilterUITest class Drupal\Tests\views_ui\Functional core/modules/views_ui/tests/src/Functional/FilterUITest.php Tests for the filters from the UI.
FilterUninstallValidator class Drupal\filter\ProxyClass core/modules/filter/src/ProxyClass/FilterUninstallValidator.php Provides a proxy class for \Drupal\filter\FilterUninstallValidator.
FilterUninstallValidator class Drupal\filter core/modules/filter/src/FilterUninstallValidator.php Prevents uninstallation of modules providing used filter plugins. 2
FilterUninstallValidatorTest class Drupal\Tests\filter\Unit core/modules/filter/tests/src/Unit/FilterUninstallValidatorTest.php @coversDefaultClass \Drupal\filter\FilterUninstallValidator[[api-linebreak]] @group filter
FilterUrl class Drupal\filter\Plugin\Filter core/modules/filter/src/Plugin/Filter/FilterUrl.php Provides a filter to convert URLs into links. 1
FinalExceptionSubscriber class Drupal\Core\EventSubscriber core/lib/Drupal/Core/EventSubscriber/FinalExceptionSubscriber.php Last-chance handler for exceptions: the final exception subscriber. 1 1 2
FinalExceptionSubscriberTest class Drupal\Tests\Core\EventSubscriber core/tests/Drupal/Tests/Core/EventSubscriber/FinalExceptionSubscriberTest.php @coversDefaultClass \Drupal\Core\EventSubscriber\FinalExceptionSubscriber[[api-linebreak]] @group EventSubscriber
FinalMissingContentSubscriber class Drupal\Core\Config\Importer core/lib/Drupal/Core/Config/Importer/FinalMissingContentSubscriber.php Final event subscriber to the missing content event. 2
FinalTestHttpMiddlewareClass final class Drupal\Tests\Core\DependencyInjection\Fixture core/tests/Drupal/Tests/Core/DependencyInjection/Fixture/FinalTestHttpMiddlewareClass.php Stub of http_middleware class that is declared final. 1
FinalTestNonTerminableHttpMiddlewareClass final class Drupal\Tests\Core\DependencyInjection\Fixture core/tests/Drupal/Tests/Core/DependencyInjection/Fixture/FinalTestNonTerminableHttpMiddlewareClass.php Stub of http_middleware class that is declared final but is not terminable. 1
Finder final class Drupal\Core\DefaultContent core/lib/Drupal/Core/DefaultContent/Finder.php Finds all default content in a directory, in dependency order. 4
FinderTest class Drupal\Tests\Core\DefaultContent core/tests/Drupal/Tests/Core/DefaultContent/FinderTest.php @covers \Drupal\Core\DefaultContent\Finder[[api-linebreak]] @group DefaultContent
FinishResponseSubscriber class Drupal\Core\EventSubscriber core/lib/Drupal/Core/EventSubscriber/FinishResponseSubscriber.php Response subscriber to handle finished responses. 1 2
FinishResponseSubscriberTest class Drupal\Tests\Core\EventSubscriber core/tests/Drupal/Tests/Core/EventSubscriber/FinishResponseSubscriberTest.php @coversDefaultClass \Drupal\Core\EventSubscriber\FinishResponseSubscriber[[api-linebreak]] @group EventSubscriber
Fixed class Drupal\views\Plugin\views\argument_default core/modules/views/src/Plugin/views/argument_default/Fixed.php The fixed argument default handler.
FixtureDeprecatedClass class Drupal\deprecation_test\Deprecation core/modules/system/tests/modules/deprecation_test/src/Deprecation/FixtureDeprecatedClass.php Fixture class for use by DrupalStandardsListenerDeprecationTest. 4 2
Fixtures class Drupal\Tests\Composer\Generator core/tests/Drupal/Tests/Composer/Generator/Fixtures.php Convenience class for creating fixtures.
Fixtures class Drupal\Tests\Composer\Plugin\Scaffold core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Fixtures.php Convenience class for creating fixtures. 8
Flatten class Drupal\migrate\Plugin\migrate\process core/modules/migrate/src/Plugin/migrate/process/Flatten.php Flattens the source value. 1
FlattenTest class Drupal\Tests\migrate\Unit\process core/modules/migrate/tests/src/Unit/process/FlattenTest.php Tests the flatten plugin.
FloatData class Drupal\Core\TypedData\Plugin\DataType core/lib/Drupal/Core/TypedData/Plugin/DataType/FloatData.php The float data type. 1 1
FloatInterface interface Drupal\Core\TypedData\Type core/lib/Drupal/Core/TypedData/Type/FloatInterface.php Interface for floating-point numbers. 1 5
FloatItem class Drupal\Core\Field\Plugin\Field\FieldType core/lib/Drupal/Core/Field/Plugin/Field/FieldType/FloatItem.php Defines the 'float' field type.
FloodInterface interface Drupal\Core\Flood core/lib/Drupal/Core/Flood/FloodInterface.php Defines an interface for flood controllers. 3 6
FloodTest class Drupal\Tests\system\Kernel\System core/modules/system/tests/src/Kernel/System/FloodTest.php Functional tests for the flood control mechanism.
FocusFirstCommand class Drupal\Core\Ajax core/lib/Drupal/Core/Ajax/FocusFirstCommand.php AJAX command for focusing an element. 4
FocusFirstCommandTest class Drupal\FunctionalJavascriptTests\Ajax core/tests/Drupal/FunctionalJavascriptTests/Ajax/FocusFirstCommandTest.php Tests setting focus via AJAX command.
FolderTest class Drupal\FunctionalTests core/tests/Drupal/FunctionalTests/FolderTest.php Tests BrowserTestBase's treatment of hook_install() during setup.
FollowUpMigrationsTest class Drupal\Tests\migrate_drupal\Kernel\d6 core/modules/migrate_drupal/tests/src/Kernel/d6/FollowUpMigrationsTest.php Tests follow-up migrations.
FollowUpMigrationsTest class Drupal\Tests\migrate_drupal\Kernel\d7 core/modules/migrate_drupal/tests/src/Kernel/d7/FollowUpMigrationsTest.php Tests follow-up migrations.

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