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
DateTimeRangeConstantsInterface interface Drupal\datetime_range core/modules/datetime_range/src/DateTimeRangeConstantsInterface.php Declares constants used in the datetime range module. 3
DateTimeRangeTrait trait Drupal\datetime_range core/modules/datetime_range/src/DateTimeRangeTrait.php Provides friendly methods for datetime range. 3
DateTimeSchemaTest class Drupal\Tests\datetime\Kernel\Views core/modules/datetime/tests/src/Kernel/Views/DateTimeSchemaTest.php Tests the Drupal\datetime\Plugin\views schemas.
DateTimeTest class Drupal\Tests\system\Functional\System core/modules/system/tests/src/Functional/System/DateTimeTest.php Test date formatting and time zone handling, including daylight saving time.
DateTimeTimeAgoFormatter class Drupal\datetime\Plugin\Field\FieldFormatter core/modules/datetime/src/Plugin/Field/FieldFormatter/DateTimeTimeAgoFormatter.php Plugin implementation of the 'Time ago' formatter for 'datetime' fields.
DateTimeTimeAgoFormatterTest class Drupal\Tests\datetime\Functional core/modules/datetime/tests/src/Functional/DateTimeTimeAgoFormatterTest.php Tests the functionality of DateTimeTimeAgoFormatter field formatter.
DateTimeWidgetBase class Drupal\datetime\Plugin\Field\FieldWidget core/modules/datetime/src/Plugin/Field/FieldWidget/DateTimeWidgetBase.php Base class for the 'datetime_*' widgets. 3 1
DateTimeWidgetTest class Drupal\Tests\datetime\Functional core/modules/datetime/tests/src/Functional/DateTimeWidgetTest.php Tests Datetime widgets functionality.
DayDate class Drupal\datetime\Plugin\views\argument core/modules/datetime/src/Plugin/views/argument/DayDate.php Argument handler for a day.
DayDate class Drupal\views\Plugin\views\argument core/modules/views/src/Plugin/views/argument/DayDate.php Argument handler for a day (DD)
DbCommandBase class Drupal\Core\Command core/lib/Drupal/Core/Command/DbCommandBase.php Base command that abstracts handling of database connection arguments. 3 1
DbCommandBaseTest class Drupal\Tests\system\Kernel\Scripts core/modules/system/tests/src/Kernel/Scripts/DbCommandBaseTest.php Test that the DbToolsApplication works correctly.
DbCommandBaseTester class Drupal\Tests\system\Kernel\Scripts core/modules/system/tests/src/Kernel/Scripts/DbCommandBaseTest.php Concrete command implementation for testing base features.
DbDumpApplication class Drupal\Core\Command core/lib/Drupal/Core/Command/DbDumpApplication.php Provides a command to dump a database generation script. 2
DbDumpCommand class Drupal\Core\Command core/lib/Drupal/Core/Command/DbDumpCommand.php Provides a command to dump the current database to a script. 1
DbDumpCommandTest class Drupal\Tests\mysql\Kernel\mysql\Console core/modules/mysql/tests/src/Kernel/mysql/Console/DbDumpCommandTest.php Test that the DbDumpCommand works correctly.
DbDumpTest class Drupal\Tests\mysql\Kernel\mysql core/modules/mysql/tests/src/Kernel/mysql/DbDumpTest.php Tests for the database dump commands.
DbImportCommand class Drupal\Core\Command core/lib/Drupal/Core/Command/DbImportCommand.php Provides a command to import the current database from a script. 1
DbImportCommandTest class Drupal\Tests\system\Kernel\Scripts core/modules/system/tests/src/Kernel/Scripts/DbImportCommandTest.php Test that the DbImportCommand works correctly.
DbLog class Drupal\dblog\Logger core/modules/dblog/src/Logger/DbLog.php Logs events in the watchdog database table. 2
DblogClearLogConfirmForm class Drupal\dblog\Form core/modules/dblog/src/Form/DblogClearLogConfirmForm.php Provides a confirmation form before clearing out the logs. 1
DbLogController class Drupal\dblog\Controller core/modules/dblog/src/Controller/DbLogController.php Returns responses for dblog routes. 3
DbLogControllerTest class Drupal\Tests\dblog\Kernel core/modules/dblog/tests/src/Kernel/DbLogControllerTest.php Tests for the DbLogController class.
DblogFilterForm class Drupal\dblog\Form core/modules/dblog/src/Form/DblogFilterForm.php Provides the database logging filter form.
DbLogFormInjectionTest class Drupal\Tests\dblog\Kernel core/modules/dblog/tests/src/Kernel/DbLogFormInjectionTest.php Tests serializing a form with an injected dblog logger instance.
DblogMessage class Drupal\dblog\Plugin\views\field core/modules/dblog/src/Plugin/views/field/DblogMessage.php Provides a field handler that renders a log event with replaced variables.
DblogOperations class Drupal\dblog\Plugin\views\field core/modules/dblog/src/Plugin/views/field/DblogOperations.php Provides a field handler that renders operation link markup.
DbLogResource class Drupal\dblog\Plugin\rest\resource core/modules/dblog/src/Plugin/rest/resource/DbLogResource.php Provides a resource for database watchdog log entries.
DbLogResourceTest class Drupal\Tests\dblog\Functional core/modules/dblog/tests/src/Functional/DbLogResourceTest.php Tests the watchdog database log resource.
DbLogTest class Drupal\Tests\dblog\Kernel core/modules/dblog/tests/src/Kernel/DbLogTest.php Generate events and verify dblog entries.
DbLogTest class Drupal\Tests\dblog\Functional core/modules/dblog/tests/src/Functional/DbLogTest.php Verifies log entries and user access based on permissions. 1
DblogTypes class Drupal\dblog\Plugin\views\filter core/modules/dblog/src/Plugin/views/filter/DblogTypes.php Exposes log types to views module.
DbLogViewsTest class Drupal\Tests\dblog\Functional core/modules/dblog/tests/src/Functional/DbLogViewsTest.php Verifies user access to log reports based on permissions.
DbToolsApplication class Drupal\Core\Command core/lib/Drupal/Core/Command/DbToolsApplication.php Provides a command to import a database generation script. 2
DbToolsApplicationTest class Drupal\Tests\system\Kernel\Scripts core/modules/system/tests/src/Kernel/Scripts/DbToolsApplicationTest.php Test that the DbToolsApplication works correctly.
DbUpdateAccessCheck class Drupal\system\Access core/modules/system/src/Access/DbUpdateAccessCheck.php Access check for database update routes. 2
DbUpdateController class Drupal\system\Controller core/modules/system/src/Controller/DbUpdateController.php Controller routines for database update routes.
DbUpdateNegotiator class Drupal\system\Theme core/modules/system/src/Theme/DbUpdateNegotiator.php Sets the active theme for the database update pages. 2
DCOM58Test class Drupal\Tests\Component\Annotation\Doctrine\Ticket core/tests/Drupal/Tests/Component/Annotation/Doctrine/Ticket/DCOM58Test.php This class is a near-copy of \Doctrine\Tests\Common\Annotations\Ticket\DCOM58Test, which is part of the Doctrine project: <http://www.doctrine-project.org>. It was copied from version 1.2.7.
DebugExtension final class Drupal\Core\Template core/lib/Drupal/Core/Template/DebugExtension.php A class providing Drupal Twig Debug extension. 2
DecimalData class Drupal\Core\TypedData\Plugin\DataType core/lib/Drupal/Core/TypedData/Plugin/DataType/DecimalData.php The decimal data type.
DecimalFormatter class Drupal\Core\Field\Plugin\Field\FieldFormatter core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/DecimalFormatter.php Plugin implementation of the 'number_decimal' formatter.
DecimalInterface interface Drupal\Core\TypedData\Type core/lib/Drupal/Core/TypedData/Type/DecimalInterface.php Interface for decimal numbers. 1 3
DecimalItem class Drupal\Core\Field\Plugin\Field\FieldType core/lib/Drupal/Core/Field/Plugin/Field/FieldType/DecimalItem.php Defines the 'decimal' field type.
DecoratedServiceTest class Drupal\Tests\system\Kernel core/modules/system/tests/src/Kernel/DecoratedServiceTest.php Test handling of decorated services in DependencySerializationTraitPass.
DefaultAccessCheck class Drupal\Core\Access core/lib/Drupal/Core/Access/DefaultAccessCheck.php Allows access to routes to be controlled by an '_access' boolean parameter. 2 2
DefaultAccessCheckTest class Drupal\Tests\Core\Access core/tests/Drupal/Tests/Core/Access/DefaultAccessCheckTest.php @coversDefaultClass \Drupal\Core\Access\DefaultAccessCheck[[api-linebreak]] @group Access
DefaultConfigTest class Drupal\Tests\Core\Extension core/tests/Drupal/Tests/Core/Extension/DefaultConfigTest.php Tests default configuration of the Extension system.
DefaultConfigTest class Drupal\KernelTests\Config core/tests/Drupal/KernelTests/Config/DefaultConfigTest.php Tests that the installed config matches the default config.
DefaultContentFilesAccessTest class Drupal\Tests\demo_umami_content\Functional core/profiles/demo_umami/modules/demo_umami_content/tests/src/Functional/DefaultContentFilesAccessTest.php Tests that files provided by demo_umami_content are not accessible.

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