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
FieldEntityTest		class	Drupal\Tests\views\Functional\Entity	core/modules/views/tests/src/Functional/Entity/FieldEntityTest.php	Tests the field plugin base integration with the entity system.
FieldEntityTranslationTest		class	Drupal\Tests\views\Functional\Entity	core/modules/views/tests/src/Functional/Entity/FieldEntityTranslationTest.php	Tests the rendering of fields (base fields) and their translations.
FieldException		class	Drupal\Core\Field	core/lib/Drupal/Core/Field/FieldException.php	Base class for all exceptions thrown by the Entity Field API functions.	1	12
FieldFieldAccessTestBase		abstract class	Drupal\Tests\views\Kernel\Handler	core/modules/views/tests/src/Kernel/Handler/FieldFieldAccessTestBase.php	Provides a base class for base field access in views.	6	5
FieldFieldTest		class	Drupal\Tests\views\Kernel\Handler	core/modules/views/tests/src/Kernel/Handler/FieldFieldTest.php	Provides some integration tests for the Field handler.
FieldFile		class	Drupal\file\Plugin\migrate\process\d6	core/modules/file/src/Plugin/migrate/process/d6/FieldFile.php	#[MigrateProcess('d6_field_file')]		1
FieldFileSizeTest		class	Drupal\Tests\views\Kernel\Handler	core/modules/views/tests/src/Kernel/Handler/FieldFileSizeTest.php	Tests the core Drupal\views\Plugin\views\field\FileSize handler.
FieldFileTest		class	Drupal\Tests\file\Unit\Plugin\migrate\process\d6	core/modules/file/tests/src/Unit/Plugin/migrate/process/d6/FieldFileTest.php	@group file
FieldFilteredMarkup		final class	Drupal\Core\Field	core/lib/Drupal/Core/Field/FieldFilteredMarkup.php	Defines an object that passes safe strings through the Field system.		12
FieldFilteredMarkupTest		class	Drupal\Tests\Core\Field	core/tests/Drupal/Tests/Core/Field/FieldFilteredMarkupTest.php	@coversDefaultClass \Drupal\Core\Field\FieldFilteredMarkup[[api-linebreak]] @group Field
FieldFormatter		class	Drupal\Core\Field\Attribute	core/lib/Drupal/Core/Field/Attribute/FieldFormatter.php	Defines a FieldFormatter attribute for plugin discovery.		66
FieldFormatter		class	Drupal\Core\Field\Annotation	core/lib/Drupal/Core/Field/Annotation/FieldFormatter.php	Defines a FieldFormatter annotation object.
FieldFormatterSettingsDefaults		class	Drupal\field\Plugin\migrate\process\d6	core/modules/field/src/Plugin/migrate/process/d6/FieldFormatterSettingsDefaults.php	Set the default field settings.
FieldFormatterTest		class	Drupal\Tests\field\Kernel	core/modules/field/tests/src/Kernel/FieldFormatterTest.php	Tests for field formatters.
FieldFormButtonTest		class	Drupal\views_test_data\Plugin\views\field	core/modules/views/tests/modules/views_test_data/src/Plugin/views/field/FieldFormButtonTest.php	A handler to provide a field that is completely custom by the administrator.
Fieldgroup		class	Drupal\Core\Render\Element	core/lib/Drupal/Core/Render/Element/Fieldgroup.php	Provides a render element for a group of form elements.
FieldGroupRowsTest		class	Drupal\Tests\views\Kernel\Handler	core/modules/views/tests/src/Kernel/Handler/FieldGroupRowsTest.php	Tests the "Display all values in the same row" setting.
FieldGroupRowsWebTest		class	Drupal\Tests\views\Functional\Handler	core/modules/views/tests/src/Functional/Handler/FieldGroupRowsWebTest.php	Tests the "Display all values in the same row" setting.
FieldHandlerInterface		interface	Drupal\views\Plugin\views\field	core/modules/views/src/Plugin/views/field/FieldHandlerInterface.php	Base field handler that has no options and renders an unformatted field.	2
FieldHelpTest		class	Drupal\Tests\field\Functional	core/modules/field/tests/src/Functional/FieldHelpTest.php	Tests help display for the Field module.
FieldImportChangeTest		class	Drupal\Tests\field\Kernel	core/modules/field/tests/src/Kernel/FieldImportChangeTest.php	Update field storage and fields during config change method invocation.
FieldImportCreateTest		class	Drupal\Tests\field\Kernel	core/modules/field/tests/src/Kernel/FieldImportCreateTest.php	Create field storages and fields during config create method invocation.
FieldImportDeleteTest		class	Drupal\Tests\field\Kernel	core/modules/field/tests/src/Kernel/FieldImportDeleteTest.php	Delete field storages and fields during config delete method invocation.
FieldImportDeleteUninstallTest		class	Drupal\Tests\field\Kernel	core/modules/field/tests/src/Kernel/FieldImportDeleteUninstallTest.php	Tests field storages and fields deletion during config synchronization.
FieldImportDeleteUninstallUiTest		class	Drupal\Tests\field\Functional	core/modules/field/tests/src/Functional/FieldImportDeleteUninstallUiTest.php	Tests deleting field storage when a module in uninstalled through the UI.
FieldInputValueNormalizerTrait		trait	Drupal\Core\Field	core/lib/Drupal/Core/Field/FieldInputValueNormalizerTrait.php	A trait used to assist in the normalization of raw input field values.		1
FieldInputValueNormalizerTraitTest		class	Drupal\Tests\Core\Field	core/tests/Drupal/Tests/Core/Field/FieldInputValueNormalizerTraitTest.php	@coversDefaultClass \Drupal\Core\Field\FieldInputValueNormalizerTrait[[api-linebreak]] @group Field
FieldInstance		class	Drupal\field\Plugin\migrate\source\d6	core/modules/field/src/Plugin/migrate/source/d6/FieldInstance.php	Drupal 6 field instances source from database.		1
FieldInstance		class	Drupal\field\Plugin\migrate\source\d7	core/modules/field/src/Plugin/migrate/source/d7/FieldInstance.php	Drupal 7 field instances source from database.	3	1
FieldInstanceDefaults		class	Drupal\field\Plugin\migrate\process\d6	core/modules/field/src/Plugin/migrate/process/d6/FieldInstanceDefaults.php	Determines the default field settings.
FieldInstanceDefaults		class	Drupal\field\Plugin\migrate\process\d7	core/modules/field/src/Plugin/migrate/process/d7/FieldInstanceDefaults.php	#[MigrateProcess('d7_field_instance_defaults')]
FieldInstanceLabelDescriptionTranslationTest		class	Drupal\Tests\field\Kernel\Plugin\migrate\source\d6	core/modules/field/tests/src/Kernel/Plugin/migrate/source/d6/FieldInstanceLabelDescriptionTranslationTest.php	Tests the field label and description translation source plugin.
FieldInstanceLabelDescriptionTranslationTest		class	Drupal\Tests\field\Kernel\Plugin\migrate\source\d7	core/modules/field/tests/src/Kernel/Plugin/migrate/source/d7/FieldInstanceLabelDescriptionTranslationTest.php	Tests the field label and description translation source plugin.
FieldInstanceOptionTranslation		class	Drupal\field\Plugin\migrate\source\d6	core/modules/field/src/Plugin/migrate/source/d6/FieldInstanceOptionTranslation.php	Drupal 6 i18n field instance option labels source from database.
FieldInstanceOptionTranslation		class	Drupal\field\Plugin\migrate\process\d6	core/modules/field/src/Plugin/migrate/process/d6/FieldInstanceOptionTranslation.php	Determines the settings property and translation for boolean fields.
FieldInstanceOptionTranslation		class	Drupal\field\Plugin\migrate\process\d7	core/modules/field/src/Plugin/migrate/process/d7/FieldInstanceOptionTranslation.php	Determines the settings property and translation for boolean fields.
FieldInstanceOptionTranslationTest		class	Drupal\Tests\field\Kernel\Plugin\migrate\source\d6	core/modules/field/tests/src/Kernel/Plugin/migrate/source/d6/FieldInstanceOptionTranslationTest.php	Tests the field instance option translation source plugin.
FieldInstancePerFormDisplay		class	Drupal\field\Plugin\migrate\source\d6	core/modules/field/src/Plugin/migrate/source/d6/FieldInstancePerFormDisplay.php	Drupal 6 field instance per form display source from database.
FieldInstancePerFormDisplay		class	Drupal\field\Plugin\migrate\source\d7	core/modules/field/src/Plugin/migrate/source/d7/FieldInstancePerFormDisplay.php	Drupal 7 field instance per form display source from database.
FieldInstancePerFormDisplayTest		class	Drupal\Tests\field\Kernel\Plugin\migrate\source\d6	core/modules/field/tests/src/Kernel/Plugin/migrate/source/d6/FieldInstancePerFormDisplayTest.php	Tests d6_field_instance_per_form_display source plugin.
FieldInstancePerFormDisplayTest		class	Drupal\Tests\field\Kernel\Plugin\migrate\source\d7	core/modules/field/tests/src/Kernel/Plugin/migrate/source/d7/FieldInstancePerFormDisplayTest.php	Tests D7 field instance per form display source plugin.
FieldInstancePerViewMode		class	Drupal\field\Plugin\migrate\source\d6	core/modules/field/src/Plugin/migrate/source/d6/FieldInstancePerViewMode.php	Drupal 6 field instance per view mode source from database.
FieldInstancePerViewMode		class	Drupal\field\Plugin\migrate\source\d7	core/modules/field/src/Plugin/migrate/source/d7/FieldInstancePerViewMode.php	Drupal 7 field instance per view mode source class.
FieldInstancePerViewModeTest		class	Drupal\Tests\field\Kernel\Plugin\migrate\source\d6	core/modules/field/tests/src/Kernel/Plugin/migrate/source/d6/FieldInstancePerViewModeTest.php	Tests D6 fields per view mode source plugin.
FieldInstancePerViewModeTest		class	Drupal\Tests\field\Kernel\Plugin\migrate\source\d7	core/modules/field/tests/src/Kernel/Plugin/migrate/source/d7/FieldInstancePerViewModeTest.php	Tests D7 field instance per view mode source plugin.
FieldInstanceSettings		class	Drupal\field\Plugin\migrate\process\d6	core/modules/field/src/Plugin/migrate/process/d6/FieldInstanceSettings.php	Determines the field instance settings.		1
FieldInstanceSettings		class	Drupal\field\Plugin\migrate\process\d7	core/modules/field/src/Plugin/migrate/process/d7/FieldInstanceSettings.php	Determines the field instance settings.		1
FieldInstanceSettingsTest		class	Drupal\Tests\field\Unit\Plugin\migrate\process\d6	core/modules/field/tests/src/Unit/Plugin/migrate/process/d6/FieldInstanceSettingsTest.php	@coversDefaultClass \Drupal\field\Plugin\migrate\process\d6\FieldInstanceSettings[[api-linebreak]] @group field
FieldInstanceSettingsTest		class	Drupal\Tests\field\Unit\Plugin\migrate\process\d7	core/modules/field/tests/src/Unit/Plugin/migrate/process/d7/FieldInstanceSettingsTest.php	@coversDefaultClass \Drupal\field\Plugin\migrate\process\d7\FieldInstanceSettings[[api-linebreak]] @group field
FieldInstanceTest		class	Drupal\Tests\field\Kernel\Plugin\migrate\source\d6	core/modules/field/tests/src/Kernel/Plugin/migrate/source/d6/FieldInstanceTest.php	Tests D6 field instance source plugin.

Other projects

Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.