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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

Namesort descending Type Namespace Location Description Direct uses Use statements Strings
BlockLanguageCacheTest class Drupal\Tests\block\Functional core/modules/block/tests/src/Functional/BlockLanguageCacheTest.php Tests display of menu blocks with multiple languages.
BlockLanguageTest class Drupal\Tests\block\Functional core/modules/block/tests/src/Functional/BlockLanguageTest.php Tests per-language block configuration.
BlockLayoutTourTest class Drupal\Tests\tour\Functional\Block core/modules/tour/tests/src/Functional/Block/BlockLayoutTourTest.php Tests the Block Layout tour.
BlockLibraryController class Drupal\block\Controller core/modules/block/src/Controller/BlockLibraryController.php Provides a list of block plugins to be added to the layout.
BlockListBuilder class Drupal\block core/modules/block/src/BlockListBuilder.php Defines a class to build a listing of block entities.
BlockListController class Drupal\block\Controller core/modules/block/src/Controller/BlockListController.php Defines a controller to list blocks.
BlockLocalTasksTest class Drupal\Tests\block\Unit\Menu core/modules/block/tests/src/Unit/Menu/BlockLocalTasksTest.php Tests block local tasks.
BlockManager class Drupal\Core\Block core/lib/Drupal/Core/Block/BlockManager.php Manages discovery and instantiation of block plugins. 1 2
BlockManagerInterface interface Drupal\Core\Block core/lib/Drupal/Core/Block/BlockManagerInterface.php Provides an interface for the discovery and instantiation of block plugins. 1 8
BlockManagerTest class Drupal\Tests\Core\Block core/tests/Drupal/Tests/Core/Block/BlockManagerTest.php @coversDefaultClass \Drupal\Core\Block\BlockManager
BlockPageDisplayVariantSubscriber class Drupal\block\EventSubscriber core/modules/block/src/EventSubscriber/BlockPageDisplayVariantSubscriber.php Selects the block page display variant. 2
BlockPageVariantTest class Drupal\Tests\block\Unit\Plugin\DisplayVariant core/modules/block/tests/src/Unit/Plugin/DisplayVariant/BlockPageVariantTest.php @coversDefaultClass \Drupal\block\Plugin\DisplayVariant\BlockPageVariant @group block
BlockPluginCollection class Drupal\block core/modules/block/src/BlockPluginCollection.php Provides a collection of block plugins. 1
BlockPluginHasSettingsTrayFormAccessCheck class Drupal\settings_tray\Access core/modules/settings_tray/src/Access/BlockPluginHasSettingsTrayFormAccessCheck.php Determines whether the requested block has a 'settings_tray' form. 1 2
BlockPluginHasSettingsTrayFormAccessCheckTest class Drupal\Tests\settings_tray\Unit\Access core/modules/settings_tray/tests/src/Unit/Access/BlockPluginHasSettingsTrayFormAccessCheckTest.php @coversDefaultClass \Drupal\settings_tray\Access\BlockPluginHasSettingsTrayFormAccessCheck @group settings_tray
BlockPluginId class Drupal\block\Plugin\migrate\process core/modules/block/src/Plugin/migrate/process/BlockPluginId.php
BlockPluginInterface interface Drupal\Core\Block core/lib/Drupal/Core/Block/BlockPluginInterface.php Defines the required interface for all block plugins. 5 16 1
BlockPluginTrait trait Drupal\Core\Block core/lib/Drupal/Core/Block/BlockPluginTrait.php Provides the base implementation of a block plugin.
BlockRebuildTest class Drupal\Tests\block\Kernel core/modules/block/tests/src/Kernel/BlockRebuildTest.php Tests block_rebuild().
BlockRegion class Drupal\block\Plugin\migrate\process core/modules/block/src/Plugin/migrate/process/BlockRegion.php 1
BlockRegionTest class Drupal\Tests\block\Unit\Plugin\migrate\process core/modules/block/tests/src/Unit/Plugin/migrate/process/BlockRegionTest.php @coversDefaultClass \Drupal\block\Plugin\migrate\process\BlockRegion @group block
BlockRenderAlterContent class Drupal\block_test core/modules/block/tests/modules/block_test/src/BlockRenderAlterContent.php Implements a trusted preRender callback.
BlockRenderOrderTest class Drupal\Tests\block\Functional core/modules/block/tests/src/Functional/BlockRenderOrderTest.php Tests blocks are being rendered in order by weight.
BlockRepository class Drupal\block core/modules/block/src/BlockRepository.php Provides a repository for Block config entities. 2 2
BlockRepositoryInterface interface Drupal\block core/modules/block/src/BlockRepositoryInterface.php 1
BlockRepositoryTest class Drupal\Tests\block\Unit core/modules/block/tests/src/Unit/BlockRepositoryTest.php @coversDefaultClass \Drupal\block\BlockRepository @group block
BlockResourceTestBase abstract class Drupal\Tests\block\Functional\Rest core/modules/block/tests/src/Functional/Rest/BlockResourceTestBase.php 6
BlockSettings class Drupal\block\Plugin\migrate\process core/modules/block/src/Plugin/migrate/process/BlockSettings.php 1
BlockSettingsTest class Drupal\Tests\block\Unit\Plugin\migrate\process core/modules/block/tests/src/Unit/Plugin/migrate/process/BlockSettingsTest.php @coversDefaultClass \Drupal\block\Plugin\migrate\process\BlockSettings @group block
BlockStorageUnitTest class Drupal\Tests\block\Kernel core/modules/block/tests/src/Kernel/BlockStorageUnitTest.php Tests the storage of blocks.
BlockSystemBrandingTest class Drupal\Tests\block\Functional core/modules/block/tests/src/Functional/BlockSystemBrandingTest.php Tests branding block display.
BlockTemplateSuggestionsTest class Drupal\Tests\block\Kernel core/modules/block/tests/src/Kernel/BlockTemplateSuggestionsTest.php Tests the block_theme_suggestions_block() function.
BlockTemplateSuggestionsTest class Drupal\Tests\block_content\Kernel core/modules/block_content/tests/src/Kernel/BlockTemplateSuggestionsTest.php Tests the block_content_theme_suggestions_block() function.
BlockTest class Drupal\Tests\block\Functional core/modules/block/tests/src/Functional/BlockTest.php Tests basic block functionality.
BlockTest class Drupal\Tests\jsonapi\Functional core/modules/jsonapi/tests/src/Functional/BlockTest.php JSON:API integration test for the "Block" config entity type.
BlockTest class Drupal\Tests\block\Kernel\Plugin\migrate\source core/modules/block/tests/src/Kernel/Plugin/migrate/source/BlockTest.php Tests block source plugin. 1 1
BlockTest class Drupal\Tests\views\Unit\Plugin\views\display core/modules/views/tests/src/Unit/Plugin/views/display/BlockTest.php @coversDefaultClass \Drupal\views\Plugin\views\display\Block @group block
BlockTestBase abstract class Drupal\Tests\block\Functional core/modules/block/tests/src/Functional/BlockTestBase.php Provides setup and helper methods for block module tests. 2
BlockThemeDeprecationTest class Drupal\Tests\block\Unit\Plugin\migrate\process core/modules/block/tests/src/Unit/Plugin/migrate/process/BlockThemeDeprecationTest.php Tests the deprecation notices of the block theme.
BlockTranslation class Drupal\block\Plugin\migrate\source\d6 core/modules/block/src/Plugin/migrate/source/d6/BlockTranslation.php Drupal 6 i18n block data from database.
BlockTranslation class Drupal\block\Plugin\migrate\source\d7 core/modules/block/src/Plugin/migrate/source/d7/BlockTranslation.php Drupal 7 i18n block data from database.
BlockTranslationTest class Drupal\Tests\block\Kernel\Plugin\migrate\source\d6 core/modules/block/tests/src/Kernel/Plugin/migrate/source/d6/BlockTranslationTest.php Tests i18n block source plugin.
BlockTranslationTest class Drupal\Tests\block\Kernel\Plugin\migrate\source\d7 core/modules/block/tests/src/Kernel/Plugin/migrate/source/d7/BlockTranslationTest.php Tests i18n block source plugin.
BlockTypeAccessControlHandler class Drupal\block_content core/modules/block_content/src/BlockTypeAccessControlHandler.php Defines the access control handler for the "Block Type" entity type.
BlockUiTest class Drupal\Tests\block\Functional core/modules/block/tests/src/Functional/BlockUiTest.php Tests that the block configuration UI exists and stores data correctly.
BlockValidationTest class Drupal\Tests\block\Kernel core/modules/block/tests/src/Kernel/BlockValidationTest.php Tests validation of block entities.
BlockViewBuilder class Drupal\block core/modules/block/src/BlockViewBuilder.php Provides a Block view builder.
BlockViewBuilderTest class Drupal\Tests\block\Kernel core/modules/block/tests/src/Kernel/BlockViewBuilderTest.php Tests the block view builder.
BlockVisibility class Drupal\block\Plugin\migrate\process core/modules/block/src/Plugin/migrate/process/BlockVisibility.php 1
BlockVisibilityTest class Drupal\Tests\block\Unit\Plugin\migrate\process core/modules/block/tests/src/Unit/Plugin/migrate/process/BlockVisibilityTest.php Tests the block_visibility process plugin.

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