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
BookRemoveForm class Drupal\book\Form core/modules/book/src/Form/BookRemoveForm.php Remove form for book module. 1
BookRemoveForm class Drupal\book\Form core/modules/book/src/Form/BookRemoveForm.php Remove form for book module. 1
BookRemoveForm class Drupal\book\Form core/modules/book/src/Form/BookRemoveForm.php Remove form for book module. 1
BookSettingsForm class Drupal\book\Form core/modules/book/src/Form/BookSettingsForm.php Configure book settings for this site. 1
BookSettingsForm class Drupal\book\Form core/modules/book/src/Form/BookSettingsForm.php Configure book settings for this site. 1
BookSettingsForm class Drupal\book\Form core/modules/book/src/Form/BookSettingsForm.php Configure book settings for this site. 1
BookTest class Drupal\Tests\book\Kernel\Plugin\migrate\source core/modules/book/tests/src/Kernel/Plugin/migrate/source/BookTest.php @covers \Drupal\book\Plugin\migrate\source\Book[[api-linebreak]] @group book
BookTest class Drupal\Tests\book\Functional core/modules/book/tests/src/Functional/BookTest.php Create a book, add pages, and test book interface.
BookTestTrait trait Drupal\Tests\book\Functional core/modules/book/tests/src/Functional/BookTestTrait.php Provides common functionality for Book test classes.
BookUninstallTest class Drupal\Tests\book\Kernel core/modules/book/tests/src/Kernel/BookUninstallTest.php Tests that the Book module cannot be uninstalled if books exist.
BookUninstallValidator class Drupal\book\ProxyClass core/modules/book/src/ProxyClass/BookUninstallValidator.php Provides a proxy class for \Drupal\book\BookUninstallValidator.
BookUninstallValidator class Drupal\book core/modules/book/src/BookUninstallValidator.php Prevents book module from being uninstalled under certain conditions. 2
BookUninstallValidator class Drupal\book core/modules/book/src/BookUninstallValidator.php Prevents book module from being uninstalled under certain conditions. 2
BookUninstallValidator class Drupal\book core/modules/book/src/BookUninstallValidator.php Prevents book module from being uninstalled under certain conditions. 2
BookUninstallValidatorTest class Drupal\Tests\book\Unit core/modules/book/tests/src/Unit/BookUninstallValidatorTest.php @coversDefaultClass \Drupal\book\BookUninstallValidator[[api-linebreak]] @group book
Boolean class Drupal\views\Plugin\views\field core/modules/views/src/Plugin/views/field/Boolean.php A handler to provide proper displays for booleans.
BooleanCheckboxWidget class Drupal\Core\Field\Plugin\Field\FieldWidget core/lib/Drupal/Core/Field/Plugin/Field/FieldWidget/BooleanCheckboxWidget.php Plugin implementation of the 'boolean_checkbox' widget.
BooleanData class Drupal\Core\TypedData\Plugin\DataType core/lib/Drupal/Core/TypedData/Plugin/DataType/BooleanData.php The boolean data type. 4 1
BooleanData class Drupal\Core\TypedData\Plugin\DataType core/lib/Drupal/Core/TypedData/Plugin/DataType/BooleanData.php The boolean data type. 4 1
BooleanData class Drupal\Core\TypedData\Plugin\DataType core/lib/Drupal/Core/TypedData/Plugin/DataType/BooleanData.php The boolean data type. 4 1
BooleanData class Drupal\Core\TypedData\Plugin\DataType core/lib/Drupal/Core/TypedData/Plugin/DataType/BooleanData.php The boolean data type. 4 1
BooleanData class Drupal\Core\TypedData\Plugin\DataType core/lib/Drupal/Core/TypedData/Plugin/DataType/BooleanData.php The boolean data type. 4 1
BooleanData class Drupal\Core\TypedData\Plugin\DataType core/lib/Drupal/Core/TypedData/Plugin/DataType/BooleanData.php The boolean data type. 4 1
BooleanFieldTest class Drupal\Tests\field\Functional\Boolean core/modules/field/tests/src/Functional/Boolean/BooleanFieldTest.php Tests boolean field functionality.
BooleanFormatter class Drupal\Core\Field\Plugin\Field\FieldFormatter core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/BooleanFormatter.php Plugin implementation of the 'boolean' formatter.
BooleanFormatterSettingsTest class Drupal\Tests\field\FunctionalJavascript\Boolean core/modules/field/tests/src/FunctionalJavascript/Boolean/BooleanFormatterSettingsTest.php Tests the Boolean field formatter settings.
BooleanFormatterSettingsTest class Drupal\Tests\field\Functional\Boolean core/modules/field/tests/src/Functional/Boolean/BooleanFormatterSettingsTest.php Tests the Boolean field formatter settings.
BooleanFormatterTest class Drupal\Tests\field\Kernel\Boolean core/modules/field/tests/src/Kernel/Boolean/BooleanFormatterTest.php Tests the boolean formatter.
BooleanInterface interface Drupal\Core\TypedData\Type core/lib/Drupal/Core/TypedData/Type/BooleanInterface.php Interface for boolean data. 1 4
BooleanInterface interface Drupal\Core\TypedData\Type core/lib/Drupal/Core/TypedData/Type/BooleanInterface.php Interface for boolean data. 1 4
BooleanInterface interface Drupal\Core\TypedData\Type core/lib/Drupal/Core/TypedData/Type/BooleanInterface.php Interface for boolean data. 1 4
BooleanInterface interface Drupal\Core\TypedData\Type core/lib/Drupal/Core/TypedData/Type/BooleanInterface.php Interface for boolean data. 1 4
BooleanInterface interface Drupal\Core\TypedData\Type core/lib/Drupal/Core/TypedData/Type/BooleanInterface.php Interface for boolean data. 1 4
BooleanInterface interface Drupal\Core\TypedData\Type core/lib/Drupal/Core/TypedData/Type/BooleanInterface.php Interface for boolean data. 1 4
BooleanItem class Drupal\Core\Field\Plugin\Field\FieldType core/lib/Drupal/Core/Field/Plugin/Field/FieldType/BooleanItem.php Defines the 'boolean' entity field type. 1 6
BooleanItem class Drupal\Core\Field\Plugin\Field\FieldType core/lib/Drupal/Core/Field/Plugin/Field/FieldType/BooleanItem.php Defines the 'boolean' entity field type. 1 6
BooleanItem class Drupal\Core\Field\Plugin\Field\FieldType core/lib/Drupal/Core/Field/Plugin/Field/FieldType/BooleanItem.php Defines the 'boolean' entity field type. 1 6
BooleanItem class Drupal\Core\Field\Plugin\Field\FieldType core/lib/Drupal/Core/Field/Plugin/Field/FieldType/BooleanItem.php Defines the 'boolean' entity field type. 1 6
BooleanItem class Drupal\Core\Field\Plugin\Field\FieldType core/lib/Drupal/Core/Field/Plugin/Field/FieldType/BooleanItem.php Defines the 'boolean' entity field type. 1 6
BooleanItem class Drupal\Core\Field\Plugin\Field\FieldType core/lib/Drupal/Core/Field/Plugin/Field/FieldType/BooleanItem.php Defines the 'boolean' entity field type. 1 6
BooleanItemNormalizer class Drupal\test_fieldtype_boolean_emoji_normalizer\Normalizer core/modules/serialization/tests/modules/test_fieldtype_boolean_emoji_normalizer/src/Normalizer/BooleanItemNormalizer.php Normalizes boolean fields weirdly: renders them as 👍 (TRUE) or 👎 (FALSE). 2
BooleanItemNormalizer class Drupal\test_fieldtype_boolean_emoji_normalizer\Normalizer core/modules/serialization/tests/modules/test_fieldtype_boolean_emoji_normalizer/src/Normalizer/BooleanItemNormalizer.php Normalizes boolean fields weirdly: renders them as 👍 (TRUE) or 👎 (FALSE). 2
BooleanItemNormalizer class Drupal\test_fieldtype_boolean_emoji_normalizer\Normalizer core/modules/serialization/tests/modules/test_fieldtype_boolean_emoji_normalizer/src/Normalizer/BooleanItemNormalizer.php Normalizes boolean fields weirdly: renders them as 👍 (TRUE) or 👎 (FALSE). 2
BooleanItemTest class Drupal\Tests\field\Kernel\Boolean core/modules/field/tests/src/Kernel/Boolean/BooleanItemTest.php Tests the new entity API for the boolean field type.
BooleanNormalizer class Drupal\test_datatype_boolean_emoji_normalizer\Normalizer core/modules/serialization/tests/modules/test_datatype_boolean_emoji_normalizer/src/Normalizer/BooleanNormalizer.php Normalizes boolean data weirdly: renders them as 👍 (TRUE) or 👎 (FALSE). 2
BooleanNormalizer class Drupal\test_datatype_boolean_emoji_normalizer\Normalizer core/modules/serialization/tests/modules/test_datatype_boolean_emoji_normalizer/src/Normalizer/BooleanNormalizer.php Normalizes boolean data weirdly: renders them as 👍 (TRUE) or 👎 (FALSE). 2
BooleanNormalizer class Drupal\test_datatype_boolean_emoji_normalizer\Normalizer core/modules/serialization/tests/modules/test_datatype_boolean_emoji_normalizer/src/Normalizer/BooleanNormalizer.php Normalizes boolean data weirdly: renders them as 👍 (TRUE) or 👎 (FALSE). 2
BooleanOperator class Drupal\views\Plugin\views\filter core/modules/views/src/Plugin/views/filter/BooleanOperator.php Simple filter to handle matching of boolean values. 3 2
BooleanOperator class Drupal\views\Plugin\views\filter core/modules/views/src/Plugin/views/filter/BooleanOperator.php Simple filter to handle matching of boolean values. 3 2
BooleanOperator class Drupal\views\Plugin\views\filter core/modules/views/src/Plugin/views/filter/BooleanOperator.php Simple filter to handle matching of boolean values. 3 2

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