Determines whether a data value is required.

For required data a non-NULL value is mandatory.

Return value

bool Whether a data value is required.

2 methods override DataDefinitionInterface::isRequired()

DataDefinition::isRequired in core/lib/Drupal/Core/TypedData/DataDefinition.php

Determines whether a data value is required.

FieldDefinitionInterface::isRequired in core/lib/Drupal/Core/Field/FieldDefinitionInterface.php

Returns whether the field can be empty.

File

core/lib/Drupal/Core/TypedData/DataDefinitionInterface.php, line 114

Class

DataDefinitionInterface

Interface for data definitions.

Namespace

Drupal\Core\TypedData

Code

public function isRequired();

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