Defines field item properties.

Properties that are required to constitute a valid, non-empty item should be denoted with \Drupal\Core\TypedData\DataDefinition::setRequired().

Return value

\Drupal\Core\TypedData\DataDefinitionInterface[] An array of property definitions of contained properties, keyed by property name.

Overrides FieldItemInterface::propertyDefinitions

File

core/modules/options/src/Plugin/Field/FieldType/ListStringItem.php, line 26

Class

ListStringItem

Plugin implementation of the 'list_string' field type.

Namespace

Drupal\options\Plugin\Field\FieldType

Code

public static function propertyDefinitions(FieldStorageDefinitionInterface $field_definition) {
  $properties['value'] = DataDefinition::create('string')->setLabel(t('Text value'))
    ->addConstraint('Length', [
    'max' => 255,
  ])
    ->setRequired(TRUE);
  return $properties;
}

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