class RgbItem

Plugin implementation of the 'field_example_rgb' field type.

Plugin annotation


@FieldType(
  id = "field_example_rgb",
  label = @Translation("Example Color RGB"),
  module = "field_example",
  description = @Translation("Demonstrates a field composed of an RGB color."),
  default_widget = "field_example_text",
  default_formatter = "field_example_simple_text"
)

Hierarchy

  • class \Drupal\field_example\Plugin\Field\FieldType\RgbItem extends \Drupal\Core\Field\FieldItemBase

Expanded class hierarchy of RgbItem

File

View on git.drupalcode.org

modules/field_example/src/Plugin/Field/FieldType/RgbItem.php, line 21

Namespace

Drupal\field_example\Plugin\Field\FieldType
View source 
class RgbItem extends FieldItemBase {
  
  /**
   * {@inheritdoc}
   */
  public static function schema(FieldStorageDefinitionInterface $field_definition) {
    return [
      'columns' => [
        'value' => [
          'type' => 'text',
          'size' => 'tiny',
          'not null' => FALSE,
        ],
      ],
    ];
  }
  
  /**
   * {@inheritdoc}
   */
  public function isEmpty() {
    $value = $this->get('value')
      ->getValue();
    return $value === NULL || $value === '';
  }
  
  /**
   * {@inheritdoc}
   */
  public static function propertyDefinitions(FieldStorageDefinitionInterface $field_definition) {
    $properties['value'] = DataDefinition::create('string')->setLabel(t('Hex value'));
    return $properties;
  }

}

Members

Title Modifiers Object type Summary
RgbItem::isEmpty public function
RgbItem::propertyDefinitions public static function
RgbItem::schema public static function