class OnlyOneConstraint in Allow a content type only once (Only One) 8

Checks that Only One node for each language exists.

Plugin annotation

@Constraint(
  id = "OnlyOne",
  label = @Translation("OnlyOne Constraint", context = "Validation"),
  type = "entity:node"
)

Hierarchy

• class \Drupal\onlyone\Plugin\Validation\Constraint\OnlyOneConstraint extends \Symfony\Component\Validator\Constraint

File

src/Plugin/Validation/Constraint/OnlyOneConstraint.php, line 16

Namespace

Drupal\onlyone\Plugin\Validation\Constraint

class OnlyOneConstraint extends Constraint {

  /**
   * Message shown when a node of a language exists on a content type.
   *
   * The message that will be shown when a node of a language exists on
   * a configured content type and you try to add another node for the same
   * language.
   *
   * @var string
   *
   * @see https://www.drupal.org/project/onlyone/issues/2962186
   * @see https://www.drupal.org/project/onlyone/issues/2969293
   */
  public $nodeExists = "The content type %content_type is configured to have Only One node per language but the node <a href=':href'>@title</a> exists for the %language language.";

}

Members

Name	Modifiers	Type	Description	Overrides
OnlyOneConstraint::$nodeExists	public	property	Message shown when a node of a language exists on a content type.