/** * Gets default constraints for the given data definition. * * This generates default constraint definitions based on the data definition; * e.g. a NotNull constraint is generated if the data is defined as required. * Besides that any constraints defined for the data type, i.e. below the * 'constraint' key of the type's plugin definition, are taken into account. * * @param \Drupal\Core\TypedData\DataDefinitionInterface $definition * A data definition. * * @return array * An array of validation constraint definitions, keyed by constraint name. * Each constraint definition can be used for instantiating * \Symfony\Component\Validator\Constraint objects. */ public function getDefaultConstraints(DataDefinitionInterface $definition) { $constraints = array(); $type_definition = $this->getDefinition($definition->getDataType()); // Auto-generate a constraint for data types implementing a primitive // interface. if (is_subclass_of($type_definition['class'], '\\Drupal\\Core\\TypedData\\PrimitiveInterface')) { $constraints['PrimitiveType'] = array(); } // Add in constraints specified by the data type. if (isset($type_definition['constraints'])) { $constraints += $type_definition['constraints']; } // Add the NotNull constraint for required data. if ($definition->isRequired()) { $constraints['NotNull'] = array(); } // Check if the class provides allowed values. if (is_subclass_of($definition->getClass(), 'Drupal\\Core\\TypedData\\OptionsProviderInterface')) { $constraints['AllowedValues'] = array(); } // Add any constraints about referenced data. if ($definition instanceof DataReferenceDefinitionInterface) { $constraints += $definition->getTargetDefinition()->getConstraints(); } return $constraints; }
/** * {@inheritdoc} */ public function isRequired() { return $this->wrappedProperty->isRequired(); }