public function NodeFormController::validate

Overrides Drupal\Core\Entity\EntityFormController::validate().

Overrides EntityFormController::validate

File

drupal/core/modules/node/lib/Drupal/node/NodeFormController.php, line 323
Definition of Drupal\node\NodeFormController.

Class

NodeFormController
Form controller for the node edit forms.

Namespace

Drupal\node

Code

public function validate(array $form, array &$form_state) {
  $node = $this
    ->buildEntity($form, $form_state);
  if (isset($node->nid) && node_last_changed($node->nid, $this
    ->getFormLangcode($form_state)) > $node->changed) {
    form_set_error('changed', t('The content on this page has either been modified by another user, or you have already submitted modifications using this form. As a result, your changes cannot be saved.'));
  }

  // Validate the "authored by" field.
  if (!empty($node->name) && !($account = user_load_by_name($node->name))) {

    // The use of empty() is mandatory in the context of usernames
    // as the empty string denotes the anonymous user. In case we
    // are dealing with an anonymous user we set the user ID to 0.
    form_set_error('name', t('The username %name does not exist.', array(
      '%name' => $node->name,
    )));
  }

  // Validate the "authored on" field.
  // The date element contains the date object.
  $date = $node->date instanceof DrupalDateTime ? $node->date : new DrupalDateTime($node->date);
  if ($date
    ->hasErrors()) {
    form_set_error('date', t('You have to specify a valid date.'));
  }

  // Invoke hook_validate() for node type specific validation and
  // hook_node_validate() for miscellaneous validation needed by modules.
  // Can't use node_invoke() or module_invoke_all(), because $form_state must
  // be receivable by reference.
  if ($function = node_hook($node->type, 'validate')) {
    $function($node, $form, $form_state);
  }
  foreach (module_implements('node_validate') as $module) {
    $function = $module . '_node_validate';
    $function($node, $form, $form_state);
  }
  parent::validate($form, $form_state);
}