function WorkflowTransitionEditForm::validateForm

Overrides FormBase::validateForm

File

core/modules/workflows/src/Form/WorkflowTransitionEditForm.php, line 131

Class

WorkflowTransitionEditForm

Entity form variant for editing workflow transitions.

Namespace

Code

public function validateForm(array &$form, FormStateInterface $form_state) {
  /** @var \Drupal\workflows\WorkflowInterface $workflow */
  $workflow = $this->getEntity();
  $workflow_type = $workflow->getTypePlugin();
  $transition = $workflow_type->getTransition($this->transitionId);
  $values = $form_state->getValues();
  foreach (array_filter($values['from']) as $from_state_id) {
    if ($workflow_type->hasTransitionFromStateToState($from_state_id, $values['to'])) {
      $existing_transition = $workflow_type->getTransitionFromStateToState($from_state_id, $values['to']);
      if ($existing_transition->id() !== $values['id']) {
        $form_state->setErrorByName('from][' . $from_state_id, $this->t('The transition from %from to %to already exists.', [
          '%from' => $workflow->getTypePlugin()
            ->getState($from_state_id)
            ->label(),
          '%to' => $workflow->getTypePlugin()
            ->getState($values['to'])
            ->label(),
        ]));
      }
    }
  }
  if ($workflow_type->hasFormClass(TransitionInterface::PLUGIN_FORM_KEY)) {
    $subform_state = SubformState::createForSubform($form['type_settings'], $form, $form_state);
    $subform_state->set('transition', $transition);
    $this->pluginFormFactory
      ->createInstance($workflow_type, TransitionInterface::PLUGIN_FORM_KEY)
      ->validateConfigurationForm($form['type_settings'], $subform_state);
  }
}