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);
    }
}