function entity_hierarchy_form_alter in Entity Reference Hierarchy 3.x

Same name and namespace in other branches

1. 8.2 entity_hierarchy.module \entity_hierarchy_form_alter()

Implements hook_form_alter().

File

./entity_hierarchy.module, line 92

A module to make entities hierarchical.

Code

function entity_hierarchy_form_alter(&$form, FormStateInterface $form_state, $form_id) {
  $formObject = $form_state
    ->getFormObject();
  if ($formObject instanceof ContentEntityDeleteForm) {
    if ($children = \Drupal::service('class_resolver')
      ->getInstanceFromDefinition(ChildEntityWarningBuilder::class)
      ->buildChildEntityWarnings($formObject
      ->getEntity())) {
      foreach ($children as $ix => $child) {
        $form['children'][$ix] = [
          'title' => [
            '#markup' => $child
              ->getWarning(),
          ],
          'items' => $child
            ->getList(),
        ];
      }
      return;
    }
  }
  if ($formObject instanceof ContentEntityForm) {

    /** @var \Drupal\Core\Entity\ContentEntityInterface $entity */
    $entity = $formObject
      ->getEntity();
    $parentFields = \Drupal::service('entity_field.manager')
      ->getFieldMapByFieldType('entity_reference_hierarchy');
    if (isset($parentFields[$entity
      ->getEntityTypeId()])) {

      // We have a parent field.
      foreach ($parentFields[$entity
        ->getEntityTypeId()] as $field_name => $detail) {
        if ($entity
          ->hasField($field_name) && \Drupal::request()->query
          ->has($field_name) && isset($form[$field_name]['widget'][0]['target_id']['target_id']) && ($target_entity = \Drupal::entityTypeManager()
          ->getStorage($entity
          ->getEntityTypeId())
          ->load(\Drupal::request()->query
          ->get($field_name))) && $target_entity
          ->access('view')) {
          $form[$field_name]['widget'][0]['target_id']['target_id']['#default_value'] = $target_entity;
        }
      }
    }
  }
}