public function NodeHierarchyChildrenForm::form in Entity Reference Hierarchy 8

Gets the actual form array to be built.

Overrides ContentEntityForm::form

See also

\Drupal\Core\Entity\EntityForm::processForm()

\Drupal\Core\Entity\EntityForm::afterBuild()

File

src/Form/NodehierarchyChildrenForm.php, line 61

Contains \Drupal\entity_hierarchy\Form\NodehierarchyChildrenForm.

Class

NodeHierarchyChildrenForm

Defines a form that is displayed when visiting /node/{node}/children

Namespace

Drupal\entity_hierarchy\Form

Code

public function form(array $form, FormStateInterface $form_state) {
  $hierarchy_storage = \Drupal::service('entity_hierarchy.outline_storage');
  $hierarchy_manager = \Drupal::service('entity_hierarchy.manager');
  $children = $this->entity;
  $id = $this->entity
    ->id();
  $url = Url::fromRoute('<current>');
  $curr_path = $url
    ->toString();
  $path = explode('/', $curr_path);
  $nid = $path[2];
  $node = Node::load($nid);
  $children = $hierarchy_storage
    ->hierarchyGetNodeChildren($node);
  if ($children) {
    $form['children'] = array(
      '#type' => 'table',
      '#header' => array(
        t('Child Title'),
        t('Type'),
        t('Weight'),
        t('Operations'),
      ),
      '#tabledrag' => array(
        array(
          'action' => 'order',
          'relationship' => 'sibling',
          'group' => 'children-order-weight',
        ),
      ),
    );

    // Add CSS to the form via .libraries.yml file
    $form['#attached'] = array(
      'library' => array(
        'entity_hierarchy/entity_hierarchy.children',
      ),
    );
  }
  $type_names = node_type_get_names();
  foreach ($children as $child) {
    if ($node = Node::load($child->cnid)) {
      $url = Url::fromRoute('entity.node.canonical', array(
        'node' => $node
          ->id(),
      ));
      $form['children'][$child->hid]['#attributes']['class'][] = 'draggable';
      $form['children'][$child->hid]['#weight'] = $child->cweight;
      $form['children'][$child->hid]['title'] = array(
        '#markup' => $this
          ->l(SafeMarkup::checkPlain($node
          ->getTitle()), $url),
      );
      $form['children'][$child->hid]['type'] = array(
        '#markup' => SafeMarkup::checkPlain($type_names[$node
          ->getType()]),
      );

      //
      $form['children'][$child->hid]['weight'] = array(
        '#type' => 'weight',
        '#title' => t('Weight for @title', array(
          '@title' => $this
            ->l($node
            ->getTitle(), $url),
        )),
        '#title_display' => 'invisible',
        '#default_value' => $child->cweight,
        // Classify the weight element for #tabledrag.
        '#attributes' => array(
          'class' => array(
            'children-order-weight',
          ),
        ),
      );

      // Operations column.
      $form['children'][$child->hid]['operations'] = array(
        '#type' => 'operations',
        '#links' => array(),
      );
      $id = $node
        ->id();
      $form['children'][$child->hid]['operations']['#links']['edit'] = array(
        'title' => t('Edit'),
        'url' => Url::fromRoute('entity.node.edit_form', array(
          'node' => $node
            ->id(),
        )),
      );
      $form['children'][$child->hid]['operations']['#links']['delete'] = array(
        'title' => t('Delete'),
        'url' => Url::fromRoute('entity.node.delete_form', array(
          'node' => $node
            ->id(),
        )),
      );

      // The link to the child tab
      $form['children'][$child->hid]['operations']['#links']['children'] = array(
        'title' => t('Children'),
        'url' => Url::fromRoute('entity.node.entity_hierarchy_children_form', array(
          'node' => $node
            ->id(),
        )),
      );
    }
  }
  if (!is_array($form['children'])) {

    // Todo: better use the #empty instead; see https://www.drupal.org/node/1876710
    $form['no_children'] = array(
      '#type' => 'markup',
      '#markup' => t('This node has no children.'),
    );
  }

  // Build the add child links
  // TODO: add using renderable array instead, then find suitable place for code
  $current_user = \Drupal::currentUser();
  if ($current_user
    ->hasPermission('create child nodes') && ($current_user
    ->hasPermission('create child of any parent') || $node
    ->access('update'))) {
    $url = Url::fromRoute('<current>');
    $curr_path = $url
      ->toString();
    $path = explode('/', $curr_path);
    $nid = $path[2];
    $node = Node::load($nid);
    if (is_object($node)) {
      $node_type = $node
        ->getType();
    }
    $allowed_child_types = $hierarchy_manager
      ->hierarchyGetAllowedChildTypes($node_type);
    foreach ($allowed_child_types as $type) {
      if ($node
        ->access('create')) {
        $destination = (array) drupal_get_destination() + array(
          'parent' => $nid,
        );
        $url = Url::fromRoute('node.add', array(
          'node_type' => $type,
        ), array(
          'query' => $destination,
        ));
        $link = Link::fromTextAndUrl(t($type), $url);
        $create_links[] = render(@$link
          ->toRenderable());
      }
      if ($create_links) {
        $out = '<div class="newchild">' . t('Create new child ') . implode(" | ", $create_links) . '</div>';
      }
      $form['newchild']['#suffix'] = $out;
    }
  }
  return $form;
}