protected function NodeFormAlter::getGroups in Group Content Menu 8

Get a node's groups for the edit form.

Parameters

\Drupal\Core\Form\FormStateInterface $form_state: Form state object from hook_form_node_form_alter().

\Drupal\node\NodeInterface $node: The node object being edited.

Return value

array|\Drupal\group\Entity\GroupInterface[] An empty array or an array of Groups.

Throws

\Drupal\Component\Plugin\Exception\InvalidPluginDefinitionException

\Drupal\Component\Plugin\Exception\PluginNotFoundException

1 call to NodeFormAlter::getGroups()

NodeFormAlter::alter in src/NodeFormAlter.php

Alter node forms to add GroupContentMenu options where appropriate.

File

src/NodeFormAlter.php, line 231

Class

NodeFormAlter

Helper class to handle altering node forms.

Namespace

Drupal\group_content_menu

Code

protected function getGroups(FormStateInterface $form_state, NodeInterface $node) : array {
  $groups = [];
  if ($group_id = $form_state
    ->get('group')) {

    // If group is set in $form_state, we're currently creating a new node in
    // a group so the node will have only one group.
    $groups[] = $group_id;
  }
  elseif (!$node
    ->isNew()) {

    // We're on a node's edit form. A node can be added to any number of
    // groups so we must load all groups for the node.
    $group_contents = $this->entityTypeManager
      ->getStorage('group_content')
      ->loadByEntity($node);
    $group_ids = array_map(static function (GroupContent $group_content) {
      return $group_content
        ->getGroup()
        ->id();
    }, $group_contents);
    $groups = $this->entityTypeManager
      ->getStorage('group')
      ->loadMultiple($group_ids);
  }
  return $groups;
}