public function EntityOperations::entityFormAlter in Drupal 8

Same name and namespace in other branches

1. 9 core/modules/workspaces/src/EntityOperations.php \Drupal\workspaces\EntityOperations::entityFormAlter()

Alters entity forms to disallow concurrent editing in multiple workspaces.

Parameters

array $form: An associative array containing the structure of the form.

\Drupal\Core\Form\FormStateInterface $form_state: The current state of the form.

string $form_id: The form ID.

See also

hook_form_alter()

File

core/modules/workspaces/src/EntityOperations.php, line 253

Class

EntityOperations

Defines a class for reacting to entity events.

Namespace

Drupal\workspaces

Code

public function entityFormAlter(array &$form, FormStateInterface $form_state, $form_id) {

  /** @var \Drupal\Core\Entity\RevisionableInterface $entity */
  $entity = $form_state
    ->getFormObject()
    ->getEntity();
  if (!$this->workspaceManager
    ->isEntityTypeSupported($entity
    ->getEntityType())) {
    return;
  }

  // For supported entity types, signal the fact that this form is safe to use
  // in a non-default workspace.
  // @see \Drupal\workspaces\FormOperations::validateForm()
  $form_state
    ->set('workspace_safe', TRUE);

  // Add an entity builder to the form which marks the edited entity object as
  // a pending revision. This is needed so validation constraints like
  // \Drupal\path\Plugin\Validation\Constraint\PathAliasConstraintValidator
  // know in advance (before hook_entity_presave()) that the new revision will
  // be a pending one.
  if ($this->workspaceManager
    ->hasActiveWorkspace()) {
    $form['#entity_builders'][] = [
      get_called_class(),
      'entityFormEntityBuild',
    ];
  }

  // Run the workspace conflict validation constraint when the entity form is
  // being built so we can "disable" it early and display a message to the
  // user, instead of allowing them to enter data that can never be saved.
  foreach ($entity
    ->validate()
    ->getEntityViolations() as $violation) {
    if ($violation
      ->getConstraint() instanceof EntityWorkspaceConflictConstraint) {
      $form['#markup'] = $violation
        ->getMessage();
      $form['#access'] = FALSE;
      continue;
    }
  }
}