function bat_unit_form_bat_type_bundle_operation_form_alter in Booking and Availability Management Tools for Drupal 7

Implements hook_form_FORM_ID_alter().

FORM_ID = bat_type_bundle_operation_form Prevent a Bat type bundle with associated unit bundles from being deleted.

File

modules/bat_unit/bat_unit.module, line 1784

Code

function bat_unit_form_bat_type_bundle_operation_form_alter(&$form, &$form_state) {

  // Check if types of a type bundle exist before allowing deletion.
  if ($form_state['op'] == 'delete') {
    $type_bundle = $form_state['bat_type_bundle'];

    // Load the Bat Types associated with this bundle.
    $query = new EntityFieldQuery();
    $query
      ->entityCondition('entity_type', 'bat_type')
      ->propertyCondition('type', $type_bundle->type);
    $types = $query
      ->execute();
    if (isset($types['bat_type']) && count($types['bat_type'])) {

      // This type bundle has associated types, don't allow deletion.
      form_set_error('confirm', t('This Bat Type bundle has associated Types. Please delete all Types before attempting to delete this Bat Type bundle.'));
      unset($form['description']);
      unset($form['actions']);
      unset($form['confirm']);
    }
  }
}