function ddf_entityreference_ddf_update_widget in Dynamic dependent fields 7

Implements hook_ddf_update_widget().

File

modules/ddf_entityreference/ddf_entityreference.module, line 16

Code

function ddf_entityreference_ddf_update_widget($dependent_field, $parameters, $selector, $entity, $settings, $controlling_field_name, $entity_type, $bundle) {
  if ($dependent_field['type'] != 'entityreference') {
    return NULL;
  }
  EntityReference_SelectionHandler_DDF::storeControllingFieldValues($parameters, $entity_type, $entity);
  $field = field_info_field($dependent_field['field_name']);
  $instance = field_info_instance($entity_type, $dependent_field['field_name'], $bundle);
  if ($instance['widget']['type'] != 'options_select') {
    return NULL;
  }
  $form = array();
  $form_state = array();
  $element = array(
    '#entity_type' => $entity_type,
    '#entity' => $entity,
    '#required' => $instance['required'],
  );
  $element = options_field_widget_form($form, $form_state, $dependent_field, $instance, LANGUAGE_NONE, array(), 0, $element);
  $default_items = field_get_default_value($entity_type, $entity, $field, $instance, LANGUAGE_NONE);
  $context = array(
    'form' => $form,
    'field' => $field,
    'instance' => $instance,
    'langcode' => LANGUAGE_NONE,
    'items' => $default_items,
    'delta' => 0,
  );
  drupal_alter(array(
    'field_widget_form',
    'field_widget_' . $instance['widget']['type'] . '_form',
  ), $element, $form_state, $context);
  $result = '';
  if (isset($element['#options'])) {
    if (!empty($element['#properties'])) {
      $position = NULL;
      if (isset($element['#properties']['empty_option']) && $element['#properties']['empty_option'] == 'option_select') {
        if (count($element['#options']) == 2) {
          $position = 1;
        }
      }
      elseif (!isset($element['#properties']['empty_option'])) {
        if (count($element['#options']) == 1) {
          $position = 0;
        }
      }
      if (!is_null($position)) {
        $keys = array_keys($element['#options']);
        if (isset($keys[$position])) {
          $element['#value'] = $keys[$position];
        }
      }
    }
    $result = form_select_options($element);
  }
  $commands = array();
  $command = ajax_command_html($selector, $result);
  $command['command'] = 'ddf_insertnowrap';
  $commands[] = $command;

  // If chosen is applied, it can't be updated by attachBehavior().
  $commands[] = ajax_command_invoke($selector, 'trigger', array(
    'liszt:updated',
  ));
  $commands[] = ajax_command_invoke($selector, 'trigger', array(
    'chosen:updated',
  ));

  // Options are changed, so run 'change' handlers.
  $commands[] = ajax_command_invoke($selector, 'trigger', array(
    'change',
  ));
  return $commands;
}