function commons_ajax_upload in Drupal Commons 7.3

Menu callback; Shared Ajax callback for managed_file and media elements.

Identical to the Ajax callback used by file.module and media.module except with the $form_build_id != $_POST['form_build_id'] check removed in order to prevent errors when more than one browsing widget tab contains a managed_file or media file field widget.

See also

file_ajax_upload()

media_ajax_upload()

1 string reference to 'commons_ajax_upload'

commons_media_menu_alter in modules/commons/commons_media/commons_media.module

Implements hook_menu_alter().

File

modules/commons/commons_media/commons_media.module, line 97

Code

function commons_ajax_upload() {
  $form_parents = func_get_args();
  $form_build_id = (string) array_pop($form_parents);

  // Sanitize form parents before using them.
  $form_parents = array_filter($form_parents, 'element_child');
  if (empty($_POST['form_build_id'])) {

    // Invalid request.
    drupal_set_message(t('An unrecoverable error occurred. The uploaded file likely exceeded the maximum file size (@size) that this server supports.', array(
      '@size' => format_size(file_upload_max_size()),
    )), 'error');
    $commands = array();
    $commands[] = ajax_command_replace(NULL, theme('status_messages'));
    return array(
      '#type' => 'ajax',
      '#commands' => $commands,
    );
  }
  list($form, $form_state, $form_id, $form_build_id, $commands) = ajax_get_form();
  if (!$form) {

    // Invalid form_build_id.
    drupal_set_message(t('An unrecoverable error occurred. Use of this form has expired. Try reloading the page and submitting again.'), 'error');
    $commands = array();
    $commands[] = ajax_command_replace(NULL, theme('status_messages'));
    return array(
      '#type' => 'ajax',
      '#commands' => $commands,
    );
  }

  // Get the current element and count the number of files.
  $current_element = $form;
  foreach ($form_parents as $parent) {
    $current_element = $current_element[$parent];
  }
  $current_file_count = isset($current_element['#file_upload_delta']) ? $current_element['#file_upload_delta'] : 0;

  // Process user input. $form and $form_state are modified in the process.
  drupal_process_form($form['#form_id'], $form, $form_state);

  // Retrieve the element to be rendered.
  foreach ($form_parents as $parent) {
    $form = $form[$parent];
  }

  // Add the special Ajax class if a new file was added.
  if (isset($form['#file_upload_delta']) && $current_file_count < $form['#file_upload_delta']) {
    $form[$current_file_count]['#attributes']['class'][] = 'ajax-new-content';
  }
  else {
    $form['#suffix'] .= '<span class="ajax-new-content"></span>';
  }
  $output = theme('status_messages') . drupal_render($form);
  $js = drupal_add_js();
  $settings = call_user_func_array('array_merge_recursive', $js['settings']['data']);
  $commands[] = ajax_command_replace(NULL, $output, $settings);
  return array(
    '#type' => 'ajax',
    '#commands' => $commands,
  );
}