function filefield_js in FileField 6.2

Same name and namespace in other branches

1. 5.2 filefield.module \filefield_js()
2. 6.3 filefield.module \filefield_js()

Shared AHAH callback for uploads and deletions. It just differs in a few unimportant details (what happens to the file, and which form is used as a replacement) so these details are taken care of by a form callback.

1 string reference to 'filefield_js'

filefield_menu in ./filefield.module

Implementation of hook_menu().

File

./filefield.widget.inc, line 637

FileField: Defines a CCK file field type.

Code

function filefield_js($field_name, $type_name, $delta, $form_callback) {
  $field = content_fields($field_name, $type_name);
  if (empty($field) || empty($_POST['form_build_id'])) {

    // Invalid request.
    print drupal_to_js(array(
      'data' => '',
    ));
    exit;
  }

  // Build the new form.
  $form_state = array(
    'submitted' => FALSE,
  );
  $form_build_id = $_POST['form_build_id'];
  $form = form_get_cache($form_build_id, $form_state);
  if (!$form) {

    // Invalid form_build_id.
    print drupal_to_js(array(
      'data' => '',
    ));
    exit;
  }

  // form_get_cache() doesn't yield the original $form_state,
  // but form_builder() does. Needed for retrieving the file array.
  $built_form = $form;
  $built_form_state = $form_state;
  $built_form += array(
    '#post' => $_POST,
  );
  $built_form = form_builder($_POST['form_id'], $built_form, $built_form_state);

  // Clean ids, so that the same element doesn't get a different element id
  // when rendered once more further down.
  form_clean_id(NULL, TRUE);

  // Perform the action for this AHAH callback.
  $form_callback($built_form, $built_form_state, $field, $delta);

  // Ask CCK for the replacement form element. Going through CCK gets us
  // the benefit of nice stuff like '#required' merged in correctly.
  module_load_include('inc', 'content', 'includes/content.node_form');
  $field_element = content_field_form($form, $built_form_state, $field, $delta);
  $delta_element = $field_element[$field_name][0];

  // there's only one element in there
  // Add the new element at the right place in the form.
  if (module_exists('fieldgroup') && ($group_name = _fieldgroup_field_get_group($type_name, $field_name))) {
    $form[$group_name][$field_name][$delta] = $delta_element;
  }
  else {
    $form[$field_name][$delta] = $delta_element;
  }

  // Write the (unbuilt, updated) form back to the form cache.
  form_set_cache($form_build_id, $form, $form_state);

  // Render the form for output.
  $form += array(
    '#post' => $_POST,
    '#programmed' => FALSE,
  );
  drupal_alter('form', $form, array(), 'filefield_js');
  $form_state = array(
    'submitted' => FALSE,
  );
  $form = form_builder('filefield_js', $form, $form_state);
  $field_form = empty($group_name) ? $form[$field_name] : $form[$group_name][$field_name];

  // We add a div around the new content to tell AHAH to let this fade in.
  $field_form[$delta]['#prefix'] = '<div class="ahah-new-content">' . (isset($field_form[$delta]['#prefix']) ? $field_form[$delta]['#prefix'] : '');
  $field_form[$delta]['#suffix'] = (isset($field_form[$delta]['#suffix']) ? $field_form[$delta]['#suffix'] : '') . '</div>';
  $output = theme('status_messages') . drupal_render($field_form[$delta]);

  // AHAH is not being nice to us and doesn't know the "other" button (that is,
  // either "Upload" or "Delete") yet. Which in turn causes it not to attach
  // AHAH behaviours after replacing the element. So we need to tell it first.
  $javascript = drupal_add_js(NULL, NULL);
  if (isset($javascript['setting'])) {
    $output .= '<script type="text/javascript">jQuery.extend(Drupal.settings, ' . drupal_to_js(call_user_func_array('array_merge_recursive', $javascript['setting'])) . ');</script>';
  }

  // For some reason, file uploads don't like drupal_json() with its manual
  // setting of the text/javascript HTTP header. So use this one instead.
  print drupal_to_js(array(
    'status' => TRUE,
    'data' => $output,
  ));
  exit;
}