Menu-callback for JavaScript-based uploads.

File

drupal-6.x/modules/upload/upload.module, line 573

File-handling and attaching files to nodes.

Code

function upload_js() {
  $cached_form_state = array();
  $files = array();

  // Load the form from the Form API cache.
  if (!($cached_form = form_get_cache($_POST['form_build_id'], $cached_form_state)) || !isset($cached_form['#node']) || !isset($cached_form['attachments'])) {
    form_set_error('form_token', t('Validation error, please try again. If this error persists, please contact the site administrator.'));
    $output = theme('status_messages');
    print drupal_to_js(array('status' => TRUE, 'data' => $output));
    exit();
  }

  $form_state = array('values' => $_POST);

  // Handle new uploads, and merge tmp files into node-files.
  upload_node_form_submit($cached_form, $form_state);

  if (!empty($form_state['values']['files'])) {
    foreach ($form_state['values']['files'] as $fid => $file) {
      if (isset($cached_form['#node']->files[$fid])) {
        $files[$fid] = $cached_form['#node']->files[$fid];
      }
    }
  }

  $node = $cached_form['#node'];

  $node->files = $files;

  $form = _upload_form($node);

  unset($cached_form['attachments']['wrapper']['new']);
  $cached_form['attachments']['wrapper'] = array_merge($cached_form['attachments']['wrapper'], $form);

  $cached_form['attachments']['#collapsed'] = FALSE;

  form_set_cache($_POST['form_build_id'], $cached_form, $cached_form_state);

  foreach ($files as $fid => $file) {
    if (is_numeric($fid)) {
      $form['files'][$fid]['description']['#default_value'] = $form_state['values']['files'][$fid]['description'];
      $form['files'][$fid]['list']['#default_value'] = !empty($form_state['values']['files'][$fid]['list']);
      $form['files'][$fid]['remove']['#default_value'] = !empty($form_state['values']['files'][$fid]['remove']);
      $form['files'][$fid]['weight']['#default_value'] = $form_state['values']['files'][$fid]['weight'];
    }
  }

  // Render the form for output.
  $form += array(
    '#post' => $_POST,
    '#programmed' => FALSE,
    '#tree' => FALSE,
    '#parents' => array(),
  );

  $empty_form_state = array();
  $data = &$form;
  $data['__drupal_alter_by_ref'] = array(&$empty_form_state);
  drupal_alter('form', $data, 'upload_js');

  $form_state = array('submitted' => FALSE);
  $form = form_builder('upload_js', $form, $form_state);
  $output = theme('status_messages') . drupal_render($form);

  // We send the updated file attachments form.
  // Don't call drupal_json(). ahah.js uses an iframe and
  // the header output by drupal_json() causes problems in some browsers.
  print drupal_to_js(array('status' => TRUE, 'data' => $output));
  exit;
}