function content_lock_node_form_handler in Content locking (anti-concurrent editing) 7.3

Node and node revision handler.

1 call to content_lock_node_form_handler()

content_lock_form_node_handler in includes/content_lock.forms.inc

Node and revision form handler.

File

includes/content_lock.node.inc, line 11

content_lock.node.inc

Code

function content_lock_node_form_handler(&$form, &$form_state, $form_id) {
  global $user;

  // Check node object.
  $node = empty($form['#node']) ? NULL : $form['#node'];
  if (is_null($node) || !is_object($node)) {
    return;
  }

  // Check node ID.
  $nid = empty($form['nid']['#value']) ? NULL : $form['nid']['#value'];
  if (is_null($nid) || !is_numeric($nid)) {
    return;
  }
  $destination = 'node/' . $nid;

  // Ensure user acquire a lock when reverting a node to an older revision.
  if (!empty($form['#node_revision']) && is_object($form['#node_revision'])) {
    $node = $form['#node_revision'];
    $nid = $node->nid;
    $destination = 'node/' . $nid . '/revisions';
  }

  // Check node body or format is valid.
  if (!empty($node->body) && is_array($node->body) && !empty($node->body[$node->language][0]['format'])) {

    // The content_lock_is_lockable() needs to know the original
    // node format. We either dig up a stashed content_lock_old_format or
    // initialize it here.
    // Only touch node edit forms and then only if the form is `normal'
    // and has a body with a format (#1183678).
    $old_format = $node->body[$node->language][0]['format'];
    if (!empty($node->content_lock_old_format)) {
      $old_format = $node->content_lock_old_format;
    }
    if (!empty($form_state['values']['content_lock_old_format'])) {
      $old_format = $form_state['values']['content_lock_old_format'];
    }

    // Set content lock existing format.
    $node->content_lock_old_format = $old_format;
    $form['content_lock_old_format'] = array(
      '#type' => 'hidden',
      '#value' => $node->content_lock_old_format,
    );
  }

  // Add skip locking hook for other modules.
  $skip_lock = FALSE;
  $result = module_invoke_all('content_lock_skip_locking', $node, $form_id, $form, $form_state);
  foreach ($result as $bool) {
    if (is_bool($bool)) {
      $skip_lock = $skip_lock || $bool;
    }
  }
  if ($skip_lock === FALSE) {

    // Adding cancel button, if configured.
    if (variable_get('content_lock_admin_cancelbutton', TRUE)) {
      _content_lock_node_form_handler_button($form, $form_state, $form_id);
    }
    $menu_item = menu_get_item();
    if (empty($_GET['content_lock_token']) || !drupal_valid_token($_GET['content_lock_token'], $menu_item['href'])) {

      // Add ajax library.
      drupal_add_library('system', 'drupal.ajax');
      drupal_set_message(t('The page you are editing could not be locked automatically. Please !link to make sure other people cannot accidentally overwrite your changes.', array(
        '!link' => l(t('lock the page'), 'ajax/content_lock/' . $nid . '/lock/' . drupal_get_token($nid) . '/nojs/', array(
          'attributes' => array(
            'class' => array(
              'use-ajax',
            ),
          ),
        )),
      )), 'error');
      if (!content_lock_is_path_protected($menu_item['path'])) {
        watchdog('content_lock', 'Attempt to load the node_form form at menu path %path which is not protected from CSRF. Developers who want to create custom node editing pages and protect them with hook_content_lock_path_protected() or use protection_menu_token module to protect this path.', array(
          '%path' => $menu_item['path'],
        ), WATCHDOG_WARNING);
      }
    }
    else {

      // Finally set the lock if everything passed.
      if (content_lock_locking($nid, $user->uid) == FALSE) {

        // Could not lock node, it's locked by someone else.
        drupal_goto($destination);
      }
    }
  }
}