function node_type_form_validate

Form validation handler for node_type_form().

See also

node_type_form_submit()

File

drupal/modules/node/content_types.inc, line 256

Content type editing user interface.

Code

function node_type_form_validate($form, &$form_state) {
  $type = new stdClass();
  $type->type = $form_state['values']['type'];
  $type->name = trim($form_state['values']['name']);

  // Work out what the type was before the user submitted this form
  $old_type = $form_state['values']['old_type'];
  $types = node_type_get_names();
  if (!$form_state['values']['locked']) {

    // 'theme' conflicts with theme_node_form().
    // '0' is invalid, since elsewhere we check it using empty().
    if (in_array($type->type, array(
      '0',
      'theme',
    ))) {
      form_set_error('type', t("Invalid machine-readable name. Enter a name other than %invalid.", array(
        '%invalid' => $type->type,
      )));
    }
  }
  $names = array_flip($types);
  if (isset($names[$type->name]) && $names[$type->name] != $old_type) {
    form_set_error('name', t('The human-readable name %name is already taken.', array(
      '%name' => $type->name,
    )));
  }
}