1 options.element.inc _form_options_validate($element, &$form_state)

Logic function for form_options_validate(). Do not call directly.

See also



core/modules/field/modules/options/options.element.inc, line 129
All logic for options form elements.


function _form_options_validate($element, &$form_state) {
  // Even though we already have the converted options in #value['options'], run
  // the conversion again to check for duplicates in the user-defined list.
  $duplicates = array();
  $options = form_options_from_text($element['#value']['options_text'], $element['#key_type'], empty($element['#optgroups']), $duplicates);

  // Check if a key is used multiple times.
  if (count($duplicates) == 1) {
    form_error($element, t('The key %key has been used multiple times. Each key must be unique to display properly.', array('%key' => reset($duplicates))));
  elseif (!empty($duplicates)) {
    array_walk($duplicates, 'check_plain');
    $duplicate_list = theme('item_list', array('items' => $duplicates));
    form_error($element, t('The following keys have been used multiple times. Each key must be unique to display properly.') . $duplicate_list);

  // Add the list of duplicates to the page so that we can highlight the fields.
  if (!empty($duplicates)) {
    backdrop_add_js(array('optionsElement' => array('errors' => backdrop_map_assoc($duplicates))), 'setting');

  // Check if no options are specified.
  if (empty($options) && $element['#required']) {
    form_error($element, t('At least one option must be specified.'));

  // Check for numeric keys if needed.
  if ($element['#key_type'] == 'numeric') {
    foreach ($options as $key => $value) {
      if (!is_int($key)) {
        form_error($element, t('The keys for the %title field must be integers.', array('%title' => $element['#title'])));

  // Check that the limit of options has not been exceeded.
  if (!empty($element['#limit'])) {
    $count = 0;
    foreach ($options as $value) {
      if (is_array($value)) {
        $count += count($value);
      else {
    if ($count > $element['#limit']) {
      form_error($element, t('The %title field supports a maximum of @count options. Please reduce the number of options.', array('%title' => $element['#title'], '@count' => $element['#limit'])));