function date_popup_validate

Massage the input values back into a single date.

When used as a Views widget, the validation step always gets triggered, even with no form submission. Before form submission $element['#value'] contains a string, after submission it contains an array.

File

core/modules/date/date.elements.inc, line 1209

Date forms and form themes and validation.

Code

function date_popup_validate($element, &$form_state) {
  if (date_hidden_element($element)) {
    return;
  }
  if (is_string($element['#value'])) {
    return;
  }

  module_load_include('inc', 'date', 'date.elements');
  $input_exists = NULL;
  $input = backdrop_array_get_nested_value($form_state['values'], $element['#parents'], $input_exists);
  // If the date is a string, it is not considered valid and can cause problems
  // later on, so just exit out now.
  if (is_string($input)) {
    return;
  }

  backdrop_alter('date_popup_pre_validate', $element, $form_state, $input);

  $label = '';
  if (!empty($element['#date_title'])) {
    $label = t($element['#date_title']);
  }
  elseif (!empty($element['#title'])) {
    $label = t($element['#title']);
  }
  $date = date_popup_input_date($element, $input);

  // If the date has errors, display them.
  // If something was input but there is no date, the date is invalid.
  // If the field is empty and required, set error message and return.
  $error_field = implode('][', $element['#parents']);
  if (empty($date) || !empty($date->errors)) {
    if (is_object($date) && !empty($date->errors)) {
      if (count($date->errors) === 1) {
        $error_list = ' ' . reset($date->errors);
      }
      else {
        $error_list = theme('item_list', array('items' => $date->errors));
      }
      $message = t('The value input for field %field is invalid:', array('%field' => $label)) . $error_list;
      form_set_error($error_field, $message);
      return;
    }
    if (!empty($input['date'])) {
      $message = t('The value input for field %field is invalid.', array('%field' => $label));
      form_set_error($error_field, $message);
      return;
    }
    if ($element['#required']) {
      $message = t('A valid date is required for %title.', array('%title' => $label));
      form_set_error($error_field, $message);
      return;
    }
  }

  // If the created date is valid, set it.
  $value = date_is_date($date) ? $date->format(DATE_FORMAT_DATETIME) : NULL;
  form_set_value($element, $value, $form_state);
}