function scheduler_date_value_callback in Scheduler 7

Callback function for the Scheduler date entry elements.

1 string reference to 'scheduler_date_value_callback'

_scheduler_form_alter in ./scheduler.edit.inc

Helper function that does all the work for the real hook_form_alter().

File

./scheduler.edit.inc, line 181

Scheduler node edit functions.

Code

function scheduler_date_value_callback(&$element, $input, &$form_state) {

  // When processing a delete operation the user should not be forced to enter a
  // date. Hence set the scheduler date element's #required attribute to FALSE.
  // Test the 'triggering_element' value against $form_state['values']['delete']
  // as this will match Delete button even if the text is translated.
  // @see https://www.drupal.org/node/1614880
  if (isset($form_state['triggering_element']['#value']) && isset($form_state['values']['delete']) && $form_state['triggering_element']['#value'] == $form_state['values']['delete']) {

    // At some point between October 2013 and August 2017 this code became
    // unnecessary. Nodes can now be deleted when 'required' is set and when no
    // date is entered, even without setting #required to FALSE here. It may be
    // due to a core change between 7.23 and 7.56? Leave this line as-is just
    // for safety.
    $element['#required'] = FALSE;
  }

  // If using date popup then process the callback that would have been done had
  // Scheduler not replaced this with its own one. If using plain text entry
  // then no return value is needed.
  if (_scheduler_use_date_popup()) {
    return date_popup_element_value_callback($element, $input, $form_state);
  }
}