function form_execute_handlers

A helper function used to execute custom validation and submission handlers for a given form. Button-specific handlers are checked first. If none exist, the function falls back to form-level handlers.

Parameters

$type: The type of handler to execute. 'validate' or 'submit' are the defaults used by Form API.

$form: An associative array containing the structure of the form.

$form_state: A keyed array containing the current state of the form. If the user submitted the form by clicking a button with custom handler functions defined, those handlers will be stored here.

Related topics

File

includes/form.inc, line 807

Code

function form_execute_handlers($type, &$form, &$form_state) {
  $return = FALSE;
  if (isset($form_state[$type . '_handlers'])) {
    $handlers = $form_state[$type . '_handlers'];
  }
  elseif (isset($form['#' . $type])) {
    $handlers = $form['#' . $type];
  }
  else {
    $handlers = array();
  }
  foreach ($handlers as $function) {
    if (function_exists($function)) {

      // Check to see if a previous _submit handler has set a batch, but
      // make sure we do not react to a batch that is already being processed
      // (for instance if a batch operation performs a drupal_execute()).
      if ($type == 'submit' && ($batch =& batch_get()) && !isset($batch['current_set'])) {

        // Some previous _submit handler has set a batch. We store the call
        // in a special 'control' batch set, for execution at the correct
        // time during the batch processing workflow.
        $batch['sets'][] = array(
          'form_submit' => $function,
        );
      }
      else {
        $function($form, $form_state);
      }
      $return = TRUE;
    }
  }
  return $return;
}