function views_ui_add_limited_validation

Processes a non-JS fallback submit button to limit its validation errors.

File

includes/admin.inc, line 615

Code

function views_ui_add_limited_validation($element, &$form_state) {
    // Retrieve the AJAX triggering element so we can determine its parents. (We
    // know it's at the same level of the complete form array as the submit
    // button, so all we have to do to find it is swap out the submit button's
    // last array parent.)
    $array_parents = $element['#array_parents'];
    array_pop($array_parents);
    $array_parents[] = $element['#views_ui_ajax_data']['trigger_key'];
    $ajax_triggering_element = drupal_array_get_nested_value($form_state['complete form'], $array_parents);
    // Limit this button's validation to the AJAX triggering element, so it can
    // update the form for that change without requiring that the rest of the
    // form be filled out properly yet.
    $element['#limit_validation_errors'] = array(
        $ajax_triggering_element['#parents'],
    );
    // If we are in the process of a form submission and this is the button that
    // was clicked, the form API workflow in form_builder() will have already
    // copied it to $form_state['triggering_element'] before our #process
    // function is run. So we need to make the same modifications in $form_state
    // as we did to the element itself, to ensure that #limit_validation_errors
    // will actually be set in the correct place.
    if (!empty($form_state['triggering_element'])) {
        $clicked_button =& $form_state['triggering_element'];
        if ($clicked_button['#name'] == $element['#name'] && $clicked_button['#value'] == $element['#value']) {
            $clicked_button['#limit_validation_errors'] = $element['#limit_validation_errors'];
        }
    }
    return $element;
}