function Tableselect::valueCallback

Overrides Table::valueCallback

File

core/lib/Drupal/Core/Render/Element/Tableselect.php, line 84

Class

Tableselect

Provides a form element for a table with radios or checkboxes in left column.

Namespace

Code

public static function valueCallback(&$element, $input, FormStateInterface $form_state) {
    // If $element['#multiple'] == FALSE, then radio buttons are displayed and
    // the default value handling is used.
    if (isset($element['#multiple']) && $element['#multiple']) {
        // Checkboxes are being displayed with the default value coming from the
        // keys of the #default_value property. This differs from the checkboxes
        // element which uses the array values.
        if ($input === FALSE) {
            $value = [];
            $element += [
                '#default_value' => [],
            ];
            foreach ($element['#default_value'] as $key => $flag) {
                if ($flag) {
                    $value[$key] = $key;
                }
            }
            return $value;
        }
        else {
            return is_array($input) ? array_combine($input, $input) : [];
        }
    }
}