schmunk42\giiant\generators\crud\providers\core\CallbackProvider::appendActiveField PHP Method

    public function appendActiveField($attribute, $model, $generator)
    {
        $key = $this->findValue($this->getModelKey($attribute, $model), $this->appendActiveFields);
        if ($key) {
            return $this->appendActiveFields[$key]($attribute, $model, $generator);
        }
    }