Encore\Admin\Grid\Filter\AbstractFilter::buildCondition PHP Method

    protected function buildCondition()
    {
        $column = explode('.', $this->column);
        if (count($column) == 1) {
            return [$this->query => func_get_args()];
        }
        return call_user_func_array([$this, 'buildRelationCondition'], func_get_args());
    }