Encore\Admin\Grid\Filter\Field\DateTime::prepare PHP Method

    public function prepare()
    {
        $options['format'] = 'YYYY-MM-DD HH:mm:ss';
        $options['locale'] = config('app.locale');
        $script = "\$('#{$this->filter->getId()}').datetimepicker(" . json_encode($options) . ');';
        Admin::script($script);
    }