App\Ninja\Datatables\VendorDatatable::columns PHP Method

    public function columns()
    {
        return [['name', function ($model) {
            return link_to("vendors/{$model->public_id}", $model->name ?: '')->toHtml();
        }], ['city', function ($model) {
            return $model->city;
        }], ['work_phone', function ($model) {
            return $model->work_phone;
        }], ['email', function ($model) {
            return link_to("vendors/{$model->public_id}", $model->email ?: '')->toHtml();
        }], ['vendors.created_at', function ($model) {
            return Utils::timestampToDateString(strtotime($model->created_at));
        }]];
    }