How to properly organize the output in the Select2 yii2 card?

Question

Yii

Please tell me how to correctly display the results with spaces. Here is the code:

echo Select2::widget([
            'id'=>'pacients',
            'name' => 'kv_theme_select2',
            'initValueText' =>'', // set the initial display text
            'theme' =>  Select2::THEME_CLASSIC, // this is the default if theme is not set
            'options' => ['placeholder' => 'Поиск пациента'],
            'pluginOptions' => [
                'minimumInputLength' => 7,
                'allowClear' => true,
                'ajax' => [
                    'url' => $url,
                    'dataType' => 'json',
                    'data' => new JsExpression('function(params) { return {q:params.term}; }')
                ],
                'escapeMarkup' => new JsExpression('function (markup) { return markup; }'),
                'templateResult' => new JsExpression('function(user) { return  user.surname +user.name +user.fathername +  user.birthday;}'),
                'templateSelection' => new JsExpression('function (pacients) { return pacients.surname+pacients.name+pacients.fathername+pacients.birthday;}'),
            ],
        ]);

        ?>

When entering initials, a search occurs. But the select displays data without spaces. I would like that when entering, the full data would be displayed, and when choosing, the surname and initials would already be displayed.
Here's what it looks like now

Answer 1

You set the format yourself:
What prevents a space from being inserted
user.surname + ' ' + user.name