Yii2 create multilingual site for ajax search fields

Question

I'm using Yii2 and I want to create a web application with the ability to perform fast searches.
For example, when I type characters in a textbox, results displayed.
It's easy with ajax when we have only one language but how about in multilingual mode?

Answer 1

First set up multi language for your site there is doc for this.

Best way of auto support multi language for your site is using cookies variable for language. You can set up language cookies from any action as

   public function actionLanguage()
{
    if (isset($_POST['lang'])) {
        $language = $_POST['lang'];

        if (($langaugeModel = \app\models\Langauge::findOne(['name' => $language])) !== null) {
            $varLang = [
                    'id' => $langaugeModel->id,
                    'name' => $langaugeModel->name,
                    'iso1' => $langaugeModel->iso1,
                    'iso2' => $langaugeModel->iso2
                ];
            $cookies = new Cookie([
                'name' => 'lang',
                'value' => json_encode($varLang),
            ]);
            yii::$app->getResponse()->getCookies()->add($cookies);
            return $this->goBack((!empty(Yii::$app->request->referrer) ? Yii::$app->request->referrer : null));
        } else {
            throw new NotFoundHttpException('The requested langauge does not exist.');
        }

    } else {
            return $this->goBack((!empty(Yii::$app->request->referrer) ? Yii::$app->request->referrer : null));
    }
}

Here what I did was i placed all the language support of site in database and generate necessary cookies variable and placed it on client browser.

Next set up be before request event of your yii2 site in config/web.php file as

 'as beforeRequest' => [
   'class' => 'app\components\MyBehavior',
],

then create components\Mybehaviou.php file and place this code

  namespace app\components;
  use yii;
  use yii\base\Behavior;
  class MyBehavior extends Behavior
   {
     public function events(){
       return [
           \yii\web\Application::EVENT_BEFORE_REQUEST => 'myBehavior',
         ];
       }
    public function myBehavior(){
    if (\yii::$app->getRequest()->getCookies()->has('lang')) {
        $langIso = 'sdn';
        \yii::$app->language = $langIso;
        $langaugeVar = \yii::$app->getRequest()->getCookies()->getValue('lang');

        $langauge = json_decode($langaugeVar);
        $langIso = $langauge->iso2;

        \yii::$app->language = $langIso;

    }
  }
}

This create your site language which depends on client because it depends on cookies of client.

Then create your search controller according to site language(\yii::$app->language)

for ajax search you can use select2 Widget. you can find demo and configuration on this link