Backend : Filtre utilisateur

Pouvoir filtrer les utilisateurs par nom, prenom, telephone, email dans la section "Utilisateurs".

backend/controllers/UserController.php

      */
     public function actionIndex()
     {
-        $dataProvider = new ActiveDataProvider([
-            'query' => 
-                (new \yii\db\Query())
+        
+        $params = Yii::$app->request->queryParams;
+        
+        $query = (new \yii\db\Query())
                 ->select('*')
                 ->from('user, user_etablissement')
                 ->where('user.id = user_etablissement.id_user')
                 ->andWhere('user_etablissement.actif = 1')
-                ->andWhere('user_etablissement.id_etablissement = '.Yii::$app->user->identity->id_etablissement)
+                ->andWhere('user_etablissement.id_etablissement = '.Yii::$app->user->identity->id_etablissement) ;
+        
+        if(isset($params['nom']))
+            $query->andFilterWhere(['like', 'nom', $params['nom']]);
+        if(isset($params['prenom']))
+            $query->andFilterWhere(['like', 'prenom', $params['prenom']]) ;
+        if(isset($params['email']))
+            $query->andFilterWhere(['like', 'email', $params['email']]) ;
+        if(isset($params['telephone']))
+            $query->andFilterWhere(['like', 'telephone', $params['telephone']]) ;
+            
+        $dataProvider = new ActiveDataProvider([
+            'query' => $query
         ]);
         
         $etablissement = Etablissement::find()

backend/views/user/index.php

     
     <?= GridView::widget([
         'dataProvider' => $dataProvider,
+        'filterModel' => true,
         'columns' => [
-            'nom',
-            'prenom',
-            'telephone',
-            'email',
+            [
+                'attribute' => 'nom',
+                'filter' => Html::input(
+                        'string', 
+                        'nom',
+                        isset(Yii::$app->request->queryParams['nom']) ? Html::encode(Yii::$app->request->queryParams['nom']) : '',
+                        [ 'class' => 'form-control']
+                )
+            ],
+            [
+                'attribute' => 'prenom',
+                'filter' => Html::input(
+                        'string', 
+                        'prenom',
+                        isset(Yii::$app->request->queryParams['prenom']) ? Html::encode(Yii::$app->request->queryParams['prenom']) : '',
+                        ['class' => 'form-control']
+                )
+            ],
+            [
+                'attribute' => 'telephone',
+                'filter' => Html::input(
+                        'string', 
+                        'telephone',
+                        isset(Yii::$app->request->queryParams['telephone']) ? Html::encode(Yii::$app->request->queryParams['telephone']) : '',
+                        ['class' => 'form-control']
+                )
+            ],
+            [
+                'attribute' => 'email',
+                'filter' => Html::input(
+                        'string', 
+                        'email',
+                        isset(Yii::$app->request->queryParams['email']) ? Html::encode(Yii::$app->request->queryParams['email']) : '',
+                        ['class' => 'form-control']
+                )
+            ],
             [
                 'attribute' => 'credit',
                 'format' => 'raw',