public function actionView($id)
 {
     $model = Posts::find()->where(['id' => $id])->asArray()->with('user')->one();
     $models[0] = Posts::find()->where('id < ' . $model['id'])->select(['id', 'title'])->orderBy('id DESC')->asArray()->one();
     $models[1] = Posts::find()->where('id > ' . $model['id'])->select(['id', 'title'])->orderBy('id ASC')->asArray()->one();
     if (empty($model)) {
         throw new NotFoundHttpException('Такой страницы не существует');
     }
     return $this->render('view', ['model' => $model, 'models' => $models]);
 }
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 /**
  * Creates data provider instance with search query applied
  *
  * @param array $params
  *
  * @return ActiveDataProvider
  */
 public function search($params)
 {
     $query = Posts::find()->with('user');
     $query->joinWith('user');
     // add conditions that should always apply here
     $dataProvider = new ActiveDataProvider(['query' => $query, 'sort' => ['defaultOrder' => ['id' => SORT_DESC]]]);
     $dataProvider->sort->attributes['user'] = ['asc' => ['user.' . \Yii::$app->controller->module->userField => SORT_ASC], 'desc' => ['user.' . \Yii::$app->controller->module->userField => SORT_DESC]];
     $this->load($params);
     if (!$this->validate()) {
         // uncomment the following line if you do not want to return any records when validation fails
         // $query->where('0=1');
         return $dataProvider;
     }
     $query->andFilterWhere(['like', 'title', $this->title]);
     $query->andFilterWhere(['like', \Yii::$app->controller->module->userField, $this->user]);
     return $dataProvider;
 }
 /**
  * Finds the Posts model based on its primary key value.
  * If the model is not found, a 404 HTTP exception will be thrown.
  * @param integer $id
  * @return Posts the loaded model
  * @throws NotFoundHttpException if the model cannot be found
  */
 protected function findModel($id)
 {
     if (($model = Posts::findOne($id)) !== null) {
         return $model;
     } else {
         throw new NotFoundHttpException('The requested page does not exist.');
     }
 }