/**
  * Creates data provider instance with search query applied
  *
  * @param array $params
  *
  * @return ActiveDataProvider
  */
 public function search($params)
 {
     if (Yii::$app->user->identity->rol_id == 2) {
         $query = Preventivas::find();
     } else {
         $query = Preventivas::find()->joinWith('idEquipo')->where(['id_area' => Yii::$app->user->identity->id_departamento]);
     }
     $dataProvider = new ActiveDataProvider(['query' => $query]);
     $this->load($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(['id_preventica' => $this->id_preventica, 'id_equipo' => $this->id_equipo, 'fecha_inicio' => $this->fecha_inicio, 'dias' => $this->dias, 'estado' => $this->estado]);
     return $dataProvider;
 }