/**
  * Creates data provider instance with search query applied
  *
  * @param array $params
  *
  * @return ActiveDataProvider
  */
 public function search($params)
 {
     $query = InscricaoProvaSala::find();
     $dataProvider = new ActiveDataProvider(['query' => $query]);
     $query->joinWith(['prova', 'sala', 'inscricao']);
     $dataProvider->sort->attributes['sala'] = ['asc' => ['sala.nome' => SORT_ASC], 'desc' => ['sala.nome' => 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(['inscricao_idinscricao' => $this->inscricao_idinscricao, 'prova_idprova' => $this->prova_idprova, 'sala_idsala' => $this->sala_idsala, 'nota' => $this->nota])->andFilterWhere(['like', 'sala.nome', $this->nomesala]);
     return $dataProvider;
 }