/**
  * Creates data provider instance with search query applied
  *
  * @param array $params
  *
  * @return ActiveDataProvider
  */
 public function search($params)
 {
     $query = Avaliacao::find();
     $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' => $this->id, 'id_item' => $this->id_item, 'id_avaliado' => $this->id_avaliado]);
     $query->andFilterWhere(['like', 'importancia', $this->importancia])->andFilterWhere(['like', 'satisfacao', $this->satisfacao])->andFilterWhere(['like', 'descricao', $this->descricao]);
     return $dataProvider;
 }
 /**
  * @return \yii\db\ActiveQuery
  */
 public function getAvaliacaos()
 {
     return $this->hasMany(Avaliacao::className(), ['id_avaliado' => 'id']);
 }
 public function actionAvaliar($turma = null)
 {
     if (empty($turma)) {
         $turma = new Turma();
         return $this->render('turma', ['turma' => $turma]);
     } else {
         $avaliacao = new Avaliacao();
         $turma = Turma::findOne(['id' => $turma]);
         $itens = Item::find()->all();
         if (Yii::$app->request->post()) {
             $avaliacao = Yii::$app->request->post('Avaliacao');
             $ok = true;
             foreach ($avaliacao as $a) {
                 $av = new Avaliacao();
                 $av->id_item = $a['id_item'];
                 $av->id_turma = $a['id_turma'];
                 $av->id_avaliado = $a['id_avaliado'];
                 $av->importancia = $a['importancia'];
                 $av->satisfacao = $a['satisfacao'];
                 $av->descricao = $a['descricao'];
                 if (!$av->save()) {
                     return new HttpException(500, 'Houve um erro ao salvar a sua avaliação :\'(');
                 }
             }
             return $this->render('obrigado');
         } elseif ($turma) {
             return $this->render('avaliar', ['itens' => $itens, 'turma' => $turma]);
         } else {
             throw new HttpException(404, 'Turma Inválida :/');
         }
     }
 }