/**
  * Creates data provider instance with search query applied
  *
  * @param array $params
  *
  * @return ActiveDataProvider
  */
 public function search($params)
 {
     $query = AuditTrail::find();
     $dataProvider = new ActiveDataProvider(['query' => $query]);
     if (!($this->load($params) && $this->validate())) {
         return $dataProvider;
     }
     $query->andFilterWhere(['id' => $this->id, 'stamp' => $this->stamp]);
     $query->andFilterWhere(['like', 'old_value', $this->old_value])->andFilterWhere(['like', 'new_value', $this->new_value])->andFilterWhere(['like', 'action', $this->action])->andFilterWhere(['like', 'model', $this->model])->andFilterWhere(['like', 'field', $this->field])->andFilterWhere(['like', 'user_id', $this->user_id])->andFilterWhere(['like', 'model_id', $this->model_id]);
     return $dataProvider;
 }
 public function leaveTrail($action, $name = null, $value = null, $old_value = null)
 {
     $log = new AuditTrail();
     $log->old_value = $old_value;
     $log->new_value = $value;
     $log->action = $action;
     $log->model = $this->owner->className();
     // Gets a plain text version of the model name
     $log->model_id = (string) $this->getNormalizedPk();
     $log->field = $name;
     $log->stamp = $this->storeTimestamp ? time() : date($this->dateFormat);
     // If we are storing a timestamp lets get one else lets get the date
     $log->user_id = (string) $this->getUserId();
     // Lets get the user id
     return $log->save();
 }
 /**
  * Finds the AuditTrail model based on its primary key value.
  * If the model is not found, a 404 HTTP exception will be thrown.
  * @param integer $id
  * @return AuditTrail the loaded model
  * @throws NotFoundHttpException if the model cannot be found
  */
 protected function findModel($id)
 {
     if (($model = AuditTrail::findOne($id)) !== null) {
         return $model;
     } else {
         throw new NotFoundHttpException('The requested page does not exist.');
     }
 }