/**
  * @return \yii\db\ActiveQuery
  */
 public function getVisitors0()
 {
     return $this->hasMany(Visitor::className(), ['last_activity_visited_page_id' => 'id']);
 }
 /**
  * @return \yii\db\ActiveQuery
  */
 public function getVisitor()
 {
     return $this->hasOne(Visitor::className(), ['id' => 'visitor_id']);
 }