無法findOne後更新架構內的架構

Question

嗨，我試圖更新我的FoodSchema這是我的POST請求裏面這裏我的店模式中是我的架構：

//Create food schema 
const FoodSchema = new Schema ({ 
    nameOfFood: String, 
    numOfVotes: Number, 
}); 

//Create restaurant schema 
const RestaurantSchema = new Schema ({ 
    nameOfRest: String, 
    favoriteFoods:[FoodSchema], 
}); 

我試圖更新食品在else語句中發現它找到餐廳，並且我能夠訪問.then方法內的restdata中的數據時，它不會推送新餐館。我試圖完成的目標是，如果它找到了餐廳，我更新它的食品模式。

router.post('/votes', function(req,res) 
{ 

    //Parse the data. 
    var newString = toTitleCase(req.body.restaurant); 

    Restaurant.findOne({nameOfRest:newString}).then(function(restdata) 
    { 

     //If can't find restaurant, redirect to vote page again. 
     if(!restdata) 
     { 
      console.log("Undefined"); 
      res.redirect('/votes'); 
     } 
     //Restaurant is found 
     //If the food can't be found create and push a new array with one vote. 
     //If you can find the food, then just update and add a vote. 
     else 
     { 

      if(restdata.favoriteFoods.length==0) 
      { 
       restdata.favoriteFoods.push({nameOfFood:req.body.food,numOfVotes:1}); 
      } 
      else 
      { 
       restdata.favoriteFoods.numOfVotes++; 
      } 
     } 
    }); 
}); 

更進一步我測試這個代碼：

restdata.favoriteFoods.push({nameOfFood:req.body.food,numOfVotes:1}); 

然而，當我試圖推動它，這是行不通的。我正在考慮使用findOneAndUpdate，但我不確定這是否是最好的選擇。有任何想法嗎？

Answer 1

好吧我解決了它：這不是最有效的方法，但仍然是這樣。我使用了Talha的保存方法。

//votes POST route 
router.post('/votes', function(req,res) 
{ 

    //Parse the data. 
    var newString = toTitleCase(req.body.restaurant); 

    Restaurant.findOne({nameOfRest:newString}).then(function(restdata) 
    { 

     //If can't find restaurant, redirect to vote page again. 
     if(!restdata) 
     { 
      console.log("Undefined"); 
      res.redirect('/votes'); 
     } 
     //Restaurant is found 
     //If the food can't be found create and push a new array with one vote. 
     //If you can find the food, then just update and add a vote. 
     else 
     { 
      //Parse the food string data. 
      var newFoodString = toTitleCase(req.body.food); 

      //If there's no food data, initialize it. 
       if(restdata.favoriteFoods.length===0) 
       { 
       restdata.favoriteFoods.push({nameOfFood:newFoodString,numOfVotes:1}); 

       restdata.save().then(function(data){ 
        console.log(data); 
       }); 
       } 
       else 
       { 
       var flag = false; 
       for(var count = 0; count < restdata.favoriteFoods.length; count++) 
       { 
        //If you can find the food. Just add a vote. 
        if(restdata.favoriteFoods[count].nameOfFood==newFoodString) 
        { 
         flag = true; 

         restdata.favoriteFoods[count].numOfVotes++; 

         restdata.save().then(function(data){ 
          console.log(data); 
         }); 

        } 

       } 
       //Otherwise push it as a new food. 
       if(!flag) 
       { 
        restdata.favoriteFoods.push({nameOfFood:newFoodString,numOfVotes:1}); 

        restdata.save().then(function(data){ 
         console.log(data); 
        }); 
       } 
       } 

     } 
    }); 
}); 

    return router; 
}