填充貓鼬模型未回傳預期結果-有解無憂

我有兩個模型 user 和 places 。兩個模型都互相參考。我正在嘗試填充 place 模型，以便當我洗掉 place 時，該位置會從 places 以及用戶模型的 places 陣列中洗掉。Place from Place 模型已成功洗掉，但為什么它沒有從用戶模型的 places 陣列中洗掉。我究竟做錯了什么？

我的代碼：

放置模型


const mongoose = require("mongoose");

const schema = mongoose.Schema;

const placeSchema = new schema({
    title  : {type :String , required :true} ,
    description : {type :String , required :true} ,
    image : {type :String , required :true} ,
    address : {type :String , required :true} ,

    location : {
        lat: {type : Number , required : true} ,
        lng : {type :Number , required : true}
    } ,

    creator : {type :mongoose.Types.ObjectId , required :true , ref :"User"} 
});

module.exports = mongoose.model("Place" , placeSchema);

用戶模型


const mongoose = require("mongoose");
const uniqueValidator = require("mongoose-unique-validator");

const schema = mongoose.Schema;

const userSchema = new schema({
    userName : {type : String , required : true} ,
    email : {type : String , required : true , unique:true} ,
    password : {type : String , required : true , minlength:6} ,
    image :{type : String , required : true} ,
    places : [{type : mongoose.Types.ObjectId , required : true , ref : "Place"}]
});

userSchema.plugin(uniqueValidator);

module.exports = mongoose.model("User" , userSchema);

用于洗掉地點以及從用戶模型的地點陣列中洗掉地點的 api



const deletePlace=async(req, res , next)=>{
    const placeId = req.params.pid;
 
    let place ;

  try
  {
     place = await PLACE.findById(placeId).populate('creator');
  }

  catch(err)
  {
    const error = new Error("SOMETHING WENT WRONG , COULD NOT DELETE PLACE");
    error.code = 500;
    return next(error);
  }

  if(!place)
  {
    const error = new Error("NO PLACE FOUND WITH SUCH ID");
    error.code = 500;
    return next(error);
  }

  try 
  {
    const session = await mongoose.startSession();
    session.startTransaction();
    await PLACE.deleteOne({placeId});
    place.creator.places.pull(place);
    
  }

  catch(err)
  {
    const error = new Error("SOMETHING WENT WRONG , COULD NOT DELETE PLACE");
    error.code = 500;
    return next(error);
  }

  res.status(200).json({message: "PLACE DELETED"});
};

uj5u.com熱心網友回復：

更改創建者物件后，您需要保存它：

place.creator.places.pull(place);
await place.creator.save();

轉載請註明出處，本文鏈接：https://www.uj5u.com/qita/495728.html

標籤：节点.js mongodb 猫鼬猫鼬模式猫鼬人口

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