MongoDb 关系不与其他关系

Question

我正在用 node.js 写一本烹饪书。我是这种语言和 mongoDB 概念的新手。我确定我需要一个拥有最喜欢的食谱和最喜欢的食谱的用户我要存储食谱

我的模型看起来像那样，这里有问题

const mongoose = require('mongoose');
const Schema = mongoose.Schema;

userSchema = new Schema({
  name: String,
  userId: {type: String, required: true},
  favorites: [{
    type: Schema.Types.ObjectId,
    ref: 'Favorites',
  }],
});

favoritesSchema = new Schema({
  name: String,
  id: {type: Schema.Types.ObjectId},
  recipes: [{
    type: Schema.Types.ObjectId,
    ref: 'Recipes',
  }],
  startOfRecipe: {type: Date},

});

recipeSchema = new Schema({
  name: {type: String, unique: true},
});


const User = mongoose.model('User', userSchema);
const Favorites = mongoose.model('Favorites', favoritesSchema);
const Recipes = mongoose.model('Recipes', recipeSchema);
module.exports = {User, Favorites, Recipes};

我写了一个寻找用户然后存储喜欢的食谱的函数

  addFav(fav, userId) {
    return new Promise(function(resolve, reject) {
      schema.User.findOne({userId: userId}, function(err, user) {
        if (err || !user) {

        } else {
          schema.Favorites.create({
            name: fav,
          }, (err, result) => {
            if (err) throw err;
            console.log(result);
            resolve('noResult');
          });

          resolve(user);
        }
      });
    });
  }

它会保存，但如果我打电话给我的用户，数组收藏夹总是空的

{ favorites: [],
  _id: 5cb32867d2dfea0cadd79ecb,
  name: 'Anna',
  userId:
   'AF322',
  __v: 0 }

我做错了什么？有人可以帮我吗:)

Answer 1

请检查以下代码。我创建了favorites 和recipes 的子模式，使用userId 获取用户详细信息并将favorites 对象推入favorites 字段

const mongoose = require('mongoose');
const Schema = mongoose.Schema;

userSchema = new Schema({
  name: String,
  userId: {type: String, required: true},
  favorites: [favoritesSchema],
});

favoritesSchema = new Schema({
  name: String,
  id: {type: Schema.Types.ObjectId},
  recipes: [recipeSchema],
  startOfRecipe: {type: Date},

});

recipeSchema = new Schema({
  name: {type: String, unique: true},
});


const User = mongoose.model('User', userSchema);

addFav(fav, userId) {
    return Schema.User.update({_id:userId}, {$set:{$push:{favorites:fav}}})
}