使用 Mongoose 填充嵌套数组

Question

我有一个如下所示的用户架构，我正在尝试填充实时项目数组，但我不知道如何访问它。

const userSchema = new Schema({
  local: {
    email: String,
    username: String,
    password: String,
    liveProjects: [{
      type: mongoose.Schema.Types.ObjectId,
      ref: 'liveProject'
    }]
  },
  google: {
    googleId: String,
    email: String,
    username: String,
    liveProjects: [{
      type: mongoose.Schema.Types.ObjectId,
      ref: 'liveProject'
    }]
  }
});

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

如果没有嵌入我可以直接使用

User.findById(id).populate('liveProjects').exec((err,projects)=>{});

但是我如何才能访问 'local.liveProjects' 或 'google.liveProjects' 以便填充它们？

Answer 1

此处的用户架构

 `let UserSchema = new Schema({
    email: {
        type: String,
        unique: true,
        required: true
    },
    password: {
        type: String,
        required: true
    },
    profile: {
        firstName: {type: String,required: true},
        lastName: {type: String,required: true},
        address1: {type: String},
        address2: {type: String},
        city: {type: String},
        state: {type: String},
        zip: {type: String},
        phone: {type: String,required: true},
        avatar:{ type: Schema.Types.ObjectId, ref: 'Avatar'},
        shippingAddress:{
            address1: {type: String},
            address2: {type: String},
            city: {type: String},
            state: {type: String},
            zip: {type: String}
        },
    },
    redemptionCards : [{ type: Schema.Types.ObjectId, ref: 'CardCodes' }]
});`

获得兑换卡的逻辑：-

User.findOne({ email }).populate("redemptionCards")
            .exec(function (err, user) {
                CardData.populate(user.redemptionCards, {path: 'redemptionCards',match: { _id: { $ne: null }}}, function (err, cards) {
    console.log(cards);
});

仅供参考 - CardData 是硬编码的 JSON 文件。希望这有帮助。

Answer 2

事实证明它就像

一样简单

User.findById(id).populate('local.liveProjects').exec((err,projects)=>{});

使用 Mongoose 填充嵌套数组

Populate nested array with Mongoose

mongoose

mongodb

node.js

mongoose-populate