Question

我有一个用户的索引路径。我需要计算他们在子文档中的记录。这是我的索引路线：

router.get('/', middleware.isLoggedIn, (req, res, next) => {
  // get all users from db
  User
    .find({})
    .populate('gifts')
    .exec(function (err, allUsers) {
      if (err) {
        req.flash('error', err.message);
      }

      res.render('users/index', {
        users: allUsers,
        title: 'Users',
        breadcrumbsName: 'Users'
      });
    });
});

我正在使用.populate，因为我理解它就像一个内部联接。所以在我的ejs中我想做一些像Total Gifts，以及所有giftAmount的总和。这是我的giftSchema

const schema = new Schema({
  user: {
    type: Types.ObjectId,
    ref: 'User',
    required: true,
    index: true
  },
  ..
  giftAmount: Types.Number,
  ..
});

我这样做是否正确？我错过了什么？

更新。我正在更新文档以按请求获得用户架构。

const
  mongoose = require('mongoose'),
  Schema = mongoose.Schema,
  Types = Schema.Types,
  passportLocalMongoose = require('passport-local-mongoose');

const paymentPreference = {
    paypalEmail:Types.String,
    check: {
      addressLine1: Types.String,
      addressLine2: Types.String,
      city: Types.String,
      state: Types.String,
      zipCode: Types.String
    }
};

let UserSchema = new mongoose.Schema({
  firstName: Types.String,
  lastName: Types.String,
  aliasFirstName: Types.String,
  aliasLastName: Types.String,
  username: Types.String,
  phone: Types.String,
  password: Types.String,
  isAdmin: Types.Boolean,
  addressLine1: Types.String,
  addressLine2: Types.String,
  city: Types.String,
  state: Types.String,
  zipCode: Types.Number,
  profilePic: {
    type: Types.String,
    default: 'https://s.gravatar.com/avatar/0a07df079fd7a07e4cd0e5668835296c?s=80'
  },
  preferredPaymentMethod: {
    type: Types.String,
    enum: ['', 'paypal', 'check', 'deposit'],
    default: ''
  },
  paymentPreference: {
    type: paymentPreference
  },
  lastLoginDate: {
    type: Date,
    default: Date.now
  }
});

UserSchema.plugin(passportLocalMongoose);

module.exports = mongoose.model('User', UserSchema);

Answer 1

我可以做的是所谓的虚拟类型，并使用getter将其返回给我的模型！

UserSchema.virtual('giftCount').get(function () {
  return this.gifts.length;
});

如何计算express中子文档中的用户记录

1 个答案: