Question

我正在尝试使用node js（Express）和mongo DB在两个表（Group和Movement表）之间建立一种One-To-Many关系。我已经有一个group Id来自我方的分组表，我的问题是，如何保存带有我的group Id的动作（请参阅第3点）。我尝试通过groupId: req.body.group._id并 groupId: req.body.group，但我永远无法填充该变量

这是我创建的两个实体：

1）组实体

const mongoose = require("mongoose")

const GroupSchema = mongoose.Schema({
    name: {
        type: String,
        required: true
    },
    limit: {
        type: String,
        required: true
    },

    date: {
        type: Date,
        default: Date.now
    },
    movement: [{ type: mongoose.Schema.Types.ObjectId, ref: 'Movement' }],
    user: { type: mongoose.Schema.Types.ObjectId, ref: 'User' }
})

module.exports = mongoose.model("Group", GroupSchema)

2）运动实体

const mongoose = require("mongoose")

const MovementSchema = mongoose.Schema({
    description: {
        type: String,
        required: true
    },
    value: {
        type: String,
        required: true
    },
    date: {
        type: Date,
        default: Date.now
    },
    group: { type: mongoose.Schema.Types.ObjectId, ref: 'Group' }
})

module.exports = mongoose.model("Movement", MovementSchema)

这是我做端点的移动路由器（实际问题在这里）

3）运动路线

const router = require('express').Router();
const verify = require('./verifyToken');
const User = require('../model/User');
const Group = require('../model/Group');
const Movement = require('../model/Movement');

// Create Movement
router.post('/', verify, async (req, res) => {
    const post = new Movement({
        description: req.body.description,
        value: req.body.value,
        groupId: req.body.group._id //**tried this**
    });

    try {
        const savedMovement = await post.save()
        res.status(200).send(res.json({ data: savedMovement }));
    } catch (error) {
        res.status(400).send(res.json({ message: error }));
    }
});

module.exports = router;

请求已发送

{
    "description":"group1",
    "value":"233",
    "group":"5e506f3c56233d08f79bc8f3"
}

Answer 1

如果console.log(req.body)为您提供了此信息：

{ 
    description: 'group1', 
    value: '233', 
    group: '5e506f3c56233d08f79bc8f3' 
}

..您应该能够做到这一点：

router.post('/', verify, async (req, res) => {
    console.log(req.body) // --> { description: 'group1', value: '233', group: '5e506f3c56233d08f79bc8f3' } 

    const post = new Movement({
        description: req.body.description,
        value: req.body.value,
        groupId: req.body.group
        // groupId: req.body.group._id //**tried this**
    });

    try {
        const savedMovement = await post.save()
        res.status(200).send(res.json({ data: savedMovement }));
    } catch (error) {
        res.status(400).send(res.json({ message: error }));
    }
});

如何将ObjectId传递到POST请求中？

1 个答案: