具有关系的模式未保存在数据库中

Question

[我正在使用基本操作操作创建一个api，我正在使用mongodb，并且我有1个需要从另一个模式获取信息的模式，我是通过这种方式建立关系的，在第一个shema中我就有了。

const mongoose = require('mongoose');
const { Schema } = mongoose;

const geographicalAreaSchema = new Schema({
    name: {type: String, required: true}
})

module.exports = mongoose.model('GeographicalArea', geographicalAreaSchema);

带有参考的第二个模式

const mongoose = require('mongoose');
const { Schema } = mongoose;

const zooSchema = new Schema({
    name: { type: String, required: true },
    nit: { type: String, required: true },
    geographicalArea: { type: Schema.ObjectId, ref: "GeographicalArea" }
})

module.exports = mongoose.model('Zoo', zooSchema);

在控制器中具有此代码以保存新的动物园

const zoo = require('../models/zoo');
const mongoose = require('mongoose');
const GeographicalArea = mongoose.model('GeographicalArea');
const zooController = {};

zooController.createZoo = async(req, res) => {
    const saveZoo = new zoo({
        name: req.body.name,
        nit: req.body.nit,
        geographicalAreaName: req.body.geographicalArea.name //this item have data
    });
    await saveZoo.save()
    res.json({
        'status': 'Zoo Save'
    })
};

module.exports = zooController;

这是路由器文件

const express = require('express');
const router = express.Router();

const zoo = require('../controllers/zoo.controller');

router.post('/', zoo.createZoo)

module.exports = router;

这是索引文件

const express = require('express');
const morgan = require('morgan');
const app = express();

const { mongoose } = require('./database');

//Settings
app.set('port', process.env.PORT || 3000);

//Middlewares
app.use(morgan('dev'));
app.use(express.json());

//Routes
app.use('/api/geographicalArea', require('./routes/geographicalArea.routes'));
app.use('/api/zoo', require('./routes/zoo.routes'));

//Starting server
app.listen(app.get('port'), () => {
    console.log('Server on port', app.get('port'))
})

当我向邮递员发出这样的请求时

我看req是否带来数据

并且我调试以验证数据是否正确保存，geographicArea的字段返回未定义

我不知道为什么该属性未定义

Answer 1

尝试一下

const mongoose = require('mongoose');
const { Schema } = mongoose;

const zooSchema = new Schema({
name: {type: String, required: true },
nit: { type: String, required: true },
geographicalArea: { type: Schema.Types.ObjectId, ref: "GeographicalArea" }
});

module.exports = mongoose.model('Zoo', zooSchema);

Answer 2

尝试这种方法。

const zoo = require('../models/zoo')
const mongoose = require('mongoose')
const GeographicalArea = mongoose.model('GeographicalArea')
const zooController = {}

zooController.createZoo: async (req, res) => {
    try {
      const zooInfo = {
        name: req.body.name,
        nit: req.body.nit,
        geographicalAreaName: req.body.geographicalArea.name
      }
      const zooSave = await zoo.create(zooInfo)
      console.log(zooInfo)
      zooSave.save()
      res.json({ status: "zoo saved "})
     } catch(error) {
       res.json({ error })
    }
  }

Answer 3

通过从邮递员仅发送我想与动物园相关的geoArea id来解决此问题，这样我就可以获取包含所有信息的对象。

发送数据

    zooController.createZoo = async(req, res) => {
    const saveZoo = new zoo({
        name: req.body.name,
        nit: req.body.nit,
        geographicalArea: req.body.geographicalArea
    });
    await saveZoo.save()
    res.json({
        'status': 'Zoo Save'
    })
};

我确认我得到了数据