TypeError: Organizations.find is not a function

Question

TypeError: Organizations.find 不是函数在 C:\Users\dillo\Desktop\UWI\ECNG 3020 最后一年 Project\Damage_Assessment _Tool\routers\OrganizationsRouters.js:11:23

我似乎看不出有什么问题。为了简单起见，我将我的路线分成不同的文件，但我一直遇到这个错误“TypeError：Organizations.find 不是一个函数”

路由文件包含所需的路由： OrganizationsRouter.js

const express = require('express')
const router = new express.Router();
const { mongoose } = require ('../db/mongoose');

const Organizations = require('../db/models/Organizations.model')

//Routes for Organizations
router.get('/Organizations', (req,res) => {
    //return an array of all the damage assessments made that is stored on the database.
    Organizations.find({}).then((organization) => {
        res.send(organization);
    }).catch((e) => {
        res.send(e);
    });
})
router.post('/Organizations', (req,res) => {
    //create a damage assessment report and save to the database
    let organizationName = req.body.organizationName;
    let newOrganization = new Organizations({
        organizationName
    });
    newOrganization.save().then((OrganizationDoc) => {
        //the full Organization document is returned (including id)
        res.send(OrganizationDoc);
    })
});
router.patch('/Organizations/:id', (req,res) => {
    //update the Organization specified
    Organizations.findOneAndUpdate({_id: req.params.id},{
        $set: req.body
    }).then(() => {
        res.send({'message' : "Updated Successfully"});
    });
});
router.delete('/Organizations/:id', (req,res) => {
    //delete the Organization specified
    Organizations.findOneAndRemove({
        _id: req.params.id
    }).then((removeOrganizationDoc) => {
        res.send(removeOrganizationDoc);
    })
});

module.exports = router

App.js 是主索引文件： App.js

const express = require('express');
const app = express();
const { mongoose } = require ('./db/mongoose');
const bodyParser = require ('body-parser');

const res = require('express/lib/response');

/*Load Middleware*/
app.use(bodyParser.json());

//Import Routers
const organizationRouter = require('./routers/OrganizationsRouters')

//Register Router
app.use(organizationRouter)


//Listening to the server on port 3000
app.listen(3000,()=>{
    console.log("Listening to port 3000");
})

Organizations.model.js 是猫鼬模式： Organizations.model.js

const mongoose = require('mongoose');

const OrganizationsSchema = new mongoose.Schema({
    organizationName:{
        type: String,
        required: true,
        minlength:1,
        trim: true
    }
})

    
const Organizations = mongoose.model( 'Organizations', OrganizationsSchema);

module.exports =  {Organizations}

Answer 1

估计这两行有问题

const { mongoose } = require ('../db/mongoose');
const Organizations = require('../db/models/Organizations.model')

在某些时候应该有 mongoose.createConnection 调用以及 connection.model('Organisations', '../db/models/Organizations.model') 然后

router.get('/Organizations', (req,res) => {
    Organizations.find(
        {"name": "blah"},
        (err, docs) => {
            if(err) {
                res.send(err)
            } else {
                res.send(docs)
            }
        }
    )
})

Answer 2

去运行我的书面调试..

TypeError: Organizations.find is not a function

那么什么是组织...

const Organizations = require('../db/models/Organizations.model')

它被标记为模型...您需要创建它的实例吗？还是使用 ORM 工具进行查找而不是在模型上调用查找？什么是组织。

const Organizations = mongoose.model( 'Organizations', OrganizationsSchema);

...好吧，我们有猫鼬...我以前没用过它，假设它是一个 orm 或一些包而不是功能...它是...所以我们需要/有一个连接到吗？我认为不是 - 所以也许我们需要创建一个连接？

https://mongoosejs.com/docs/connections.html

你的详细信息是这样的。

mongoose.connect('mongodb://localhost:27017/myapp');

Answer 3

尝试将OrganizationsRouter.js中模型的导入改成：

const { Organizations } = require('../db/models/Organizations.model')

Answer 4

所以我想通了问题。

    const mongoose = require('mongoose');

const OrganizationsSchema = new mongoose.Schema({
    organizationName:{
        type: String,
        required: true,
        minlength:1,
        trim: true
    }
})

    
const Organizations = mongoose.model( 'Organizations', OrganizationsSchema);

module.exports =  Organizations;

通过删除“组织”猫鼬模式周围的括号，它工作正常。

TypeError: Organizations.find is not a function

TypeError: Organizations.find is not a function

javascript

routes

mongoose

node.js

mean-stack