如何在 Mongoose 中设置数据库名称和集合名称？

Question

我正在构建一个连接到 MongoDB-Atlas 的小程序。我创建了一个连接、一个模式、一个模型并创建了一个文档。但不知何故，我的数据库名称是“test”，集合名称是“users”，而我没有在代码或 Atlas 中定义它，这是默认名称吗？以及如何 create/rename 数据库和集合。

代码：

user.js

const mongoose = require('mongoose');
const SchemaObj = mongoose.Schema;
const userSchema = new SchemaObj({
    name : {
        type:String,
        require:true

    },
    email : {
        type:String,
        require:true
    },
    password: {
        type:String,
        require:true
    }
});

mongoose.model('User',userSchema);

app.js

const express = require('express');
const app = express();
const rout = express.Router();
const PORT = 8888;
const {connectionString} = require('./Keys');
const mongoose = require('mongoose');

app.use(express.json());
app.use(require('./routes/auth'));

app.get('/',(req,res)=>{
    console.log('succesfully connected');
    res.send('im in!');
});

let server = app.listen(PORT,'0.0.0.0',()=>{
    let FuncPort = server.address().port
    let host = server.address().address
    console.log("Example app listening at http://%s:%s", host, FuncPort)
});

const client = mongoose.connect(connectionString, {
  useNewUrlParser: true,
  useUnifiedTopology: true
});
    
mongoose.connection.on('connected',()=>{
    console.log('connected to mongodb oh hell yea');
});

mongoose.connection.on('error',()=>{
    console.log('error connecting to mongodb oh hell yea');
});

auth.js

const mongoose = require('mongoose');
const express = require('express');
const route = express.Router();
require('../moduls/User');
const user = mongoose.model("User");

rout.post('/sign',(req,res)=>{
    const {name,password,email} = req.body;
    if(name && password && email) {
        console.log('you god damn right!');
        res.json("you god damn right in response");
    } else {
        console.log('you are god damn wrong stupid idiot!');
        res.status(422);
        res.json("you are god damn wrong you stupid idiot in response");
    }

    user.findOne({email:email}).then((resolve,reject)=>{
        if(resolve)
            return res.status(422).json("user already exist yo");
        
        const newUser = new user({ name, email, password });
        newUser.save().then(() => {
            res.json('saved user!!!!');
        }).catch(err => {
            console.log("there was a problem saving the user")});
        }).catch(err => {  
            console.log(err);
        })
});
module.exports = route;

顺便问一下，mongoose 和 MongoDB 库有什么区别？

Answer 1

要命名您的 mongodb 数据库，您应该将其放在连接字符串中，例如：

mongoose.connect('mongodb://localhost/myDatabaseName');

关于命名您的 collection 或禁用复数，您可以在这里找到答案：

What are Mongoose (Nodejs) pluralization rules?

var schemaObj = new mongoose.Schema(
{
 fields:Schema.Type
}, { collection: 'collection_name'});

Mongoose 是 Object 数据建模 (ODM) 库，用于 MongoDB 和 Node.js。类似于 Sequelize (ORM)，但用于文档 (NoSQL)。

如何在 Mongoose 中设置数据库名称和集合名称？

How to set DB name and Collection name in Mongoose?

mongoose

node.js

mongodb-atlas