How to set DB name and Collection name in Mongoose? - node.js

Question

I'm building a small program that connects to MongoDB-Atlas.
I created a connection, a Schema, a Model and created a document.
but somehow my DB name is "test" and Collection name is "users" without me defined it in the code or in Atlas, is that the default names? and how to create/rename a DB and a collection.
the code :
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;
By the way, what is the difference between mongoose and MongoDB libraries?

Answer 1

For naming your mongodb database, you should place it in your connection string, like:
mongoose.connect('mongodb://localhost/myDatabaseName');
For naming your collection or disabling pluralization, you can find the answer here:
What are Mongoose (Nodejs) pluralization rules?
var schemaObj = new mongoose.Schema(
{
fields:Schema.Type
}, { collection: 'collection_name'});
Mongoose is an Object Data Modeling (ODM) library for MongoDB and Node.js. Similar to Sequelize (ORM) but for documents (NoSQL).

Answer 2

MONGODB_URI = mongodb+srv://name:#next.txdcl.mongodb.net/(ADD NAME DB)?retryWrites=true&w=majority
You can just add name what you want ( ADD NAME ) and delete test db and reloa

Answer 3

Approach 1
const url = "mongodb://127.0.0.1:27017/DatabaseName"
mongoose.connect(url).then(() => {
console.log("Connected to Database");
}).catch((err) => {
console.log("Not Connected to Database ERROR! ", err);
});
Approach 2
const url = "mongodb://127.0.0.1:27017"
mongoose.connect(url,{
dbName: 'DatabaseName',
}).then(() => {
console.log("Connected to Database");
}).catch((err) => {
console.log("Not Connected to Database ERROR! ", err);
});

Answer 4

This is how I change my DB name
Before
mongodb+srv://username:<password>#clustername.abc.mongodb.net/?retryWrites=true&w=majority
after you get your API key you can add 1 more path (/) before the query (?) and that path will be your DB name automatically
the example: I add my DB name as
my-new-db-name
after
mongodb+srv://username:<password>#clustername.abc.mongodb.net/my-new-db-name?retryWrites=true&w=majority