How to fix post method error using ExpressJs and MongoDB - node.js

Question

I'm new in Express.js,MongoDb and mongoose, I have created HTTP request methods, but when running the Post method, nothing is done (nothing saved in the database), and postman still loading and it stops only when I cancel. I want to know what's wrong in my code, thank you .
router.post("/v1/department", async (req, res) => {
try {
const request = req.body
const department = new Department(request)
await department.save()
res.status(200).send(department)
} catch (error) {
res.status(500).send(error)
}
});
This is my model
const mongoose = require("mongoose");
const validator = require('validator')
const Department = mongoose.model('Department', {
name: {
type: String,
required: true,
}
,
email: {
type: String,
required: true,
trim: true,//
lowercase: true,
validate(value) {
if (!validator.isEmail(value)) {
throw new Error('Invalid email!')
}
}
}
,
createdBy: {
type: String,
default: 'SYS_ADMIN'
}
,
updatedBy: {
type: String,
default: 'SYS_ADMIN'
}
,
createdAt: {
type: Date
// ,
// default: Date.getDate()
}
,
updatedAt: {
type: Date
// ,
// default: Date.getDate()
},
isDeleted: {
type: Boolean,
default: false
}
})
module.exports = Department
This is the Index.js
const express = require("express");
const app = express()
const departmentRouter = require("../src/routes/department")
app.use(express.json())
app.use(departmentRouter)
//app.use('/', require('./routes/department'))
const port = process.env.PORT || 5000;//local machine port 3000
app.listen(port, () => (`Server running on local machine port ${port} 🔥`));
The connection to the database is :
const mongoose = require("mongoose");
//Connect to the local mongoDB database for testing the API localy
mongoose.connect('mongodb://127.0.0.1:27017/openemp-api-department', {
useNewUrlParser: true,
useCreateIndex: true
})

Answer 1

You're missing a few things here. Mongoose is never set up in the index.js so there is no connection to the database. This should help you follow step by step
Also in your router you're sending department1 which is never assigned.
If the link doesn't work or you need more information let me know.

Answer 2

For the latest version of Express which is (Express v4.16.0 and higher)
Use this in your server.js file: ----->
const express = require('express');
app.use(express.json());
app.use(express.urlencoded({
extended: true
}));
// For Express version less than 4.16.0
// ------------------------------------
const bodyParser = require('body-parser');
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({
extended: true
}));
otherwise your post request will give you error(like not recognizing any names etc)
so make sure to use these according to to express version
index.js file
const mongoose = require("mongoose");
const express = require("express");
const router = express.Router();
const axios = require("axios");
mongoose.connect(
"YourMongoUri",
{
useNewUrlParser: true,
useUnifiedTopology: true,
}
);
const dataSchema = new mongoose.Schema({
name: {
type: String,
required: true,
},
age: {
type: Number,
required: true,
},
});
const modelData = mongoose.model("modelData", dataSchema);
router.get("/", (req, res) => {
modelData.find((err, doc) => {
if (err) console.log(err.message);
else {
res.send(doc);
}
});
});
router.post("/", (req, res) => {
const user = new modelData({
name: req.body.name,
age: req.body.age,
});
user.save((err, doc) => {
if (err) return console.log(err);
res.send(doc);
});
});
router.put("/:id", (req, res) => {
const user = modelData.findByIdAndUpdate(
req.params.id,
{
name: req.body.name,
age: req.body.age,
},
(err, doc) => {
if (err) return console.log(err);
res.send(doc);
}
);
});
router.delete("/:id", (req, res) => {
modelData.findByIdAndDelete(req.params.id, (err, doc) => {
if (err) return console.log(err);
res.send(doc);
});
});
module.exports = router;
server.js file
const express = require("express");
const myRouter = require("./index");
const app = express();
const port = 3000;
app.use(express.json());
app.use(
express.urlencoded({
extended: true,
})
);
s;
app.use("/myroute", myRouter);
app.listen(port, console.log("listening on port 3000"));