updated code on 11 sep

.env

@@ -0,0 +1,2 @@
+MONGO_URI: "mongodb+srv://rjReactDev:Deadrjs%[email protected]/?retryWrites=true&w=majority";
+PORT:4040

app.js

@@ -1,12 +1,50 @@
-const port = 4040
+
 const express = require('express')
 const app = express()
 const morgan = require('morgan')
+const env = require('dotenv')
+const mongoose=require('mongoose')
+const { MongoClient, ServerApiVersion } = require('mongodb');
+env.config()
+const port = process.env.PORT || 4040
+const uri ="mongodb+srv://rjReactDev:[email protected]/?retryWrites=true&w=majority";
+
+//db connection 
+// mongoose.connect(uri)
+// .then(()=>console.log('Db connected.'))
+// mongoose.connection.on('error',err=>{
+//   console.log(`db connection has some error: ${err.message}`)
+// })
+
+const client = new MongoClient(uri, {
+  serverApi: {
+    version: ServerApiVersion.v1,
+    strict: true,
+    deprecationErrors: true,
+  }
+});
+async function run() {
+  try {
+    // Connect the client to the server	(optional starting in v4.7)
+    await client.connect();
+    // Send a ping to confirm a successful connection
+   // await client.db("admin").command({ ping: 1 });
+    console.log("Pinged your deployment. You successfully connected to MongoDB!");
+  } finally {
+    // Ensures that the client will close when you finish/error
+    await client.close();
+  }
+}
+run().catch(console.dir);
 
 //const postRoutes =require('./routes/post')
 
 //using destructuring method 
-const { getPosts } = require('./routes/post')
+//const { getPosts } = require('./routes/post')
+
+//app.get("/", getPosts)
+//using controller
+const postRouter = require('./routes/post')
 
 // const myOwnMiddleWare = (req, res, next) => {
 //     console.log("my own ")
@@ -17,7 +55,8 @@ const { getPosts } = require('./routes/post')
 
 app.use(morgan('dev'))
 
-app.get("/", getPosts)
+app.use("/", postRouter)
+
 app.listen(port, () => [
     console.log(`Server listening on port : ${port}`)
 ])

controllers/post.js

@@ -0,0 +1,8 @@
+exports.getPosts = (req, res) => {
+    // res.send('<h1>Welcome to Node js Server</h1>')
+
+    //need to json return as response 
+    res.json({
+        posts: [{ title: 'ReactJs' }, { title: 'Redux' }, { title: 'Javascript' }, { title: 'node' }]
+    })
+}