CODEWITHSUNDEEP
javascriptnode.jsexpressmodel-view-controllermiddleware
aswathsrimari
aswathsrimari

Reputation: 1

localhost doesn't output the JSON for Router and controller i used

I have just started to learn NodeJS and I am stuck with this. I am trying to handle the request. The localhost keeps loading or throws an error

cannot GET/

The JSON code needs to be displayed on my localhost site. What changes to routes or controllers should I make?

Here is the app.js file that calls the router to handle the request.

app.js 

const express=require("express");
const app=express();

const Postroutes=require('./routes/post');

app.use("/" , Postroutes);

const port=8000;
app.listen(port, ()=>{
    console.log(`a node js api is listening on port ${port}`);
});

the routes will forward the request to the controller.

routes/post.js


const express= require("express")
const PostController=require('../controllers/post')

const router=express.Router()

router.get("/",PostController.getPosts);

module.exports= router;

The controller will respond with the JSON.

controllers/post.js

exports.getPosts= (req,res)=>{
    res.json=({
        posts:
            [
                {title:"First Post"},
                {title:"Second Post"}

            ]
    });
};

Upvotes: 0

Views: 163

Answers (3)

Oliver Karstoft
Oliver Karstoft

Reputation: 39

As both Abhishek and lolmc mentioned res.json({...}) should do the trick. res is an object with methods. These methods responds to the HTTP request.

res is short for response. e.g. res.json({ message: 'This is a test message.' }) to reply to a HTTP request with json.

See this post on stackoverflow where Dave Ward explains req and res and read the docs for res and the docs for req to learn more.

Upvotes: 0

lolmc
lolmc

Reputation: 11

In controllers/post.js

Try res.json({...}); instead res.json=({...});

Upvotes: 1

Abhishek
Abhishek

Reputation: 380

This can be use inside your controllers/post.js

exports.getPosts= (req,res)=>{
    const json = {
        posts:
            [
                {title:"First Post"},
                {title:"Second Post"}

            ]
    };
    res.send(json);
};

Or use res.json({ ... }) as per @lolmc answer.

More about response for different format -> Express API Ref

Upvotes: 1

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