What is the correct syntax for displaying MongoDB images in my MERN frontend using multer?

I am trying to make a get request to receive the posts that exist in my MongoDB. I am using multer middleware and am struggling to display the images in the frontend.

My backend code looks like:
(posts.js)

import express from "express";
import multer from "multer";
import Posts from "../models/posts.js";
const storage = multer.diskStorage({
destination: function (req, file, cb) {
cb(null, "uploads/");
},
filename: function (req, file, cb) {
cb(null, Date.now() + "-" + file.originalname);
},
});
const upload = multer({ storage: storage });
const router = express.Router();
router.route("/create").post(upload.single('file'), async (req,res)=>{
try {
const post = new Posts({
title: req.body.title,
description: req.body.description,
amt: req.body.amt,
artist_name: req.body.artist_name,
// Use fileType instead of req.body.type
art_image: req.file.filename,
});
const savedPodcast = await post.save();
res.status(201).json(savedPodcast);
} catch (err) {
console.error(err);
res.status(500).json({ message: "Internal server error" });
}
});
router.route("/feed").get( async (req, res) => {
try {
const getPosts = await Posts.find();
console.log(getPosts)
res.json(getPosts);
} catch (error) {
res.status(500).json({ message: "Error fetching posts", error });
}
});
export default router

This code is tied to app.use('/feed', feedRoute) and gets called. My get request retrieves the data in my database correctly as:

[
{
_id: new ObjectId("6479438fdf4ff1fc5cf2eab8"),      
artist_name: 'sad',
title: 'gfds',
description: 'adf',
amt: '234',
reportCount: 0,
upvote: 0,
createdAt: 2023-06-02T01:19:02.297Z,
art_image: '1685668751687-event_juntion.png',       
apply_watermark: true,
__v: 0
}
]

However, I am not able to understand how to use the art_image file path to display it in front end. What should I write in the src of the img tag?

You need to serve uploaded files from the server.

You could serve entire uploads folder as a static folder:

app.use(express.static(path.join(__dirname, 'uploads')));

and then add art_image value to the src:

<img src="1685668751687-event_juntion.png" />

(you can also add a virtual path):

app.use('/images', express.static(path.join(__dirname, 'uploads')));

<!-->
<img src="images/1685668751687-event_juntion.png" />

<br/>

Or, you could serve each file with sendFile upon each request, by adding a new route, which would take file name via req.params, and that approach wouldn't make the whole uploads folder accessible:

app.get("/images/:image", (req, res) => {
res.sendFile(path.join(__dirname, 'uploads', req.params.image));
});

<!-->

<img src="images/1685668751687-event_juntion.png" />

See more which option would suit you:

https://stackoverflow.com/questions/31425284/express-static-vs-res-sendfile