Multer Doesn't Save Images on Disk In Any Way - node.js

Question

It simply doesn't save anything to the destination folder i specified.
i tried {storage:storage} instead of {dest: 'storage/'} but it didn't work either.
the image data is actually sent to the server as its console logged. and the dest i specified is created by default but remain empty.
const express = require('express');
const app = express();
const multer = require('multer');
let storage = multer.diskStorage({
destination: '/public/my-uploads',
filename: function (req, file, cb) {
cb(null, file.fieldname + '-' + Date.now())
}
});
const upload = multer({dest:'storage/'}).single('file');
app.post('/upload', upload, (req , res) => {
console.log(req.files) // this does log the uploaded image data.
})
***** EDIT ******
HTML
<form onSubmit={this.upload} enctype='multipart/form-data'>
<input type='file' name='image' />
<input type='submit' value='upload' />
</form>
JS
upload(e){
e.preventDefault();
const file = e.target[0].files[0];
console.log(file)
const fm = new FormData();
fm.append('file', file);
console.log(fm)
axios.post('/upload', fm);
}
POSTMAN

Answer 1

Try to catch the error my calling the middleware yourself:
var upload = multer().single('avatar')
app.post('/upload', function (req, res) {
upload(req, res, function (err) {
if (err) {
// An error occurred when uploading
return
}
// Everything went fine
})
})
Also, change the storage to this:
let storage = multer.diskStorage({
destination: function(req, file, ca) {
cb(null, '/public/my-uploads');
}
filename: function (req, file, cb) {
cb(null, file.fieldname + '-' + Date.now())
}
});

Answer 2

It's been a while, the issue was that I wasn't using the multer middleware at all so the callback code for handling the image was never executed.
I didn't know much about how express worked back then.

Answer 3

Seems you are not using the storage variable and use a function for the destination key, as written in the documentation, also you need to pass your file in the input field named field otherwise multer can't store the file, create an storage folder on the same level as the code :
const http = require('http')
const port = 3000
const express = require('express');
const app = express();
const multer = require('multer');
const server = http.createServer(app)
let storage = multer.diskStorage({
destination: function (req, file, cb) {
cb(null, './storage')
},
filename: function (req, file, cb) {
cb(null, file.fieldname + '-' + Date.now())
}
});
const upload = multer({ storage }).single('file');
app.post('/upload', upload, (req, res) => {
console.log(req.files) // this does log the uploaded image data.
})
// bind the server on port
server.listen(port, (err) => {
if (err) {
return console.log('something bad happened', err)
}
console.log(`server is listening on ${port}`)
})

Answer 4

The name of the "single" in ...single('file') must match the name in the input (containing the file) <input type="file" name='image' /> - and it does not in your example.
Change the multer-part to this ...single('image') - as in the input name='image'

Answer 5

Try this File Storage For Save image in Local
const fileStorage = multer.diskStorage({
destination: (req, file, cb) => {
cb(null, "images");
},
filename: (req, file, cb) => {
cb(
null,
new Date().toISOString().replace(/:/g, "-") + "-" + file.originalname
);
},
});