Save image url to database after upload - node.js

Question

I upload an image from a react native expo app.
In the back end, I have this code :
const storage = multer.diskStorage({
destination: (req, file, callback) => {
callback(null, "avatars");
},
filename: (req, file, callback) => {
let imagePath = Date.now() + path.extname(file.originalname);
callback(null, imagePath);
},
});
const upload = multer({ storage: storage });
app.use("/uploadAvatar", upload.single("avatar"), (req, res) => {
res.status(200).json("Image enregistrée !");
});
It works fine and save the image into a folder.
What I need to do, is to save the image path in the database.
The image is an avatar for a user profile, so I need to add its path to the user table.

Answer 1

Suppose you are storing the image in your middleware:
app.use('/uploadAvatar', upload.single('avatar'), async (req, res) => {
// Assume that you're storing the image with a function,
// in this case you just need to pass the filename into
// your function. This is a pseudocode and is not expected to work
// as it is, so please adjust accordingly.
const result = await storeImage(req.file.filename);
// Return the response as JSON.
res.status(200).json('Image enregistrée!');
});
Basically, you have to inspect the req.file that would be populated after you call the upload.single('avatar') middleware. In this case, we're taking the filename to be stored into the database. You can do any path/file/property manipulations that you might want to do before storing that image, though.
For further information about req.file and what properties it contains, please see the Multer documentation.