Tukukkk

I want to store some images using mysql and nodejs. I have read that it is not a good idea to store them directly in the database but that I should store the path to the image in the database, and store the image in the filesystem.

Say a user uploads an image, how, exactly, do I store the image in the filesystem?

:D Other than multer you can also try "express-fileupload" if you're using express.
Adds req.files to your requests ( :D easier to work with imo)

https://www.npmjs.com/package/express-fileupload

https://github.com/richardgirges/express-fileupload/tree/master/example#basic-file-upload

const fileUpload = require('express-fileupload');

expressApp.use(fileUpload());

then in your routes:

app.post('/upload', function(req, res) {

console.log(req.files.foo); // the uploaded file object

});

I also use "sharp" for resizing images:

https://www.npmjs.com/package/sharp

Example(i've not tested this code just copied and change a bit from a project):

expressApp.post('/submit-form',(req,res)=>{

let f = req.files.profileImage;

//its usually a good idea to rename files uploaded to sth unique using DateTime with their original name (or instead of their original file name)

const fileName = (f.name.substring(0, f.name.lastIndexOf('.')) + '-' + Date.now().toString()).replace(' ','');

const fileFormat = f.name.substring(f.name.lastIndexOf('.'), f.name.length);

const filePath = path.resolve('public/media') + '/' + folder + fileName + fileFormat;

f.mv((err)=>{

    if(err)

    {

        console.log('sth went wrong while uploading image!');

        return;

    }

    //HERE STORE filePath to Database or sth:



});

})

Use multer middleware for file upload.

https://www.npmjs.com/package/multer