DEV Community


Discussion on: Build a Node.js/Express API with MongoDB

floppydiskette profile image
Sophie • Edited

Hello Edin!

Thank you so much for the tutorial. I ran into an error and would be obliged if you could help me.
I got TypeError: Book is not a constructor in this piece of code (pls see screenshot - and cannot move further with the tutorial.
Thanks in advance.

edin profile image
Edin Author • Edited

Add the line

module.exports = mongoose.model("Book", BookSchema);

to book.model.js

I fixed it above, sorry for that.

floppydiskette profile image

Thanks for your prompt reply Edin! I appreciate that.

One more thing, Edin, would you pls fix this part of code, otherwise someone will run into a ReferenceError: next is not defined :-) Thanks again!, err) => {
        if (err) {
            return next(err);
        res.send('Book created successfully!');