Express Router – mergeParams – Brian Hafner Tech Blog

Express Router – mergeParams

I spent the last two days trying to figure out why I couldn’t access my req.params in my Express.js router middleware. I finally figured it out!

const router = express.Router({ mergeParams: true });

1	const router = express.Router({ mergeParams: true });

I needed to add { mergeParams: true } when I call the Router.