node.js - Firebase and backend logic

Question

I am parse.com user, and now I look for another service. How can I write back end logic to firebase?

let say I want to validate all the values on server side, or trigger things. I thought about one solution, but I want to know the recommended way.

I think to

1. create nodejs server, that uses express.
2. create middlewares to handle the logic.
3. send rest request from the app, that triggers the middlewares
4. use the nodejs sdk of firebase to update the values according to the params of the http request.
5. And implement on the app firebase handler that listen to changes

their something simpler? In parse I used cloud code, I want that the logic will not be on the client side but on a server side.

Answer 1

Waitting for answers