How would I run server-side code in Firebase?

Question

I have a function where I want to perform some server-side validations, but I\"m not sure how to do this? Any suggestions where I should look. THere is nothing in the docu

Answer 1

The best way to do this is to create a "pending" node and a "completed" node in Firebase. Every time the client takes an action that requires server validation, have the client add an entry into the pending node. On the server side, you can use the Firebase node.js client (or Java SDK) to listen for changes on the "pending" node, validate the action, and then put it in the "complete" node if the validation succeeds. You'll need to setup your security rules such that only the server code can add items into the "complete" node (for example, by using the secret) - learn more about the Firebase security rules here: https://www.firebase.com/docs/security/security-rules.html

If your validations are fairly simple to perform, you may be able to do the validation using the security rules themselves - they provide simple string/integer/boolean validation.