How to Secure Firebase in client side Javascript

Question

I am using Firebase with Ruby on Rails (4.0.3). The Client side JS is listening for events on a particular URL. Obviously, the URL is visible to the client, and adding any token based authentication is useless since that'd be visible too. Whats the way around this?

Answer 1

Firebase supports a system of security rules that define who can read or write information in your Firebase. You define them by writing json like this:

{
  "rules": {
    "foo": {
      // /foo/ is readable by the world
      ".read": true,

      // /foo/ is writable by the world
      ".write": true,

      // data written to /foo/ must be a string less than 100 characters
      ".validate": "newData.isString() && newData.val().length < 100"
    }
  }
}

There's a whole lot more to this topic than is appropriate to put in a Stack Overflow answer, so please check out Firebase's official documentation on security .