April 2018
Intermediate to advanced
284 pages
6h 43m
English
Once the user is authenticated, they can access the database. However, you need some control over who can access what. Everybody should not be allowed to read/write all the data present in your database. This is where Authorization comes into the picture. Firebase Database Rules allow you to control access for each user. Firebase security rules are node based and are managed by a single JSON object that you can edit on your Realtime Database console or using the Firebase CLI:
{ "rules": { "users": { ".read": "true", ".write": "false" } }}
The preceding rules determine that all the users will be able to read the users' data but nobody will be able to write to it. Also, note that it is mandatory to have rules as the first node ...