Firebase realtime database add rule based on child

manpreet Best Answer 3 years ago

I have put a rule as

(root.child('users').child(auth.uid).child('role/cafe').val() === true)

in my realtime database">database rules.

My user is

key {
 uid: xxxx 
 name: xxxx
 role:{
  cafe: true
  user: false
  }
}

if auth.uid is equal to key, the rule works, however how can I modify the above rule to look for uid inside data

manpreet 3 years ago

You can use a wild card. In your rules

"users":{
  "$key":{
    ".read" : (root.child('users'+$key).child('role/cafe').val() === true) && (root.child('users'+$key).child('uid').val() === auth.uid  ),
    ".write" : (root.child('users'+$key).child('role/cafe').val() === true  ) &&(root.child('users'+$key).child('uid').val() === auth.uid  )
  }
},

The first condition checks whether the café value for the user is true the second checks whether the uid is the same