Firebase Database Rules for groups

Question

I have this Firebase DB which could be changed if necessary:

The JSON of that DB is:

{
  \"groups\": {
    \"1\": {
      \"name\": \"G1\",
         


        

Answer 1

What if you try nested rules for the "points" and "visits" levels:

"groups": {          
  "$groupId": {
    ".read": "root.child('userGroups').child(auth.uid).child($groupId).exists()",
    ".write": "root.child('userGroups').child(auth.uid).child($groupId).val() == 'admin'",
    "points": {
      ".write": "root.child('userGroups').child(auth.uid).child($groupId).val() != 'readonly'"
    },
    "visits": {
      ".write": "root.child('userGroups').child(auth.uid).child($groupId).val() != 'readonly'"
    }
  }
},
"users": {
  "$userId": {
    ".read": "auth != null",
    ".write": "auth != null && 
              $userId === auth.uid && 
              newData.val() != null"
  }
},
"userGroups": {
  "$userId": {
    ".read": "auth != null",
    ".write": "auth != null && 
               data.child(auth.uid).val() === 'admin' && 
               newData.val() != null"          
  }
}