Can not have multiple default rules

Question

I am using GeoFire to store location in Firebase realtime database. I have 2 tables table-a and table-b. For both of these tables, I would like to enable indexing. On saving the below rules, Firebase prompts the following error:

Cannot have multiple default rules ('$table-a' and '$table-b').

    {
      "rules": {
          ".read": "auth != null",
          ".write": "auth != null",
          "$table-a": {
          ".indexOn":"g"
            },
          "$table-b": {
          ".indexOn":"g"
            }
      }
    }

Any ideas on what I might be missing here?

Answer 1

I think you should do as follows:

{
  "rules": {
      ".read": "auth != null",
      ".write": "auth != null",
      "table-a": {
      ".indexOn":"g"
        },
      "table-b": {
      ".indexOn":"g"
        }
  }
}

As explained here, the $location syntax is "used to reference the key of a $location that was used earlier in a rule structure"