firebase-realtime-database - Firebase 数据库规则的语法错误

Question

{
    "rules": {
        "Users": {
            "$user_id": {
                // Grants write access to the owner of this user account
                // whose uid must exactly match the key ($user_id)
                ".write": "$user_id === auth.uid"
            }
        }
        "$businessName": {
            ".write": "root.child('Users').child(auth.uid).child($businessName).child('Permission    s').val() === 'MODERATOR'"
        }
    }
}

这给我一个错误:

Error saving rules - Line 10: Expected ',' or '}'.

错误提示我由于某种原因缺少括号。我是不是漏掉了逗号之类的东西？

Answer 1

正如@Frank van Puffelen 所说，我只是在“$businessName”之前少了一个逗号。