Firebase实时数据库动态规则

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"
  }
}
"BUSINESS NAME HERE": {
".write": "root.child('Users').child(auth.uid).child('BUSINESS NAME HERE').child('Permissions').val() === "MODERATOR""
}
}
}

当用户访问业务信息时，他们会在带有业务名称的密钥中访问所需的子级。 正如上面输入的，我如何应用它来动态处理他们输入的任何商户名称（很抱歉，如果这对Firebase规则来说是非常基本的新知识）。 谢谢你的帮助！！！

Answer 1

您使用所谓的Dollar变量来标识变量部分：

{
    "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('Permissions').val() === 'MODERATOR'"
        }
    }
}