Firebase實時數據庫動態規則

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""
}
}
}

當用戶訪問業務信息時，他們會在帶有業務名稱的密鑰中訪問所需的子級。 正如上面輸入的，我如何應用它來動態處理他們輸入的任何商戶名稱（很抱歉，如果這對Firebase規則來說是非常基本的新知識）。 謝謝你的幫助！！！

Answer 1

您使用所謂的Dollar變量來標識變量部分：

{
    "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'"
        }
    }
}