Question

我一直在使用firebase工作，我很喜欢它，但今天我正在制定安全规则并且我在使用模拟器时遇到错误，我的代码如下所示：

    {
  "rules": {

    "users":{
       "$uid":{

        ".read": "auth.uid != null",
        ".write": "auth.uid != null",

         ".validate":"newData.child('profile').child('userName').isString()&& newData.val().length < 15"
      }
    }  
  }
}

当我添加长度验证时，会出现错误。当我这样做时：

{
  "rules": {

    "users":{
       "$uid":{

        ".read": "auth.uid != null",
        ".write": "auth.uid != null",

         ".validate":"newData.child('profile').child('userName').isString()"
      }
    }  
  }
}

工作正常，任何想法为什么会发生这种情况，我已经在https://firebase.google.com/docs/database/security/securing-data以及许多其他示例上提到了文档，我无法找到错误。非常感谢你的建议和快乐的编码。

Answer 1

您可以按照此示例向您的字段添加此类验证。

{
  "rules": {
    "users": {
      "$user_id": {
        // grants write access to the owner of this user account
        // whose uid must exactly match the key ($user_id)
        ".write": "$user_id === auth.uid",
        ".read" : "$user_id === auth.uid",
        "familyName" : ".validate": "newData.isString() && newData.val().length > 1 && newData.val().length < 100",
        "givenName" : ".validate": "newData.isString() && newData.val().length > 1 && newData.val().length < 100",
        "age" : ".validate": "newData.isNumber() && newData.val() > 13 && newData.val() < 110",
        "email": {
          // an email is only allowed in the profile if it matches
          // the auth token's email account (for Google or password auth)
          ".validate": "newData.val() === auth.email"
        }
      }
    }
  }
}

Answer 2

好的，我已经解决了正确的语法：

    {
  "rules": {

    "users":{
       "$uid":{

        ".read": "auth.uid != null",
        ".write": "auth.uid != null",

         ".validate":"newData.child('profile').child('userName').isString()&& newData.val().length < 15"
      }
    }  
  }
}

Firebase规则长度验证错误

2 个答案: