firestore规则函数get（）和存在（）未返回所需结果。我在做什么错？

发布于 2025-02-04 02:09:51 字数 1148 浏览 6 评论 0原文

这是我正在使用的Firestore数据库的准排骨结构。名称均为小写

编辑

：
所有居民子集合

1的工作目的是 2不是

match /databases/{database}/documents {

  match /hostels/{hostelId} {
    allow read, write: if request.auth.uid != null;

    match /rooms/{roomId} {
     allow read, write: if exists(/databases/$(database)/documents/
                               hostels/$(hostelId)/admins/$(request.auth.uid));

     allow read: if exists(/databases/$(database)/documents/
                         hostels/$(hostelId)/rooms/$(roomId)/residents/$(request.auth.uid));

       }
    }
}

在阅读室作为居民时，我会遇到错误，

Null value error. for 'list' @ L49

我也通过阅读居民文档的布尔领域而尝试使用Get（），没有运气。

我在做什么？是否存在限制（）和get（）路径参数深度？任何帮助都将是

我用来查询居民的代码，

let q = collection(this.hostelCollection, 
           this.residentSnap.get('hostel_id'), "rooms")
let docs = await getDocs(q);

居民文档具有Hostel_ID字段，其中包含Hostel ID

原文

This is barebone structure of the Firestore database that I am using.
edit: all names are in small letters

The rules I want is

admins of a hostel can read all the rooms of the hostel
residents of a room can only view the room if the room has the residents id in its
residents subcollection

1 is working as intented
2 is not

match /databases/{database}/documents {

  match /hostels/{hostelId} {
    allow read, write: if request.auth.uid != null;

    match /rooms/{roomId} {
     allow read, write: if exists(/databases/$(database)/documents/
                               hostels/$(hostelId)/admins/$(request.auth.uid));

     allow read: if exists(/databases/$(database)/documents/
                         hostels/$(hostelId)/rooms/$(roomId)/residents/$(request.auth.uid));

       }
    }
}

while reading rooms as resident i get error

Null value error. for 'list' @ L49

I also tried with get() by reading a boolean field of resident document and no luck.

what am i doing worng? Is there a limit to exists() and get() path argument depth? Any help would be much appriciated

the code i use to query rooms by resident is

let q = collection(this.hostelCollection, 
           this.residentSnap.get('hostel_id'), "rooms")
let docs = await getDocs(q);

resident document has hostel_id field containing hostel id

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微暖i 2025-02-11 02:09:51

尝试添加单个允许阅读语句并重构规则，如下所示：

rules_version = '2';
service cloud.firestore {
  match /databases/{database}/documents {
    match /hostels/{hostelId} {
      allow read, write: if request.auth.uid != null;

      match /rooms/{roomId} {
        function isAdmin() {
          return exists(/databases/$(database)/documents/hostels/$(hostelId)/admins/$(request.auth.uid));
        }
  
        function isResident() {
          return exists(/databases/$(database)/documents/hostels/$(hostelId)/rooms/$(roomId)/residents/$(request.auth.uid));
        }
      
        allow read: if isAdmin() || isResident();
        allow write: if isAdmin(); 
      }
    }
  }
}

Try adding a single allow read statement and refactoring the rules as shown below:

rules_version = '2';
service cloud.firestore {
  match /databases/{database}/documents {
    match /hostels/{hostelId} {
      allow read, write: if request.auth.uid != null;

      match /rooms/{roomId} {
        function isAdmin() {
          return exists(/databases/$(database)/documents/hostels/$(hostelId)/admins/$(request.auth.uid));
        }
  
        function isResident() {
          return exists(/databases/$(database)/documents/hostels/$(hostelId)/rooms/$(roomId)/residents/$(request.auth.uid));
        }
      
        allow read: if isAdmin() || isResident();
        allow write: if isAdmin(); 
      }
    }
  }
}

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