发生异常。 FirebaseException（[cloud_firestore/permission-denied]

Posted 2023-02-23

【中文标题】发生异常。 FirebaseException（[cloud_firestore/permission-denied]

【英文标题】：Exception has occurred. FirebaseException ([cloud_firestore/permission-denied]

【发布时间】：2021-09-17 12:35:06

【问题描述】：

发生了异常。 FirebaseException([cloud_firestore/permission-denied]调用者没有执行指定操作的权限。)

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部分代码

...
    DocumentSnapshot snapshot = await categories.doc('categories').get();
...

Cloud Firestore 规则

rules_version = '2';
// Allow read/write access on all documents to any user signed in to the application
service cloud.firestore 
  match /databases/database/documents 
    match /document=** 
      allow read, write: if request.auth != null;
    
  

存储规则

rules_version = '2';
service cloud.firestore 
  match /databases/database/documents 
    match /document=** 
      allow read, write: if request.auth != null;
    
  

【参考方案1】：

您的安全规则要求用户必须先登录 Firebase 身份验证，然后才能读取和写入数据。错误消息表明不满足此条件。

您共享的代码无法表明用户确实已登录，因此我建议您先添加一些额外代码来帮助解决此问题。例如：

assert(FirebaseAuth.instance.currentUser != null, "User must be signed in before they can read from Firestore");
DocumentSnapshot snapshot = await categories.doc('categories').get();

【讨论】：

谢谢你的回答，伙计。是的，用户没有登录。顺便说一句，我能够在它发生之前登录。 pastebin.com/nZ6JDaqs。 _AssertionError（'package:foodshare/services/categoryservice.dart'：断言失败：第 21 行 pos 12：'FirebaseAuth.instance.currentUser != null'：用户必须先登录才能从 Firestore 读取数据）

整个代码库：github.com/organicnz/foodshare

你的仓库是私有的

是的，我很快就意识到了这一点并且已经改变了:)