配置firestore安全规则以允许用户有效地仅访问自己的数据

Question

使用firestore和angularfire2 RC2。

service cloud.firestore {
    match /databases/{database}/documents {
        match /collectionA/{userId=**} { 
            allow read, write: if true;
        }
        match /collectionB/{userId=**}  {
            allow read, write: if true;
        }
        match /collectionC/{userId=**}  {
            allow read, write: if true;
        }
        match /collectionD/{userId=**}  {
            allow read, write: if true;
        }
    }
}

我想要达到的目的是只允许用户访问他们自己的数据。

我从以下规则开始：

service cloud.firestore {
    match /databases/{database}/documents {
        match /collectionA/{userId=**} { 
            allow read, write: if request.auth.uid == userId;
        }
        match /collectionB/{userId=**}  {
            allow read, write: if request.auth.uid == userId;
        }
        match /collectionC/{userId=**}  {
            allow read, write: if request.auth.uid == userId;
        }
        match /collectionD/{userId=**}  {
            allow read, write: if request.auth.uid == userId;
        }
    }
}

然而，只要我添加任何类型的限制性规则，包括甚至只是验证请求，就被授权了。

match /databases/{database}/documents {
    match /collectionA/{userId=**} { 
       allow read, write: if request.auth;
    }
    match /collectionB/{userId=**}  {
        allow read, write: if request.auth;
    }
    match /collectionC/{userId=**}  {
        allow read, write: if request.auth;
    }
    match /collectionD/{userId=**}  {
         allow read, write: if request.auth;
    }
}

const entryCollection: AngularFirestoreCollection<Entry> = this.angularfirestore.collection('collectionC/' + user.uid + '/records' + '/2017-40' + '/entries');

Answer 1

简而言之，{userid=**}导致userid是路径而不是字符串。这意味着将其与request.auth.uid（字符串）进行比较将失败。相反，您可能需要以下内容：

service cloud.firestore {
    match /databases/{database}/documents {
        match /collectionA/{userId}/{allSubcollections=**} { 
            allow read, write: if request.auth.uid == userId;
        }
    }
}

这将保证userid是一个字符串，然后匹配适当的子集合（请再次注意，allsubcollections将是一个path)。