相关疑难解决方法(0)

在新创建的文档上对Firestore规则使用get()会导致返回值为false.如果您等待几秒钟并点击在同一个新文档上调用get()的安全规则,则get()将返回预期值.我在规则和/或代码中遗漏了什么,或者这是Firestore的错误？

service cloud.firestore {
  match /databases/{database}/documents {

    match /budgets/{budgetId} {

      allow read: if resource.data.userId == request.auth.uid;
      allow create: if request.auth.uid == request.resource.data.userId;

      match /accounts/{accountId} {
        allow read, create, update: if userOwnsBudget();  // <--- failing for newly created budget documents
      }

      function userOwnsBudget() {
        return get(/databases/$(database)/documents/budgets/$(budgetId)).data.userId == request.auth.uid;
      }
    }
  }
}

const data: Budget = {
    userId: userId,
    budgetName: budgetName,
    currencyType: currencyType
};

try {
    const newBudget = await this.afs.collection<Budget>('budgets').add(data);

    const accountsCollection: AngularFirestoreCollection<BudgetAccount> = this.afs.collection<BudgetAccount>('budgets/' + newBudget.id + '/accounts');

    //Insufficient …