通过字符串初始化documentReference失败(Initialize documentReference through string fails)

 我有一个方法返回一个字符串，我知道肯定指向一个文档。 如下所示使用该字符串时： 
 
const docRef = "users/uid/data/online"
const dbPath = db.doc(docRef)
console.log(dbPath.path)
return dbPath.set({"test" : 1})
 
 它失败： 
 
  
 
 如果我使用db.collection（“users”）。doc（uid）......它可以工作。 如何通过打字稿中的字符串创建文档引用？ 
 
 它应该按照文档工作： https : //firebase.google.com/docs/firestore/data-model#references 
 
 编辑：这是我的课程： 
 
export enum UserCollection {
    online = "online",
    private = "private",
    server = "server"
}

export enum UserDocument { 
    online = "online",
    private = "private",
    server = "server"
}

class ManagerPath { 

    pathToUser = "users/"

    getPathToUser(uid: string, userCollection: UserCollection, userDocument: UserDocument): string { 
        return this.pathToUser + "/" + uid + "/" + userCollection + "/" + userDocument;
    }

}

export const managerPath = new ManagerPath();
 
 这就是我如何检索路径： 
 
exports.initializeNewUser = functions.auth.user().onCreate((user) => {
    const test = managerPath.getPathToUser(user.uid, UserCollection.online, UserDocument.online);
    console.log(test)
    const dbPath = db.doc(test)
    return dbPath.set({"dateCreation" : Date.now()}) //fails
})

I have a method that returns a string that I know for sure points to a document. When using that string as follow:
 
const docRef = "users/uid/data/online"
const dbPath = db.doc(docRef)
console.log(dbPath.path)
return dbPath.set({"test" : 1})
 
It fails:
 
 
If I use db.collection("users").doc(uid)...... it works. How can I create a document reference through a string in typescript?
 
It should work according to the docs: https://firebase.google.com/docs/firestore/data-model#references
 
edit: This is my class:
 
export enum UserCollection {
    online = "online",
    private = "private",
    server = "server"
}

export enum UserDocument { 
    online = "online",
    private = "private",
    server = "server"
}

class ManagerPath { 

    pathToUser = "users/"

    getPathToUser(uid: string, userCollection: UserCollection, userDocument: UserDocument): string { 
        return this.pathToUser + "/" + uid + "/" + userCollection + "/" + userDocument;
    }

}

export const managerPath = new ManagerPath();
 
And this is how I retrieve a path:
 
exports.initializeNewUser = functions.auth.user().onCreate((user) => {
    const test = managerPath.getPathToUser(user.uid, UserCollection.online, UserDocument.online);
    console.log(test)
    const dbPath = db.doc(test)
    return dbPath.set({"dateCreation" : Date.now()}) //fails
})

原文：https://stackoverflow.com/questions/49907939