将 Firebase Auth 用户映射到 Firestore 文档 [英] Mapping Firebase Auth users to Firestore Documents

问题描述

我正在尝试使用 Firebase 的 Firestore 数据库来处理我的 Android 应用中的User.

I'm trying to use Firebase's Firestore database to handle Users in my Android app.

最初我想使用从 Auth 包(一个字符串)返回的 id，并将其设置为 users 的 id数据库中的集合.在 Collection users 内创建 Document 时，我将 uid 字段设置为该身份验证包字符串.

Initially I want to use the id returned from the Auth package (a string), and set that as the id for the users Collection in the database. When creating a Document inside of the Collection users, I set a uid field to that auth package string.

我意识到没有办法将该字符串设置为可索引的值，以便查询如下:

I realize there is no way of setting that string to an indexable value so that queries like:

// get Auth package uid string
db.collection("users").document(auth_uid_string);

会起作用.

所以我猜，另一种选择是使用 Query.whereEqualTo("uid", auth_uid_string) 这会给我一个列表中的用户，因为 firestore 不假设查询是针对独特的价值.

So the alternative, I guess, is to use Query.whereEqualTo("uid", auth_uid_string) which would give me the user in a list, because firestore doesn't assume the query is for a unique value.

我想避免上述解决方案，并设计一种方法将应用程序的 users 存储在 firestore 中，并使用 auth包以验证我获取了正确的用户.这样的解决方案可能吗?或者我应该尝试不同的 firebase 服务，或者甚至只是在 heroku 或其他东西中运行 postgres 服务器?

I want to avoid the above solution, and devise a way to store the users of the app in firestore, and use the auth package to verify that I fetch the correct user. Is such a solution possible? Or should I try a different firebase service, or even just run a postgres server in heroku or something?

推荐答案

我不确定如何在 android 中执行此操作，但是使用 JS 我正在执行以下操作:

I am not sure how to do this in android, but with JS I am doing the following:

firebase.firestore().collection('users').doc(currentUser.uid).set(currentUser)

currentUser 是认证函数返回的用户对象(我用的是signInWithCredential)它运行良好.我相信你可以在 android 中实现类似的方法.

currentUser is the user object that the authentication function returns (I use signInWithCredential) It is working perfectly. I am sure you can implement a similar approach in android.

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