将Firebase Auth用户映射到Firestore文档

问题描述

我正在尝试使用 Firebase 的Firestore数据库来处理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包返回的 id (字符串)，并将其设置为数据库中users Collection的ID.在Collection users内部创建Document时，我将uid字段设置为该身份验证软件包字符串.

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，以使查询类似:

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);

会工作的.

因此，我猜想，替代方法是使用Query.whereEqualTo("uid", auth_uid_string)，它将为我提供列表中的用户，因为firestore不假设查询是针对唯一值的.

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，而是想出一种方法来将应用程序的users存储在firestore中，并使用auth包来验证我是否提取了正确的用户.这样的解决方案有可能吗?还是我应该尝试使用不同的firebase服务，甚至只在heroku或其他操作系统中运行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中做到这一点，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是身份验证功能返回的用户对象(我使用signInWithCredential)运行良好.我确定您可以在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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