有没有办法获得Firebase Auth用户UID？ [英] Is there any way to get Firebase Auth User UID?

问题描述

我希望通过NodeJS或Javascript API从Firebase获取Auth User（s）UID。
我附上了截图，以便您知道我在寻找什么。

I am looking to fetch Auth User(s) UID from Firebase via NodeJS or Javascript API. I have attached screenshot for it so that you will have idea what I am looking for.

希望，你们帮我解决这个问题。

Hope, you guys help me out with this.

推荐答案

Auth数据在Firebase 3中是异步的。因此您需要等待事件，然后您才能访问当前登录用户的UID。你将无法得到其他人。如果您已经登录，它也会在应用程序打开时被调用。

Auth data is asynchronous in Firebase 3. So you need to wait for the event and then you have access to the current logged in user's UID. You won't be able to get the others. It will get called when the app opens too, if you're already logged in.

firebase.auth().onAuthStateChanged((user) => {
  if (user) {
    // User logged in already or has just logged in.
    console.log(user.uid);
  } else {
    // User not logged in or has just logged out.
  }
});

在您的应用程序中，您可以保存此用户对象，也可以随时获取当前用户 firebase.auth（）。currentUser 。

Within your app you can either save this user object, or get the current user at any time with firebase.auth().currentUser.

https://firebase.google.com/docs/reference/js/firebase.auth.Auth#onAuthStateChanged

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