Firebase中的匿名用户 [英] Anonymous user in Firebase

问题描述

我正在与Amazon Mechanical Turk一起运行众包网站。 Firebase用于跟踪用户的中间信息。

由于AMT身份验证与Firebase无关，因此我无法使用这些身份验证用户身份。为了能够将数据写入Firebase，必须存在身份验证。

我目前的解决方案是使用匿名用户。虽然它工作，我发现每次页面重新加载，一个新的匿名用户被创建。这可能不是可扩展的，因为在开发过程中，我创建了约6000个匿名用户。

我怎样才能解决这个问题？

解决方案

听起来像是调用 signInAnonymously（） ，这确实会创建一个新的匿名用户。

您应该改为监视身份验证状态，并且只有在用户尚未登录时才登录：

  firebase.auth（）。onAuthStateChanged（用户）{
 if（user）{
 //用户登录。
} else {
 firebase.auth（）。 （）错误
 var errorCode = error.code; 
 var errorMessage = error.message; 
 //。 .. 
}）; 
} 
}）; 
  

I'm running a crowdsourcing website with Amazon Mechanical Turk. Firebase is used to track intermediate information of users.

Since AMT authentication is not related to Firebase, I can't use those to authenticate user. And to be able to write data to Firebase, the authentication must be present.

My current solution is using anonymous users. While it works, I found that every time the page is reloaded, a new anonymous user is created. This might not be scalable, as during development I have created ~6000 anonymous users.

How could I fix this problem?

解决方案

It sounds like you're calling signInAnonymously() on every page load, which will indeed create a new anonymous user.

You should instead monitor authentication state and only sign in the user when they're not signed in yet:

firebase.auth().onAuthStateChanged(function(user) {
  if (user) {
    // User is signed in.
  } else {
    firebase.auth().signInAnonymously().catch(function(error) {
      // Handle Errors here.
      var errorCode = error.code;
      var errorMessage = error.message;
      // ...
    });
  }
});

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