好的方法来替换Firebase中的无效字符？ [英] Good way to replace invalid characters in firebase keys?

问题描述

我的用例是保存用户的信息。当我尝试使用用户的电子邮件地址作为密钥将数据保存到Firebase时，Firebase将引发以下错误：
$ b

错误：无效的密钥e @ e.ee（不能包含。$ []＃）

，显然，我不能通过他们的电子邮件索引用户信息。什么是最好的做法来取代。？

我已经成功更改。改为 - 但是不会因为某些电子邮件有 - 在地址中。

目前，我正在使用

  var cleanEmail = email。取代（ '` ''。'）; 
  

但是有可能会与此冲突。在电子邮件地址中，用逗号替换点。。 ，。

逗号，是不是允许的字符，电子邮件地址，但 在Firebase密钥中是允许的。对称地，点。 在电子邮件地址中是允许的字符，但在Firebase密钥中不允许 。所以直接替代会解决你的问题。您可以索引电子邮件地址，而无需循环。

您还有其他问题。在你的代码中：

  var cleanEmail = email.replace（'。'，'，'）; 
  

只会替换第一个点。但电子邮件地址可以有多个点。要替换所有点实例，应该使用正则表达式。如下：

  var cleanEmail = email.replace（/\./g，'，'）; 
  

My use case is saving a user's info. When I try to save data to Firebase using the user's email address as a key, Firebase throws the following error:

Error: Invalid key [e-mail] (cannot contain .$[]#)

So, apparently, I cannot index user info by their email. What is the best practice to replace the .?

I've had success changing the . to a - but that won't cut it since some email's have -s in the address.

Currently, I'm using

var cleanEmail = email.replace('.','`');

but there are likely going to be conflicts down the line with this.

解决方案

In the email address, replace the dot . with a comma ,. This pattern is best practice.

The comma , is not an allowable character in email addresses but it is allowable in a Firebase key. Symmetrically, the dot . is an allowable character in email addresses but it is not allowable in a Firebase key. So direct substitution will solve your problem. You can index email addresses without having to loop over anything.

You also have another issue. In your code:

var cleanEmail = email.replace('.',',');

will only replace the first dot . But email addresses can have multiple dots. To replace all dot instances, you should use a regular expression instead. As follows:

var cleanEmail = email.replace(/\./g, ',');

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