处理标准用户面临的场景
*我想知道我是否可以在 javascript 中完成所有这些操作，而不是使用 Rails 助手
在我的应用程序中，有几种类型的“if-else”UI 案例。这是一个相当常见的场景，我想知道是否有人有一个简洁的方法来做到这一点？
EG 1) 可能有多种类型的链接具有相同的行为：“upvote”等。
如果是用户自己的文章，不希望传到服务器，而是弹出一个对话框
EG 2) 可能有几个名为“关注”、“成为粉丝”等的链接
如果用户之前已经完成了给定的操作，则它应该是“已关注”文本而不是链接。
*I was wondering if i could do all these in javascript, as opposed to having rails helpers
In my application, there are several types of "if-else" UI cases. This is a fairly common scenario, and i wonder if anyone has a tidy way to do these?
EG 1) There might be several types of links with the same behavior: "upvote", etc.
If it is the user's own article, i do not want it to be passed to the server, but pop up a dialog box
EG 2) There might be a several links called "follow", "become a fan", etc
If the user already have done the given action before, it should be a text "followed" instead of a link.
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通常你会为此使用助手。您可以根据您的示例编写名为
upvote_button（可能将用户作为参数）或follow_button的帮助程序（对于已经关注的用户，该帮助程序可能采用 true/false /不-以下。如果您可以更具体地说明您需要什么，我的回答可能会更具体。
Normally you'd use helpers for this. You write helpers called, based on your examples,
upvote_button(which might take a user as a parameter) orfollow_button(where this one might take true/false for already-following/not-following.If you can be more specific as to what you need, I can probably be more specific in my answer.