在coffeescript中获取rails视图帮助器方法 [英] Get rails view helper methods inside coffeescript

问题描述

我有一个视图助手，请说（为了简单起见）

I have a view helper, let say (for simplicity's sake)

def call_alert
  return "alert 'this should appear'"
end

然后我有一个coffeescript文件 some_test_page。 js.coffee ，用于通过ajax调用的操作。
在此 some_test_page.js.coffee 内有：

Then I have a coffeescript file some_test_page.js.coffee which renders for an action which is called via ajax. Inside this some_test_page.js.coffee I have:

<%= call_alert %>

当我对 / some_test_page 进行ajax调用时，从coffeescript文件获得带有编译的javascript的响应，并且将发生警报。

When I do an ajax call to /some_test_page, I usually would expect to get a response with the compiled javascript from the coffeescript file and an alert would occur. However, it seems the view helper I tried to use cannot be accessed.

如果我把一个简单的

alert 'this should appear'

咖啡文件它工作正常。

我觉得这应该是确定，但也许我正在做一些反约定或愚蠢的？

I feel like this should be ok, but maybe I'm doing something counter-convention or stupid?

如何从我的coffeescript视图文件中的application_helper.rb获取视图助手？

How can I get the view helpers from application_helper.rb inside my coffeescript view files?

推荐答案

似乎问题是，我的帮助方法中的javascript没有添加换行符到它正在返回 doh 。

It seems the issue was that the javascript inside my helper method wasn't adding newlines to the js it was returning doh.

Coffeescript试图编译一个巨大的未分离的代码语句字符串。
我添加了\\\
到我的js代码行的助手，一切工作正常现在。

As a result, Coffeescript was trying to compile one huge string of unseparated code statements. I added \n to my js code lines in the helper and everything works fine now.

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