Question

I have a a helper that contains a simple on and off switch. I know I have it working because it s working on other pages. However, on this particular page it won t work.. I think its because theres an end within the if else, so it ends the if else early. Here s the code:

我认为这一部分正在发挥作用:

<% if popup == "off" %>
       <% content_for :main do %>
<% end %>

This part not so much:

<% if popup == "off" %>
       <% end %>  << this end should be displayed if popup = off 
<% end %>

Answer 1

Seems all the suggestions of doing <%= "<% end %>" %> results in a syntax error.. May seem like easy way out by ended up just restructuring my app and got rid of the requirement of <% content_for :main do %>

Answer 2

You could do this:

<% if popup == "off" %>
       <%= "<% end %>" %>  << this end should be displayed if popup = off 
<% end %>

或试图:

<% if popup == "off" %>
       &lt;% end %&gt;  << this end should be displayed if popup = off 
<% end %>

Answer 3

如果你只想显示<代码>end,就不必在标签上附上。标注中的任何附着均被解释为《鲁克法典》,但任何内容均不按原样印刷。

<% if popup == "off" %>
   end  << this will now be interpreted as text, not ruby code
<% end %>

Answer 4

ERB (and Ruby) doesn t work like that.

我认为,你重新对待它,就像你试图结束一个“超文本标签”,而不是一个“<编码>end进入一个“鲁比”栏,而且你希望这两个法典部分之间的一切都能够在<代码>连续_for栏中操作。

Here s what you need. Everything in between will be included in the content_for block:

<% if popup == "off" %>
  <% content_for :main do %>
    your block code will be evaluated here.
  <% end %>  
<% end %>

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