I'm trying to improve my code reuse a bit, and I have some templates that 
all start with a common case statement to determine a local proxy (I'm 
simplifying the file slightly for our discussion here):

file: proxy.erb
<% proxy = case @site
   when "a" then "proxya"
   when "b" then "proxyb"
   when "c" then "proxyc"
   when "d" then "proxyd"
end -%>

This gets included in each template something like this:

file: CentOS-Base.repo.erb
<%= scope.function_template(["yum/proxy.erb"]) -%>
:
[base]
name=CentOS-$releasever - Base
:
<% if $proxy -%>
proxy=http://<%= $proxy %>:3128
<% end -%>
:

The problem is that the "proxy" variable isn't visible from the outer 
scope. How can I either qualify the outer reference to see it, or somehow 
export it? Is this possible in some other fashion? I don't want to repeat 
this code across all the various repo files; adding a proxy shouldn't mean 
editing every single repo file template when it could mean editing just one 
file that gets included somehow. At least, that's the goal.

Thanks!


Bret

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