From: Ezra Zygmuntowicz <ezmobius@...>
Date: 2006-08-08T11:35:44+09:00
Subject: Re: Extracting instance variables from a block?

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On Aug 7, 2006, at 6:08 PM, Chris Eskow wrote:

> Hello fellow Rubyists,
>
> I am writing a tiny custom web framework, similar in nature to web.py
> (http://webpy.org/). However, I'd like someone with better
> metaprogramming-foo to help me clean up some syntax a bit.
>
> Here's a _very_ basic abbreviated version of the framework:
>

> <snip>

> So, my question: is there any way to capture the instance variables  
> set
> in the block, and use them for a template binding elsewhere? Or at  
> least
> do something else that gives me my desired results?
>
> Thanks,
> Chris
>
> -- 
> Posted via http://www.ruby-forum.com/.
>

Hey Chris-

	Cool little class ;) Take a look at this, you should be able to use  
something like it to do what you want.

class Web
   def page(url, &blk)
     @url = url
     instance_eval &blk
   end
end

web = Web.new

web.page '/hello/(\w+)' do |name|
   @title = 'Hello'
   @name = "Ernie"
end

puts web.inspect

=> #<Web:0x32c998 @title="Hello", @name="Ernie", @url="/hello/(\\w+)">

-Ezra
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