From: Ron Fox <fox@...>
Date: 2008-05-27T20:39:16+09:00
Subject: Re: Railsy Question about redefining ruby methods...

Have you looked at the rails routes table?


Xeno Campanoli wrote:
> Please this is a Ruby question, not, at least as the main focus, a rails 
> one, as you'll see if you read all the way through.
> 
> Say, I've got a case in Rails where I want all my links to be prepended 
> with something like ~u1/rrsw/thingies so I can see 
> http://host/~u1/rrsw/thingies and http://host/~u2/rrsw/thingies instead 
> of http://host:9001/thingies and http://host:9002/thingies for a rails 
> tool that is used by some n projects.  The rails part is apparently not 
> configurable, so I'm looking at redefining rails methods like link_to to 
> stick the path in there.  This should be reasonable, but I'm stuck on a 
> ruby problem:
> 
> I want to redefine the link_to method so it's seen in its new guise in 
> all the places where it's presently used.  It seems to make most sense 
> to put the new redefinition in the module ApplicationHelpers, but I 
> believe that may short circuit the access, as I'm not seeing the example 
> I put in which always puts out a traceable constant, resulting in the 
> expected changes in my test web pages.  So, and here is the question:
> 
> Can anyone suggest how I should specify an appropriately available 
> method for the correct module inside another module so that it overrides 
> the original in the fashion I desire?  I presume this is a simple 
> problem, as it's what people do all the time in OO right?  I'm still a 
> little green on these patterns yet I think.
> 
> Thanks for any suggestions.
> 
> Sincerely, Xeno Campanoli
> 
> Droopy hacker on a Friday Evening...
>