From: Tony Arcieri <tony@...>
Date: 2009-06-18T12:21:12+09:00
Subject: Re: ActiveSupport "is not missing constant" errors

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*tumbleweeds*

Okay, different question... does anyone know who specifically I can contact
about this question?  Is there a more appropriate mailing list I should be
asking this on?

On Mon, Jun 15, 2009 at 1:27 PM, Tony Arcieri <tony@medioh.com> wrote:

> I've gone spelunking through ActiveRecord's dependencies.rb until my eyes
> bleed, and I'm still yet to understand what causes these errors and how can
> they can be prevented.
>
> As far as I can tell, ActiveSupport's const_missing callback is triggered.
> ActiveSupport then attempts automatic code loading, only to discover that
> the constant is, in fact, already defined.
>
> I am specifically encountering this problem trying to use a
> dependency-resolving code loader:
>
> http://github.com/tarcieri/require_all/tree/master
>
> I've encountered this problem using Merb's code loader as well (albeit
> outside of Merb).  Merb's code loader works in the same way so I'm wondering
> if this issue comes up with Merb as well.
>
> In the latest case, the code loads in through the code loader correctly,
> however when it tried to access a particular constant in a method body, the
> error is generated, even though the class has been loaded.  This doesn't
> even happen consistently either: it is happening on one of my coworker's
> computers (and only his computer, even though his setup is virtually
> identical to our CI server).  Also, it occurs only when the full Rails
> environment is loaded, not in unit tests. *sigh*
>
> This has been a perpetual thorn in my side for over a year.  I really have
> to wonder?
>
> 1) What does this "error" really mean?
> 2) Why is it an error?
> 3) Why can't ActiveSupport handle it internally?
> 4) What am I expected to do in order to fix it?
>

-- 
Tony Arcieri
medioh.com

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