thr3ads.net - Rails - X is not missing constant Y [Oct 2008]

If this information is useful, please help other people find it:
Share via:

Jamal Soueidan

2008-Oct-30 14:14 UTC

X is not missing constant Y

Moving my app from rails 1.2 to rails 2.1, I stuck into this weird
problem?

X is not missing constant Y.

The problem occurs when I use the join table association.

X.find(1).y

It works in (script/console) but not in browser?

Anyone have any experience with this issue?
-- 
Posted via http://www.ruby-forum.com/.

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

Ryan Bigg

2008-Oct-30 14:25 UTC

head link

Re: X is not missing constant Y

It would be better if you explained what X and Y were and how they
relate to each other. Could you please do that for us? Thanks.
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

Jamal Soueidan

2008-Oct-30 14:35 UTC

head link

Re: X is not missing constant Y

Ryan Bigg wrote:> It would be better if you explained what X and Y were and how they
> relate to each other. Could you please do that for us? Thanks.
It''s fixed :)

Thanks.
-- 
Posted via http://www.ruby-forum.com/.

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

John Small

2008-Oct-30 14:39 UTC

head link

Re: X is not missing constant Y

Jamal Soueidan wrote:> Moving my app from rails 1.2 to rails 2.1, I stuck into this weird
> problem?
> 
> X is not missing constant Y.
> 
> The problem occurs when I use the join table association.
> 
> X.find(1).y
> 
> It works in (script/console) but not in browser?
> 
> Anyone have any experience with this issue?
Yes! and the really bizarre part of the problem is that the same Rails 
version worked OK in WinXP

My problem appeared when I had the following in let''s say 
legacy_data_models.rb

module LegacyDataBaseStuff
 $olddb = {some_db_options}

 Class OldParentItem < ActiveRecord::Base
 has_many :old_child_items
 establish_connection $olddb
 end

 Class OldChildItem < ActiveRecord::Base
 belongs_to :old_parent_item
 establish_connection $olddb
 end

end

Then in a rake task to import things from a legacy database I''d open a 
parent like so

parent = LegacyDataBaseStuff::OldParentItem.find :all

which works until I''d try

parent.old_child_items

which would give me exactly the error you''re getting  "X is not
missing
constant Y"

I worked around the problem by taking the models out of the module and 
just putting everything in the rake file. Not clean but it did the job 
and the job only needed to be done once.

I''d be interested to know how your situation compares

Cheers

John Small

-- 
Posted via http://www.ruby-forum.com/.

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

Pardee, Roy

2008-Oct-30 15:57 UTC

head link

Re: X is not missing constant Y

Well don''t leave us hanging--how''d you fix it? ;-)

-----Original Message-----
From: rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
[mailto:rubyonrails-talk@googlegroups.com] On Behalf Of Jamal Soueidan
Sent: Thursday, October 30, 2008 7:35 AM
To: rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
Subject: [Rails] Re: X is not missing constant Y


Ryan Bigg wrote:> It would be better if you explained what X and Y were and how they
> relate to each other. Could you please do that for us? Thanks.
It''s fixed :)

Thanks.
--
Posted via http://www.ruby-forum.com/.



--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

John Small

2008-Oct-30 19:08 UTC

head link

Re: X is not missing constant Y

Roy Pardee wrote:> Well don''t leave us hanging--how''d you fix it? ;-)
Oh I thought I''d explained it in the previous message. I took the class
definitions out of the module, and moved them into the rake file. That 
did the trick.

I suspect that the problem has something to do with the associations 
being to ActiveRecords that are declared inside modules and then used 
outside those modules. But I''ve not had a chance to play around to find
out.

John Small


-- 
Posted via http://www.ruby-forum.com/.

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

Frederick Cheung

2008-Oct-30 19:27 UTC

head link

Re: X is not missing constant Y

On Oct 30, 7:08 pm, John Small
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:> Roy Pardee wrote:
> > Well don''t leave us hanging--how''d you fix it? ;-)
>
> Oh I thought I''d explained it in the previous message. I took the
class
> definitions out of the module, and moved them into the rake file. That
> did the trick.
>If you were previously using require to require files in your app then
that can screw things up big time.

Fred> I suspect that the problem has something to do with the associations
> being to ActiveRecords that are declared inside modules and then used
> outside those modules. But I''ve not had a chance to play around to
find
> out.
>
> John Small
>
> --
> Posted viahttp://www.ruby-forum.com/.--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

John Small

2008-Oct-30 20:01 UTC

head link

Re: X is not missing constant Y

Frederick Cheung wrote:
> If you were previously using require to require files in your app then
> that can screw things up big time.
> 
> Fred
A very mysterious clue! How would require mess things up? This is 
something we all need to know. I certainly do, it''s quite hard for me
to
find out about all the little hidden undocumented tricks that one needs 
to know to become a true pro.

Cheers

John Small

-- 
Posted via http://www.ruby-forum.com/.

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

Jamal Soueidan

2008-Oct-30 20:43 UTC

head link

Re: X is not missing constant Y

Roy Pardee wrote:> Well don''t leave us hanging--how''d you fix it? ;-)
Sorry, I went home from work before but now I''m online again.

class Blog::Post < ActiveRecord::Base
  belongs_to :category
end

class Blog::Category < ActiveRecord::Base
  has_many :posts
end

Error:

Blog is not missing constant Post

so I just did this :)

class Blog::Post < ActiveRecord::Base
  belongs_to :category, :class_name => "Blog::Category",
:foreign_key =>
:category_id
end

class Blog::Category < ActiveRecord::Base
  has_many :posts, :class_name => "Blog::Post", :foreign_key => 
:category_id
end


and then it works :)
-- 
Posted via http://www.ruby-forum.com/.

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

Frederick Cheung

2008-Oct-30 22:22 UTC

head link

Re: X is not missing constant Y

On Oct 30, 8:01 pm, John Small
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:> Frederick Cheung wrote:
> > If you were previously using require to require files in your app then
> > that can screw things up big time.
>
> > Fred
>
> A very mysterious clue! How would require mess things up? This is
> something we all need to know. I certainly do, it''s quite hard for
me to
> find out about all the little hidden undocumented tricks that one needs
> to know to become a true pro.
Short version: because requiring files that could be loaded by rails''
dependency system confuses said system (in development mode)
long version: http://www.spacevatican.org/2008/9/28/required-or-not

Fred>
> Cheers
>
> John Small
>
> --
> Posted viahttp://www.ruby-forum.com/.--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

Rails - Oct 2008 - X is not missing constant Y

X is not missing constant Y

Re: X is not missing constant Y

Re: X is not missing constant Y

Re: X is not missing constant Y

Re: X is not missing constant Y

Re: X is not missing constant Y

Re: X is not missing constant Y

Re: X is not missing constant Y

Re: X is not missing constant Y

Re: X is not missing constant Y