Rails - Jun 2005 - Artilce about ActiveRecord: need your help with strange problem

Hi

I am currently preparing an article about ActiveRecord

for a german magazin including some advertising the
ActiveRecord
is really great. I am almost finished but I have one
strange problem:

I have a file called predator.rb.
within this file there is this code:

========ActiveRecord::Base.establish_connection(
....
)

class Predator < ActiveRecord::Base
  def to_s
	"id: #{id()}    german_name: #{german_name()}   
english_name: #{english_name()}"
  end
end
=========
and I have a file called pred_prey.rb with this code:

========
ActiveRecord::Base.establish_connection(
...
)

class Predator < ActiveRecord::Base
  has_and_belongs_to_many :prey,  :join_table =>
"predators_prey"
  def to_s
	"id: #{id}    german_name: #{german_name}   
english_name: #{english_name}"
  end
end
.....
========
that is two Predator classes but in different files. I
use each for a different 
database (different database name, but same table name
(predators)

In a third file create_pred_prey.rb I have this code:

========require "pred_prey"

pred1 = Predator.new
pred1.german_name = "Luchs"
pred1.english_name = "Lynx"
pred1.category = "Mammals"
pred1.save
...
========but I get this message:

./predator.rb:18: warning: method redefined;
discarding old to_s

I made some checks and found out that both
"predator.rb" and "pred_prey" are 
somehow required. so this yields this strange error.

can anyone tell me why both files are required when I
only call 
require "pred_prey" 
and never
require "predator"

regards

Markus





	

	
		
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On 6/23/05, Markus Jais <markus_jais-LWAfsSFWpa4@public.gmane.org>
wrote:
> Hi
> 
> I am currently preparing an article about ActiveRecord
> ./predator.rb:18: warning: method redefined;
> discarding old to_s
> can anyone tell me why both files are required when I
> only call
> require "pred_prey"
> and never
> require "predator"
It''s probably activesupport''s automagic require functionality,
it''s
being helpful and ''loading'' predator.rb to pick up any changes
you''ve
made.   Try renaming predator.rb to something else and see if it still
happens.  You could also use:

Dependencies.mechanism                             = :require


 
> regards
> 
> Markus
> 
> 
> 
> 
> 
> 
> 
> 
> 
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> 

-- 
Cheers

Koz

--- Michael Koziarski <koziarski-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
schrieb:
> On 6/23/05, Markus Jais <markus_jais-LWAfsSFWpa4@public.gmane.org>
> wrote:
> > Hi
> > 
> > I am currently preparing an article about
> ActiveRecord
> > ./predator.rb:18: warning: method redefined;
> > discarding old to_s
> 
> > can anyone tell me why both files are required
> when I
> > only call
> > require "pred_prey"
> > and never
> > require "predator"
> 
> It''s probably activesupport''s automagic require
> functionality, it''s
> being helpful and ''loading'' predator.rb to pick up
> any changes you''ve
> made.   Try renaming predator.rb to something else
> and see if it still
> happens.  You could also use:
> 
> Dependencies.mechanism                             > :require
> 
> 
>  
> > regards
> > 
> > Markus
> > 

when I move predator.rb to another directory the
problems are gone.
maybe I will just use another classname and table name
for my second example. that should avoid these
problems.

do you know where I can find documentation about
activesupport''s automagic require functionality ??

regards

markus







	

	
		
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