Trouble with Callbacks

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October 27th, 2010, 12:52 PM

bchin

Registered User

Join Date: Oct 2010

Posts: 2

Time spent in forums: 13 m 30 sec
Reputation Power: 0

Trouble with Callbacks

Hi,

I'm still new to Ruby on Rails, and I want to utilize ActiveRecord::Observer. I got Observer working under the rails environment by putting my rb files under app/model and configuring config/environment.rb. However, I want to automate the testing of my site via command line. Is this possible?

So, I have a foo.rb

Code:

(bchin ~/setup/rails/pratice/app/models)cat foo.rb 
class Foo < ActiveRecord::Base
end

and my foo_observer.rb

Code:

(bchin ~/setup/rails/pratice/app/models)cat foo_observer.rb 
class FooObserver < ActiveRecord::Observer

  def after_create(foo)
    puts foo.id
    Foo.find(foo.id)
  end

end

and I registered foo_observer under config/environment

Code:

(bchin ~/setup/rails/pratice/app/models)grep 'foo' ../../config/environment.rb 
  config.active_record.observers = :foo_observer

And, when I go to the console, everything works as expected

Code:

(bchin ~/setup/rails/pratice/script)./console 
Loading development environment (Rails 2.3.2)
>> Foo.create
2
=> #<Foo id: 2>
>>

How can I use ruby to test this? I tried creating a main.rb, which 'require' foo and foo_observer, but that doesn't seem to work. What am I missing? Thanks for any help anyone can provide.

October 29th, 2010, 04:41 PM

bchin

Registered User

Join Date: Oct 2010

Posts: 2

Time spent in forums: 13 m 30 sec
Reputation Power: 0

well, looks like I can just following this guide, http://guides.rubyonrails.org/testing.html to get my automated testing done. So I followed the guides and re-created all my objects using 'rails generate', but now I'm getting the following error:

Code:

(bchin ~/setup/rails/practice)rails console
/usr/local/lib/ruby/gems/1.9.1/gems/railties-3.0.0/lib/rails/application.rb:63:in `inherited': You cannot have more than one Rails::Application (RuntimeError)
	from /usr/local/lib/ruby/gems/1.9.1/gems/railties-3.0.0/lib/rails/deprecation.rb:7:in `initialize'
	from /usr/local/lib/ruby/gems/1.9.1/gems/railties-3.0.0/lib/rails/deprecation.rb:7:in `new'
	from /usr/local/lib/ruby/gems/1.9.1/gems/railties-3.0.0/lib/rails/deprecation.rb:7:in `run'
	from /home/bchin/setup/rails/ioffer_cl/config/environment.rb:7:in `<top (required)>'
	from /usr/local/lib/ruby/gems/1.9.1/gems/railties-3.0.0/lib/rails/application.rb:103:in `require'
	from /usr/local/lib/ruby/gems/1.9.1/gems/railties-3.0.0/lib/rails/application.rb:103:in `require_environment!'
	from /usr/local/lib/ruby/gems/1.9.1/gems/railties-3.0.0/lib/rails/commands.rb:22:in `<top (required)>'
	from script/rails:6:in `require'
	from script/rails:6:in `<main>'

What does this error mean?

Trouble with Callbacks

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