Rails - Dec 2005 - ActiveRecord::Observer problem

Hi all,

I have a problem with an observer.  I have a simple observer...

class ActivityObserver < ActiveRecord::Observer
  observe Customer
 
  def after_create(model)
    bind_params(model)
    @al.action = "create"
    @al.save
    logger "#{model.id} : created"
  end

private
  def bind_params(model)
    @al = ActivityLog.new
    @al.user_id = User.current.id
    @al.customer_id = User.current.customer_id
    @al.object_type = model.class.name
    @al.object_id = model.id
  end
end

and

class ActivityLog < ActiveRecord::Base
  set_table_name "activity_log"
end

in my local_environment.rb

require ''lib/activity_observer''
ActivityObserver.instance

why does nothing ever seem to happen when I create a new Customer?  I 
expect the database to be populated and the log to be updated, but 
neither happens

Looking at the WhitespaceKiller and the api docs, I don''t t hink
I''m
doing anything wrong, but help would be greatly appreciated

Kev

Kev Jackson wrote:
> Hi all,
>
> I have a problem with an observer.  I have a simple observer...
>
> class ActivityObserver < ActiveRecord::Observer
>  observe Customer
>
>  def after_create(model)
>    bind_params(model)
>    @al.action = "create"
>    @al.save
>    logger "#{model.id} : created"
>  end
>
> private
>  def bind_params(model)
>    @al = ActivityLog.new
>    @al.user_id = User.current.id
>    @al.customer_id = User.current.customer_id
>    @al.object_type = model.class.name
>    @al.object_id = model.id
>  end
> end
>
> and
>
> class ActivityLog < ActiveRecord::Base
>  set_table_name "activity_log"
> end
>
> in my local_environment.rb
>
> require ''lib/activity_observer''
> ActivityObserver.instance
>
> why does nothing ever seem to happen when I create a new Customer?  I 
> expect the database to be populated and the log to be updated, but 
> neither happens
>
> Looking at the WhitespaceKiller and the api docs, I don''t t hink
I''m
> doing anything wrong, but help would be greatly appreciated
Just some more info on this, if I run script/console, I can create 
Customers from the console and the observer fires and stores the data 
correctly - so it''s only not doing anything within WEBrick

Kev

Kev Jackson wrote:
> Kev Jackson wrote:
>
>> Hi all,
>>
>> I have a problem with an observer.  I have a simple observer...
>>
>> class ActivityObserver < ActiveRecord::Observer
>>  observe Customer
>>
>>  def after_create(model)
>>    bind_params(model)
>>    @al.action = "create"
>>    @al.save
>>    logger "#{model.id} : created"
>>  end
>>
>> private
>>  def bind_params(model)
>>    @al = ActivityLog.new
>>    @al.user_id = User.current.id
>>    @al.customer_id = User.current.customer_id
>>    @al.object_type = model.class.name
>>    @al.object_id = model.id
>>  end
>> end
>>
>> and
>>
>> class ActivityLog < ActiveRecord::Base
>>  set_table_name "activity_log"
>> end
>>
>> in my local_environment.rb
>>
>> require ''lib/activity_observer''
>> ActivityObserver.instance
>>
>> why does nothing ever seem to happen when I create a new Customer?  I 
>> expect the database to be populated and the log to be updated, but 
>> neither happens
>>
>> Looking at the WhitespaceKiller and the api docs, I don''t t
hink I''m
>> doing anything wrong, but help would be greatly appreciated
>
>
> Just some more info on this, if I run script/console, I can create 
> Customers from the console and the observer fires and stores the data 
> correctly - so it''s only not doing anything within WEBrick
Solved, for anyone else out there struggling...
class ApplicationController < ActionController::Base
  observer :activity_observer
...

end

On Dec 7, 2005, at 4:19 AM, Kev Jackson wrote:
>
> Solved, for anyone else out there struggling...
> class ApplicationController < ActionController::Base
>  observer :activity_observer
> ...
>
> end
I''m a little late (trying to keep up with this list is growing 
difficult), but yes.
Unfortunately, when observers are loaded through 
ActiveRecord::Base.observers (which
is how config.active_record.observers works), the observers do not get 
set up with
the dependencies system and do not reload in development mode.  It''s 
rather a pain but
the work around is, as you''ve found, to set them on a controller such 
that they''ll be
reloaded along with the controller class.

Just throwing some "whys" at your answer.

-- 
Scott Barron
Lunchbox Software
http://lunchboxsoftware.com
http://lunchroom.lunchboxsoftware.com
http://rubyi.st