You could try a state machine approach but frankly I would probably
wrap all that in a separate business process class so the code is all
in one place.



On Wed, Oct 31, 2012 at 11:55 AM, Sebastian Porto <[email protected]> wrote:
> Hi All
>
> Someone please point me in the right direction with this.
>
> I would like to implement an event / listener pattern in parts of my
> application. But I don't quite like the Observer pattern as it is as it
> hides the flow, I will like something explicit, where you trigger events
> manually. See made up code below:
>
>     class User < ActiveRecord::Base
>         def something
>             trigger :on_something, name
>         end
>     end
>
>     class UserObserver < ActiveRecord::Observer
>         def on_something(name)
>             ...
>         end
>     end
>
> I have been looking at
>
> custom callbacks
> http://api.rubyonrails.org/classes/ActiveSupport/Callbacks/ClassMethods.html#method-i-define_callbacks
>
> Observers
> http://api.rubyonrails.org/classes/ActiveRecord/Observer.html
>
> But nothing quite does what I want, or I don't know how to hook it together.
> Any suggestions / gems on this will be appreciated.
>
> Thanks,
> Sebastian
>
>
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