Invoke rake task from ActiveRecord observer

Question

Can I do the following?

def ModelObserver < ActiveRecord

   def after_save
     Rake::Task[name].invoke
   end

end

At the moment, this returns the following error:

Don't know how to build task 'name'

Any idea?

Answer 1

Use the system command :

def ModelObserver < ActiveRecord

   def after_save
     system "rake #{name}"
   end

end

Answer 2

I suppose you have to load the Rake environment first, and the Rakefile. I would not try to invoke the fullblown command line to do that. You probably need to use "import" as can be found in the Rake API

Answer 3

Consider using delayed job or similar plugin to handle background execution. In observer (or controller) just notify background job daemon, that it should take care of some action, instead of running this task directly.