ActiveRecord Callbacks not firing properly on workers

[jeremycw]

I have a job that basically boils down to this:

def self.perform()
  [100, 30, 14, 5, 2, 3, 1, 1, 1].each do |delay|
    sleep(delay)
    Foo.create
  end
end

At first I had a FooObserver that looked something like this:

FooObserver < ActiveRecord::Observer
  def after_commit(foo)
    do_important_stuff()
  end
end

But I noticed that do_important_stuff was never getting called even though I could see that Foo records were being created.

Then I tried:

Foo < ActiveRecord::Base
  after_commit :do_important_stuff

  #...
end

This way do_important_stuff is firing everytime except the very last time. I figured that maybe the job was terminating before that callback was getting fired. So I added a 5 second sleep to the end of self.perform but still no luck. Any ideas what's going on?

[steveklabnik]

No clue. Just so you know, we've extracted Observers to a plugin in Rails 4 because we consider them to be not a good idea, generally speaking.

I think you should file this bug over at https://github.com/rails/rails-observers