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Editorial Team
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Asked: 2026-05-26T12:00:13+00:00

Here is my tiny Rails3 controller: class HomeController < ApplicationController def index HomeController.delay.do_stuff end

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Here is my tiny Rails3 controller:

class HomeController < ApplicationController
  def index
    HomeController.delay.do_stuff
  end
  def self.do_stuff
    puts "Hello"
  end
end

Upon accessing index, the job gets correctly inserted in database:

--- !ruby/struct:Delayed::PerformableMethod 
object: !ruby/object:Class HomeController
method_name: :do_stuff

PROBLEM: When executing bundle exec rake jobs:work, I get:

Class#do_stuff failed with NoMethodError:
    undefined method `do_stuff' for #<Class:0x0000000465f910>

Despite the fact that HomeController.do_stuff works perfectly. Any idea?

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1 Answer

  1. Editorial Team

    See https://github.com/collectiveidea/delayed_job/wiki/Common-problems#wiki-undefined_method_xxx_for_class in documentation.

    It seems that you should have

    ..object: !ruby/class HomeController method_name ...

    in the database, but you have

    ..object: !ruby/object:Class HomeController method_name ...

    instead. Which is bad.

    Even delayed_job author don’t know the reason. It somehow depends on the webserver you run in on. Try the wiki’s recommendation.

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