Question

In Rails, supposing that the file is already loaded, how it is possible to call my_method from this example from console?

# some_file.rb
class MyClass < ApplicationController::Base
  def my_method(args)

Answer 1

Another, very simple way to do this is to use an instance of ApplicationController itself.

ApplicationController < ActionController::Base
  def example
    "O HAI"
  end
end

Then in the console, you can do the following:

>> ApplicationController.new.example

This will output the following:

O HAI

This, of course, has the restriction of not having access to everything a normal request would, such as the request object itself. If you need this, as the Patrick Klingemann suggested, you could use the debugger… I personally recommend using Pry:

• Pry on RubyGems.org
• RailsCast: Pry with Rails

This is likely much too late for you, but hopefully it will help someone in the future.