how add alias to .irbrc?

Question

I want add alias to my .irbrc similary like

alias q exit

(work).

But I want to run some command, for example

alias cleandb="DatabaseCleaner.clean"

(don't work). How execute this?

Answer 1

Reopen the kernel module. Something like the following:

module Kernel

   def q
     exit
   end

end