#drop this in .irbrc
class Object
  def search_methods(string)
    search_results = ["--","CLASS METHODS","--"]
    search_results << self.methods.find_all{ |i| i.match(/#{string}/) }.sort 
    search_results << ["--", "INSTANCE METHODS","--"]
    search_results << self.instance_methods.find_all{ |i| i.match(/#{string}/) }.sort
    return y(search_results)
  end
end

# now just call #Object.search_methods "your_search" in irb to find a method

http://wiki.m001.net/technical/show/.irbrc

This allows you to search any INSTANCE or CLASS methods of any objects including rails models, which is helpful if you want to see the methods that you created yourself.

Search Methods in irb

ruby

Ruby