The First Commandment of Parameters June 3rd, 2008

def transform_params(params)
  params.delete(:action)
  params.delete(:controller)
  # Other code, and then...
  params
end

It took two hours before I realized those missing parameters weren't Rails' fault. Repeat after me:

"Parameters are passed by reference. Thou Shalt not modify without warning."

If you're going trash your gifts, try "transform_params!". Destructive methods should end in an exclamation points.