module ActiveRecord::NoTouching::ClassMethods  
        
        Public instance methods
Lets you selectively disable calls to touch for the duration of a block.
Examples
ActiveRecord::Base.no_touching do
  Project.first.touch  # does nothing
  Message.first.touch  # does nothing
end
Project.no_touching do
  Project.first.touch  # does nothing
  Message.first.touch  # works, but does not touch the associated project
end
Source code GitHub
# File activerecord/lib/active_record/no_touching.rb, line 23
def no_touching(&block)
  NoTouching.apply_to(self, &block)
end