gistfile1.rb

# These methods are inteded to extend any relationship owned
# by a another User
# Example
# class User
#   has_manny :comments, :extend => OwnedByOtherUserRelationshipExtension
# end
module OwnedByOtherUserRelationshipExtension
  
  # creates magic methods like these
  # user.comments.by_blocked_users
  # # => user.comments.select{ |c| user.blocking?(c.user) }
  #
  # user.comments.not_by_idolized_users
  # # => user.comments.reject{ |c| user.idolizing?(c.user) }
  #
  # user.subscribers.not_with_idolized_users
  # # => user.subscribers.reject{ |c| user.idolizing?(c.user) }
  def method_missing(method, *args)
    
    if matches = method.to_s.match(/^(not_)?(?:[a-z]+)_([a-z]+)_([a-z]+)/) # and proxy_owner.responds_to?("#{state}?".to_sym) # and !self.empty? and self.first.responds
      puts matches.to_a.inspect
      method, with_or_without, state, thing = matches.to_a
      matcher = lambda{ |associated_model|
        proxy_owner.send("#{state.sub(/ed$/,'ing')}?".to_sym, associated_model.send(thing.singularize))
      }      
      return with_or_without.nil? ? self.select(&matcher) : self.reject(&matcher)
    end
    
    super
  end
  
end