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what is the proper way to loop through a list in a rails view (assuming that you need to check if it is empty or not) -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to

What is the best way to add action after a belongs_to assignment? (Just like ''after_add'' in has_many assignment). I see that there is no callbacks for belongs_to. I have tried overriding parent= : alias :parent_before_mod= :parent= def parent=(the_parent) parent_before_mod = the_parent if save # my actions here end end but when I tried to assign parent, parent_id was not changed. Can someone help? class Company < ActiveRecord::Base has_many :children, :class_name => ''Company'', :foreign_key => ''par...