Hi all, I'm trying to overwrite a setter method, but am running into some difficulties. This is normally really easy when overwriting a setter for a table column, but in this case it is the setter for an associated object. Here's a hypothetical example: class User < ActiveRecord::Base has_many :posts end class Post < ActiveRecord::Base belongs_to :user def user=(new_user) self[:user] = new_user self[:user_id] = new_user.id # do other stuff (not relevant here) end end Unfortunately `self` only works when modifying table column values, so `self[:user] = new_user` doesn't do anything. The only solution I have at the moment is this... def user=(new_user) self[:user_id] = new_user.id self.reload # do other stuff end ... which isn't ideal, since `self.reload` will have to hit the database. Is there any easier way to update an associated object from within a model? Thanks in advance, Anthony.
on 2006-05-07 19:41
on 2006-05-07 20:18
an idea would be to use alias_method so in your example alias_method 'ar_user=', 'user=' def user=(new_user) # some custom logic here ar_user = new_user end hope this helps.