On Oct 14, 4:40 am, Serafino Picozzi <[EMAIL PROTECTED] s.net> wrote: > Hi! > > I have a problem related to polymorphic associations. > Currently in my routes i define the following: > > map.resources :articles do |articles| > articles.resources :comments > end > > map.resources :posts do |posts| > posts.resources :comments > end > > I have basically posts and articles models which relate to the > polymorphic model comment. > Routes are generated as I expect to, but the problem resides in the > comments_controller, since in this controller I'm not able to figure out > if I'm creating a comment for a post or for an article. > > Is there a (possibly clean) way to solve this?
You can check for the presence of params[:post_id] or params[:article_id] to discover the route that got triggered. I generally use a before_filter: class CommentsController < ApplicationController before_filter :determine_parent before_filter :ensure_valid_comment def determine_parent @parent = Article.find_by_id(params[:article_id]) || Post.find(params[:post_id] end def ensure_valid_comment return unless params[:id] raise ActiveRecord::RecordNotFound unless @parent.comments.find(params[:id]) end end This will first look for an article, and if that fails (returns nil), it will assume it's a post. Raises an exception of neither are found. The second filter helps ensure that someone didn't mess with the url. Does this help? Jeff purpleworkshops.com softiesonrails.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 [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
