Routing helper methods from a model

Question

Comment belongs_to Article, belongs to Question etc.

I need to return the path to Item, that has a comment in question.

class Comment < ActiveRecord::Base
   belongs_to :commentable, :polymorphic => true

   def commentable_path
     return case self.commentable_type
       when "Article": article_path(self.commentable)
       when "Question": question_path(self.commentable)
     end
   end
end

When article_path will be executed from Comment model, i get following error:

undefined method `article_path' for #

How to utilize routing helper methods from a model ?

Thanks.

possible duplicate of [Can Rails Routing Helpers (i.e. mymodel_path(model)) be Used in Models?](http://stackoverflow.com/questions/341143/can-rails-routing-helpers-i-e-mymodel-pathmodel-be-used-in-models) — AntonAL, Mar 05 '11 at 08:21

score 0 · Answer 1 · answered Mar 05 '11 at 11:17

0

Why would you do this?

In your controllers / views use polymorphic routing instead:

<%= link_to "View comment", [@commentable, comment] %>

answered Mar 05 '11 at 11:17

Ryan Bigg

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Thanks. Did't know about polymorphic route. – AntonAL Mar 05 '11 at 12:24

Routing helper methods from a model

1 Answers1