polymorphic associations such as a comment model
Originally written by kevinpfromnm on 2010-08-04.
This question answered by recipe: Simple Cross-Model Comments
I am trying to add comments to a hobo project. I would like multiple model to be commentable.
So I create a comment model with
belongs_to :commentable, :polymorphic => true
and to each commentable thing, I had
has_many :comments, :as => :commentable
I wonder now how to create comments.
I would like to create a link “add comment” to the other models, and this link would contain the right :container_id and :container_type. I would also like these fields not be editable.
How should I do that? Should I create my own new and create controllers that extract the right parameters? Is there something more Hobo-y to do?
How to ensure that the field are not editable? (Usually, I use after_user_new callback + permission for create, but I can’t see how to use it in such a setting)
Edit this page