Jon Hope wrote: > This could be a lot simpler than I think and I'm just missing something > obvious! > > > I'm working on a creative collaboration app whereby one user could > submit a Story and this can then be forked by another user and worked on > seperately. To acheive this I have a has_many association within the > same Story model as such: > > class Story < ActiveRecord::Base > > has_many :forked_stories, :class_name => 'Story', :foreign_key => > :parent_story_id > > belongs_to :parent_story > > end > > In this way if a single story is an original it's parent_story_id will > be nil. Similarly, if I call @story.forked_stories I can get a > collection of all the stories that have been forked from the current > one, or @story.parent_story will return the story from which it has been > forked.
So you have a tree structure of arbitrary depth? > > What I want is to be able to return all the forked_stories and their > forked_stories for a given Story and I'm finding this very difficult > since they're all based on the same model. I keep running into dead > ends. If I can return them to a certain depth as well that'd be great, > so I've been trying to write a method that accepts a depth parameter but > the crazy loops are frying my brain. There is a less obvious but ultimately much simpler way to do this. Use a nested-set data structure, which will make what you're talking about pretty easy. The awesome_nested_set plugin would be just what you need. > > Perhaps there's something I can do with routes that would solve the > problem? No. Your issues have to do with data structure, not routing. Best, -- Marnen Laibow-Koser http://www.marnen.org [email protected] -- 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 [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 -~----------~----~----~----~------~----~------~--~---
