async-loading-in-router.coffee

App.Router.map ->
  @resource 'filteredArticles', path: '/:filter'

App.FilteredArticlesRoute = Ember.Route.extend
  model: (params) ->
    blog = App.Blog.find(1) # get the user's Blog singleton
    property = switch params.filter
      when 'published' then 'publishedArticles'
      when 'draft' then 'drafts'
      when 'all' then 'articles'
    # Return the list of articles from the `blog` record.
    # But `blog` hasn't necessarily finished loading :(
    blog.get(property)

# In general: How can we return something from `model` that needs
# asynchronous callbacks to load?