How can I expose a Mongoid embedded collection?

Question

I have mongoid setup in my rails3 app, and have created 2 models. One model is user, and the other model is article.

Since I each user can create many articles, I have put:

embedded_in :user

in model/article.rb file, and:

embeds_many :articles

in model/user.rb file.

Now, if I access article by 'app_url/articles/random_article_id' I get the following error.

Access to the collection for Article is not allowed since it is an embedded document, please access a collection from the root document.

While I want to maintain relationship, I want articles to be accessible to any people. How can I do that??