I have 2 models: User and Article.
I have this relationship:
* User has many articles (and Article belongs to user)
* User has and belongs to many articles (and Article habtm users)
But this is tricky because of: current_user.articles ...this can return
articles thanks to *has_many* and *has_and_belongs_to* relations. So
there's a collision.
How can I ask articles thanks has_and_belongs_to explicitly. And thanks
has_many only too?