Say I have a post model that has_and_belongs_to_many :categories, and a
category model that has_and_belongs_to_many :posts. So I have a
categories_posts table to do the join. That’s all find and dandy.
However I want to be able to find all the posts that belong to a
specific category.
I tried Post.find_by_category(:id) but that doesn’t work.
Does anyone have any insight?
Thanks in advance.