Rails 4 many to many association not working

Question

Ruby on rails newbie here. Trying to create a starter blog app and having trouble with many to many association between my models.

I have 2 models - Post, Category t

Answer 1

Further to the first answer, you need to put associations in your join model (CategoriesPosts) like this:

Class CategoriesPosts  < ActiveRecord::Base
    belongs_to :category
    belongs_to :post
End