How to solve the `Object doesn't support #inspect` error?

Question

I am using rails v3.2.2 and I get a strange error when I try to load associated records.

The following is the Terminal input/output I get:

1.9.2-p318         


        

Answer 1

The problem seems to be solved by stating the following in my Category::Article::ArticleRelationship:

class Category::Article::ArticleRelationship < ActiveRecord::Base
  belongs_to :article,
    :class_name    => '::Article', # note I added '::'
    :foreign_key   => 'article_id'
end

but I didn't understand why?