splinter_cell:
  id: 1
  category_id: 1
  name: Splinter Cell
  author: Tom Clancy
  published_on: <%= Date.today - 1.year %>

ruby:
  id: 2
  category_id: 2
  name: Ruby for Dummies
  author: Peter McPeterson
  published_on: <%= Date.today - 2.years %>