gistfile1.rb

class CreatePosts < ActiveRecord::Migration
  def change
    create_table :posts do |t|
      t.references :blog, :null => false
      t.datetime :post_date, :null => false
      t.string :url, :null => false
      t.string :author
      t.string :title, :null => false
      t.attachment :image, :null => false
      t.text :body

      t.timestamps
    end
    add_index :posts, :blog_id
  end
end