Single Table Inheritance Sample

001_create_articles.rb

class CreateArticles < ActiveRecord::Migration
  self.up
    create_table :articles do |t|
      t.string :title
      t.text :body
      t.string :type

      t.timestamps
    end
  end

  self.down
    drop_table :articles
  end
end

single_table_inheritance.rb

# article.rb
class Article < ActiveRecord::Base
end

# post.rb
class Post < Article
end

# page.rb
class Page < Article
end

---

> Post.all
=> [<Post>, <Post>]

> Page.all
=> [<Page>, <Page>]