Class Readme Example #3

# A Post model serializer, using ::ToJson::Serializer inheritance
class PostSerializer < ::ToJson::Serializer
  include PostSerialization

  # override the serialize method and use the ToJson DSL
  # any arguments passed to encode! or json! are passed into serialize
  def serialize(model)
    put_post_nested model
  end
end

# A Post collection serializer using include ToJson::Serialize approach
class PostsSerializer
  include PostSerialization

  def serialize(collection)
    put_posts collection
  end
end

# define a module so we can mixin Post model serialization concerns
anywhere and avoid temporary serializer objects for collection items
module PostSerialization
  include  ::ToJson::Serialize

  # formatting helper
  def fullname(*names)
    names.join(' ')
  end

  def put_post(post)
    put :title, post.title
    put :body, post.body
    put :author, fullname(post.author.first_name, post.author.last_name)
    put :comments, CommentsSerializer.new(post.comments)
  end

  def put_post_nested(post)
    put :post do
      put_post(post)
    end
  end

  def serialize_posts(posts)
    put :meta do
      put :total_entries, posts.total_entries
      put :total_pages, posts.total_pages
    end
    put :collection, posts do |post|
      put_post post
    end

  end
end