#409 Active Model Serializers

rails g serializer article
rails g serializer comment

gem 'active_model_serializers'

class ArticleSerializer < ActiveModel::Serializer
  attributes :id, :name, :content, :url
  has_many :comments
  embed :ids, include: true
  delegate :current_user, to: :scope
  
  def url
    article_url(object)
  end
  
  def attributes
    data = super
    data[:edit_url] = edit_article_url(object) if current_user.admin?
    data
  end
end

class CommentSerializer < ActiveModel::Serializer
  attributes :id, :content
end

def show
  @article = Article.find(params[:id])
  respond_to do |format|
    format.html
    format.json { render json: @article }
  end
end

# def default_serializer_options
#   {root: false}
# end

serialization_scope :view_context

protected

def current_user
  OpenStruct.new(admin?: false)
end
helper_method :current_user

<div id="articles" data-articles="<%= json_for @articles %>">

def json_for(target, options = {})
  options[:scope] ||= self
  options[:url_options] ||= url_options
  target.active_model_serializer.new(target, options).to_json
end