class Content
  include MongoMapper::Document
  include Versioned
  include Grip

  key :_type, String
  key :image
  key :category_id, ObjectId
  timestamps!

  many        :tags, :as => :content
  belongs_to  :category

  def tag_list
    tags.collect(&:name).join(", ")
  end

  def tag_list=(tag_str)
    self.tags = []
    tag_str.split(", ").collect{|n| Tag.new(:name=>n)}.each do |tag|
      tags << tag
    end
    save
    tags
  end

end