Use case objects

Version #1

(Use case objects)

https://gist.github.com/2838490

class PostComment
  def initialize(user, entry, attributes)
    @user = user
    @entry = entry
    @attributes = attributes
  end
 
  def post
    @comment = @user.comments.new
    @comment.assign_attributes(@attributes)
    @comment.entry = @entry
    @comment.save!
 
    LanguageDetector.new(@comment).set_language
    SpamChecker.new(@comment).check_spam
    CommentMailer.new(@comment).send_mail
 
    post_to_twitter  if @comment.share_on_twitter?
    post_to_facebook if @comment.share_on_facebook?
 
    @comment
  end
 
  private
 
  def post_to_twitter
    PostToTwitter.new(@user, @comment).post
  end
 
  def post_to_facebook
    PostToFacebook.new(@user, @comment).action(:comment)
  end
end