Gist refactory

controller_with_manager.rb

#pseudo codigo em topic_manager

def add_post(forem_user,post_attributes)
  @post = @topic.posts.build(post_attributes)
  @post.user = forem_user
  @post.save
end


class PostsController < Forem::ApplicationController
  before_filter :authenticate_forem_user
  before_filter :find_topic
  before_filter :block_spammers, :only => [:new, :create]
  before_filter :check_topic_locked


  def create
    authorize! :reply, @topic

    @topic_manager = TopicManager.new(@topic)

    if @topic_manager.add_post(forem_user,params[:post])
      flash[:notice] = t("forem.post.created")
      redirect_to forum_topic_url(@topic.forum, @topic, :page => last_page)
    else
      params[:reply_to_id] = params[:post][:reply_to_id]
      flash.now.alert = t("forem.post.not_created")
      render :action => "new"
    end
  end
end


  private

  def check_topic_locked
    if @topic.locked?
      flash.alert = t("forem.post.not_created_topic_locked")
      redirect_to [@topic.forum, @topic]
    end
  end

  def find_topic
    @topic = Forem::Topic.find(params[:topic_id])
  end

  def block_spammers
    if forem_user.forem_state == "spam"
      flash[:alert] = t('forem.general.flagged_for_spam') + ' ' +
                        t('forem.general.cannot_create_post')
      redirect_to :back
    end
  end

  def last_page
    (@topic.posts.count.to_f / Forem.per_page.to_f).ceil
  end
end