osem/app/controllers/admin/callforpapers_controller.rb

class Admin::CallforpapersController < ApplicationController
  before_filter :verify_organizer

  def show
    @cfp = @conference.call_for_papers
    if @cfp.nil?
      @cfp = CallForPapers.new
    end
  end

  def update
    @cfp = @conference.call_for_papers
    if @cfp.update_attributes(params[:call_for_papers])
      redirect_to(admin_conference_callforpapers_path(
                  id: @conference.short_title),
                  notice: 'Call for Papers was successfully updated.')
    else
      redirect_to(admin_conference_callforpapers_path(
                  id: @conference.short_title),
                  alert: "Updating call for papers failed. #{@cfp.errors.to_a.join(". ")}.")
    end
  end

  def create
    @cfp = CallForPapers.new(params[:call_for_papers])
    if @cfp.valid?
      @cfp.save
      @conference.call_for_papers = @cfp
      redirect_to(admin_conference_callforpapers_path(
                  id: @conference.short_title),
                  notice: 'Call for Papers was successfully created.')
    else
      redirect_to(admin_conference_callforpapers_path(
                  id: @conference.short_title),
                  alert: "Creating the call for papers failed. #{@cfp.errors.to_a.join(". ")}.")
    end
  end
end