ensl.org/app/controllers/weeks_controller.rb

class WeeksController < ApplicationController
  before_action :get_week, except: [:new, :create]

  def new
    @week = Week.new
    @week.contest = Contest.find(params[:id])
    raise AccessError unless @week.can_create? cuser
  end

  def edit
    raise AccessError unless @week.can_update? cuser
  end

  def create
    @week = Week.new(Week.params(params, cuser))
    raise AccessError unless @week.can_create? cuser

    if @week.save
      flash[:notice] = t(:weeks_create)
      redirect_to @week.contest
    else
      render :new
    end
  end

  def update
    raise AccessError unless @week.can_update? cuser

    if @week.update_attributes(Week.params(params, cuser))
      flash[:notice] = t(:weeks_update)
      redirect_to @week.contest
    else
      render :edit
    end
  end

  def destroy
    raise AccessError unless @week.can_destroy? cuser
    @week.destroy
    redirect_to_back
  end

  private

  def get_week
    @week = Week.find(params[:id])
  end
end