You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: ambiguity_controller.rb
    path of file: ./repos/phishin/app/controllers
    
    the code of the file until where you have to start completion: class AmbiguityController < ApplicationController
  include Ambiguity::Date
  include Ambiguity::DayOfYear
  include Ambiguity::Year
  include Ambiguity::YearRange
  include Ambiguity::SongTitle
 
    
  def order_by_for_tracks # rubocop:disable Metrics/MethodLength
    @order_by =
      case params[:sort]
      when 'title'
        { title: :asc }
      when 'shows.date asc', 'shows.date desc'
        params[:sort]
      when 'likes'
        { likes_count: :desc }
      when 'duration'
        { duration: :desc }
      end