main_controller.rb

本书源码对于学习RUBY网络编程语言非常有帮助。

class MainController < ApplicationController

  helper :work, :composer, :instrument
  def welcome
    @composers = Composer.find(:all).sort_by do |composer|
      [composer.last_name, composer.first_name, composer.middle_name]
    end
    @periods = Work.all_periods
    @instruments = Instrument.find(:all, :order => "name ASC" )
  end

  def show_period
    @period = params[:id]
    works = Work.find(:all).select do |work|
      (work.period == @period) || (work.century == @period)
    end
    @editions = Edition.of_works(works)
  end
end