Introduce an association for the selected_schedule

Association in Program fot the selected_schedule

app/controllers/admin/schedules_controller.rb

@@ -25,10 +25,10 @@ module Admin
       # if there is not selected schedule we create it
       unless @program.selected_schedule.present?
         schedule = @program.schedules.create
-        @program.selected_schedule = schedule.id
+        @program.selected_schedule = schedule
         @program.save!
       end
-      @schedule_id = @program.selected_schedule
+      @schedule_id = @program.selected_schedule.id
     end
 
     def update

app/controllers/conference_controller.rb

@@ -13,13 +13,13 @@ class ConferenceController < ApplicationController
 
   def schedule
     @rooms = @conference.venue.rooms if @conference.venue
-    unless @program.selected_schedule.present? && @program.events.scheduled(@program.selected_schedule).any?
+    unless @program.selected_schedule.present? && @program.events.scheduled(@program.selected_schedule.id).any?
       redirect_to events_conference_path(@conference.short_title)
     end
 
     @events = @conference.program.events
-    @events_xml = @program.schedules.find(@program.selected_schedule).event_schedules.order(start_time: :asc)
-                  .map(&:event).group_by{ |event| event.scheduled_start_time.to_date } if program.selected_schedule.present?
+    @events_xml = @program.selected_schedule.event_schedules.order(start_time: :asc).map(&:event)
+                  .group_by{ |event| event.scheduled_start_time.to_date } if @program.selected_schedule.present?
     @dates = @conference.start_date..@conference.end_date
     @step_minutes = EventType::LENGTH_STEP.minutes
     @conf_start = 9
@@ -38,7 +38,7 @@ class ConferenceController < ApplicationController
     @dates = @conference.start_date..@conference.end_date
 
     if @program.selected_schedule.present?
-      @events_schedules = @program.schedules.find(@program.selected_schedule).event_schedules.order(start_time: :asc)
+      @events_schedules = @program.selected_schedule.event_schedules.order(start_time: :asc)
     else
       @events_schedules = []
     end

app/models/event.rb

@@ -270,7 +270,7 @@ class Event < ActiveRecord::Base
 
   # returns the event_schedule for this event and for the selected_schedule
   def selected_event_schedule
-    event_schedules.find_by(schedule_id: program.try(:selected_schedule))
+    event_schedules.find_by(schedule_id: program.try(:selected_schedule_id))
   end
 
   private

app/models/program.rb

@@ -8,6 +8,7 @@ class Program < ActiveRecord::Base
   has_many :tracks, dependent: :destroy
   has_many :difficulty_levels, dependent: :destroy
   has_many :schedules, dependent: :destroy
+  belongs_to :selected_schedule, class_name: 'Schedule'
   has_many :events, dependent: :destroy do
     def require_registration
       where(require_registration: true, state: :confirmed)

app/views/conference/_carousel.html.haml

@@ -27,7 +27,7 @@
               %td.room{ style: "height: #{ td_height(@rooms) }px;" }
                 .room.elipsis.break-words{ style: "-webkit-line-clamp: #{ room_lines(@rooms) }; height: #{ room_height(@rooms) }px;" }
                   = room.name
-                - event_schedules = room.event_schedules.select{ |e| (e.schedule_id == @conference.program.selected_schedule) && (e.start_time >= start_time) && (e.start_time < (start_time + number_columns.hour)) }
+                - event_schedules = room.event_schedules.select{ |e| (e.schedule_id == @conference.program.selected_schedule.id) && (e.start_time >= start_time) && (e.start_time < (start_time + number_columns.hour)) }
                 - (1..intervals).each do |i|
                   - if span > 1
                     - span -= 1