Implement track scheduling

Add track association to schedule
Show schedules in admin sidebar to track organizers
Allow track organizers to manage the schedules of their tracks
Don't allow self-organized track events to be dragged or unscheduled in
a conference schedule
Make scheduled events of self-organized tracks appear semitransparent in
conference schedules
Make the rooms of confirmed self_organized tracks appear semitransparent
and don't allow events to be scheduled to it in the conference schedules
during the dates of its track
Create admin/SchedulesController#new action
Add a button in admin/Schedules#index to create schedules for tracks
Add self_organized scope to Track
Modify Schedules#show to handle track schedules and show a unified
schedule
Allow track organizers to create new schedules for their tracks
Correctly identify scheduled and unscheduled events in Schedules#events
Fix Event#room and Event#time for when the event is scheduled in a track
schedule
Modify Program#selected_event_schedules to include the event_schedules
of selected track schedules
Modify Track#revoke_role_and_cleanup to destroy the track's schedules
and revert its events' state to new
Add tabs for conference and track schedules in admin/Schedules#index
Add button to Create/Show a tracks schedule in Tracks#index and #show
Fix concurrent_events in application_helper because of changes in
Program#selected_event_schedules
Do not take into account cfp_active in Event#valid_track
Modify EventsController#get_tracks accordingly
Enforce cfp_active of track to be enabled for proposals in
ProposalsController#create and #update
Add support for multiple schedules per track
Add selected_schedule_id to Track
Load EventSchedules of selected track schedules for conference schedules
in admin/SchedulesController#show
Modify SchedulesController#show to take into account only the selected
track schedules
Create Event#selected_schedule_id and use it in Event#scheduled? and
Event#time
Validate that an EventSchedule for an event of a self-organized track
belongs to one of the track's schedules
Add 'Manage' button in Tracks#index, #show that sends you to the admin
side of things
Add admin/TracksController#update_selected_schedule to update the
selected_schedule_id of tracks

app/controllers/admin/events_controller.rb

@@ -198,7 +198,7 @@ module Admin
     end
 
     def get_tracks
-      @tracks = Track.accessible_by(current_ability).where(program: @program).confirmed.cfp_active
+      @tracks = Track.accessible_by(current_ability).where(program: @program).confirmed
     end
   end
 end

app/controllers/admin/schedules_controller.rb

@@ -4,14 +4,21 @@ module Admin
     # the schedule of a conference, which should not be accessed in the first place
     load_and_authorize_resource :conference, find_by: :short_title
     load_and_authorize_resource :program, through: :conference, singleton: true
-    load_and_authorize_resource :schedule, through: :program
+    load_and_authorize_resource :schedule, through: :program, except: [:new, :create]
     load_resource :event_schedules, through: :schedule
     load_resource :selected_schedule, through: :program, singleton: true
     load_resource :venue, through: :conference, singleton: true
 
     def index; end
 
+    def new
+      @schedule = @program.schedules.build(track: @program.tracks.new)
+      authorize! :new, @schedule
+    end
+
     def create
+      @schedule = @program.schedules.new(schedule_params)
+      authorize! :create, @schedule
       if @schedule.save
         redirect_to admin_conference_schedule_path(@conference.short_title, @schedule.id),
                     notice: 'Schedule was successfully created.'
@@ -23,9 +30,23 @@ module Admin
 
     def show
       @event_schedules = @schedule.event_schedules
-      @unscheduled_events = @program.events.confirmed - @schedule.events
-      @dates = @conference.start_date..@conference.end_date
-      @rooms = @conference.venue.rooms if @conference.venue
+
+      if @schedule.track
+        track = @schedule.track
+        @unscheduled_events = track.events.confirmed - @schedule.events
+        @dates = track.start_date..track.end_date
+        @rooms = [track.room]
+      else
+        @program.tracks.self_organized.confirmed.each do |t|
+          @event_schedules += t.selected_schedule.event_schedules if t.selected_schedule
+        end
+        self_organized_tracks_events = @program.tracks.self_organized.confirmed.map do |t|
+          t.events.confirmed
+        end
+        @unscheduled_events = @program.events.confirmed - @schedule.events - self_organized_tracks_events.flatten.compact
+        @dates = @conference.start_date..@conference.end_date
+        @rooms = @conference.venue.rooms if @conference.venue
+      end
     end
 
     def destroy
@@ -37,5 +58,11 @@ module Admin
                     error: "Schedule couldn't be deleted. #{@schedule.errors.full_messages.join('. ')}."
       end
     end
+
+    private
+
+    def schedule_params
+      params.require(:schedule).permit(:track_id) if params[:schedule]
+    end
   end
 end

app/controllers/admin/tracks_controller.rb

@@ -101,6 +101,18 @@ module Admin
       update_state(:cancel, "Track #{@track.name} canceled!")
     end
 
+    def update_selected_schedule
+      if @track.update_attributes(params.require(:track).permit(:selected_schedule_id))
+        respond_to do |format|
+          format.js { render json: {} }
+        end
+      else
+        respond_to do |format|
+          format.js { render json: { errors: "The selected schedule couldn't been updated #{@track.errors.to_a.join('. ')}" }, status: 422 }
+        end
+      end
+    end
+
     private
 
     def track_params