Add (admin-only) tickets via 'visibile' attribute [migration]

(cherry picked from commit ce0db3d7a736e7bcde480721986dbfb4a82aa083)

app/controllers/admin/tickets_controller.rb

@@ -52,7 +52,12 @@ module Admin
     private
 
     def ticket_params
-      params.require(:ticket).permit(:conference, :title, :url, :description, :conference_id, :price_cents, :price_currency, :price, :registration_ticket)
+      params.require(:ticket).permit(
+        :conference, :conference_id,
+        :title, :url, :description,
+        :price_cents, :price_currency, :price,
+        :registration_ticket, :visible
+      )
     end
   end
 end

app/controllers/conference_registrations_controller.rb

@@ -57,7 +57,7 @@ class ConferenceRegistrationsController < ApplicationController
         sign_in(@registration.user)
       end
 
-      if @conference.tickets.any? && !current_user.supports?(@conference)
+      if @conference.tickets.visible.any? && !current_user.supports?(@conference)
         redirect_to conference_tickets_path(@conference.short_title),
                     notice: 'You are now registered and will be receiving E-Mail notifications.'
       else

app/controllers/conferences_controller.rb

@@ -52,7 +52,7 @@ class ConferencesController < ApplicationController
       end
     end
     if splashpage.include_registrations || splashpage.include_tickets
-      @tickets = @conference.tickets.order('price_cents')
+      @tickets = @conference.tickets.visible.order('price_cents')
     end
     if splashpage.include_lodgings
       @lodgings = @conference.lodgings.order('name')

app/controllers/tickets_controller.rb

@@ -3,7 +3,8 @@
 class TicketsController < ApplicationController
   before_action :authenticate_user!
   load_resource :conference, find_by: :short_title
-  load_resource :ticket, through: :conference
+  before_action :load_tickets
+  authorize_resource :ticket, through: :conference
   authorize_resource :conference_registrations, class: Registration
   before_action :check_load_resource, only: :index
 
@@ -14,4 +15,8 @@ class TicketsController < ApplicationController
       redirect_to root_path, notice: "There are no tickets available for #{@conference.title}!"
     end
   end
+
+  def load_tickets
+    @tickets = @conference.tickets.visible
+  end
 end