modify controllers and models to just save paid ticket purchases

app/controllers/conference_registrations_controller.rb

@@ -28,8 +28,10 @@ class ConferenceRegistrationsController < ApplicationController
   end
 
   def show
-    @total_price = Ticket.total_price(@conference, current_user)
+    TicketPurchase.destroy_all(user_id: current_user.id, conference_id: @conference.id, paid: 'f')
+    @total_price = Ticket.total_price(@conference, current_user, 't')
     @tickets = current_user.ticket_purchases.where(conference_id: @conference.id)
+    @ticket_payments = @tickets.group_by(&:payment_id)
   end
 
   def edit; end

app/controllers/ticket_purchases_controller.rb

@@ -6,9 +6,8 @@ class TicketPurchasesController < ApplicationController
   def create
     message = TicketPurchase.purchase(@conference, current_user, params[:tickets][0])
     if message.blank?
-      if current_user.ticket_purchases.any?
-        redirect_to conference_conference_registration_path(@conference.short_title),
-                    notice: "Thank you for supporting #{@conference.title} by purchasing a ticket."
+      if current_user.ticket_purchases.where(paid: 'f').any?
+        redirect_to new_conference_payment_path, notice: 'Please pay here to purchase tickets.'
       else
         redirect_to conference_conference_registration_path(@conference.short_title)
       end