One user one registration ticket

A user cannot have more than one registration ticket per conference.

app/controllers/ticket_purchases_controller.rb

@@ -19,7 +19,7 @@ class TicketPurchasesController < ApplicationController
                     error: 'Please get at least one ticket to continue.'
       end
     else
-      redirect_to conference_conference_registration_path(@conference.short_title),
+      redirect_to conference_tickets_path(@conference.short_title),
                   error: "Oops, something went wrong with your purchase! #{message}"
     end
   end

app/models/ticket_purchase.rb

@@ -5,7 +5,8 @@ class TicketPurchase < ActiveRecord::Base
   belongs_to :payment
 
   validates :ticket_id, :user_id, :conference_id, :quantity, presence: true
-
+  validate :one_registration_ticket_per_user
+  validate :registration_ticket_already_purchased, on: :create
   validates :quantity, numericality: { greater_than: 0 }
 
   delegate :title, to: :ticket
@@ -25,18 +26,21 @@ class TicketPurchase < ActiveRecord::Base
 
   def self.purchase(conference, user, purchases)
     errors = []
-    ActiveRecord::Base.transaction do
-      conference.tickets.each do |ticket|
-        quantity = purchases[ticket.id.to_s].to_i
-        # if the user bought the ticket and is still unpaid, just update the quantity
-        purchase = if ticket.bought?(user) && ticket.unpaid?(user)
-                     update_quantity(conference, quantity, ticket, user)
-                   else
-                     purchase_ticket(conference, quantity, ticket, user)
-                   end
-
-        if purchase && !purchase.save
-          errors.push(purchase.errors.full_messages)
+    if count_purchased_registration_tickets(conference, purchases) > 1
+      errors.push('You cannot buy more than one registration tickets.')
+    else
+      ActiveRecord::Base.transaction do
+        conference.tickets.each do |ticket|
+          quantity = purchases[ticket.id.to_s].to_i
+          # if the user bought the ticket and is still unpaid, just update the quantity
+          purchase = if ticket.bought?(user) && ticket.unpaid?(user)
+                       update_quantity(conference, quantity, ticket, user)
+                     else
+                       purchase_ticket(conference, quantity, ticket, user)
+                     end
+          if purchase && !purchase.save
+            errors.push(purchase.errors.full_messages)
+          end
         end
       end
     end
@@ -71,6 +75,18 @@ class TicketPurchase < ActiveRecord::Base
     end
     Mailbot.ticket_confirmation_mail(self).deliver_later
   end
+
+  def one_registration_ticket_per_user
+    if ticket.try(:registration_ticket?) && quantity != 1
+      errors.add(:quantity, 'cannot be greater than one for registration tickets.')
+    end
+  end
+
+  def registration_ticket_already_purchased
+    if ticket.try(:registration_ticket?) && user.tickets.for_registration(conference).present?
+      errors.add(:quantity, 'cannot be greater than one for registration tickets.')
+    end
+  end
 end
 
 private
@@ -79,3 +95,9 @@ def set_week
   self.week = created_at.strftime('%W')
   save!
 end
+
+def count_purchased_registration_tickets(conference, purchases)
+  conference.tickets.for_registration.inject(0) do |sum, registration_ticket|
+    sum + purchases[registration_ticket.id.to_s].to_i
+  end
+end

app/models/user.rb

@@ -51,7 +51,11 @@ class User < ActiveRecord::Base
   has_many :events_registrations, through: :registrations
   has_many :ticket_purchases, dependent: :destroy
   has_many :payments, dependent: :destroy
-  has_many :tickets, through: :ticket_purchases, source: :ticket
+  has_many :tickets, through: :ticket_purchases, source: :ticket do
+    def for_registration conference
+      where(conference: conference, registration_ticket: true).first
+    end
+  end
   has_many :votes, dependent: :destroy
   has_many :voted_events, through: :votes, source: :events
   has_many :subscriptions, dependent: :destroy

app/views/conference_registrations/show.html.haml

@@ -109,7 +109,7 @@
           You haven't bought any tickets.
           = link_to 'Please get some tickets to support us!', conference_tickets_path(@conference.short_title)
           %p
-            (Your participation won't be valid without getting a ticket)
+            (Your participation won't be valid without getting a registration ticket)
 
   .row
     .col-md-12

app/views/tickets/_ticket.html.haml

@@ -1,5 +1,5 @@
 %tr
-  %td.col-sm-8.col-md-6
+  %td.col-sm-8.col-md-4
     .media
       .media-body
         %h4.media-heading
@@ -7,9 +7,14 @@
         %h5.media-heading
         - unless ticket.description.blank?
           = markdown(ticket.description)
+  %td.col-sm-1.col-md-2.text-center
+    = ticket.registration_ticket? ? 'Yes' : 'No'
   %td.col-sm-1.col-md-1
-    = text_field_tag("tickets[][#{ticket.id}]", 0,
-      type: 'number', min: 0, class: "form-control quantity", 'data-id' => ticket.id)
+    - options = { type: 'number', min: 0, class: "form-control quantity", 'data-id' => ticket.id }
+    - if ticket.registration_ticket?
+      - options[:max] = 1
+      - options[:disabled] = current_user.tickets.for_registration(ticket.conference).present?
+    = text_field_tag("tickets[][#{ticket.id}]", 0, options)
   %td.col-sm-1.col-md-1.text-center
     = ticket.price.symbol
     %span{id: "price_#{ticket.id}"}

app/views/tickets/index.html.haml

@@ -14,6 +14,7 @@
           %thead
             %tr
               %th Ticket
+              %th Registration Ticket
               %th Quantity
               %th Price
               %th Total
@@ -21,6 +22,7 @@
           - @conference.tickets.each do |ticket|
             = render partial: 'ticket', f: f, locals: {ticket: ticket}
           %tr
+            %td
             %td
             %td
             %td.col-sm-1.col-md-1.text-center
@@ -46,4 +48,4 @@
     .col-md-13
       %p.text-muted.text-center
         %small
-          * Getting a ticket is mandatory. Your participation will not be valid until you get a ticket.
+          * Getting a registration ticket is mandatory. Your participation will not be valid until you get a registration ticket.

spec/features/ticket_purchases_spec.rb

@@ -3,7 +3,9 @@ require 'spec_helper'
 feature Registration do
   let!(:ticket) { create(:ticket) }
   let!(:free_ticket) { create(:ticket, price_cents: 0) }
-  let!(:conference) { create(:conference, title: 'ExampleCon', tickets: [ticket, free_ticket], registration_period: create(:registration_period, start_date: 3.days.ago)) }
+  let!(:first_registration_ticket) { create(:registration_ticket, price_cents: 0) }
+  let!(:second_registration_ticket) { create(:registration_ticket, price_cents: 0) }
+  let!(:conference) { create(:conference, title: 'ExampleCon', tickets: [ticket, free_ticket, first_registration_ticket, second_registration_ticket], registration_period: create(:registration_period, start_date: 3.days.ago)) }
   let!(:participant) { create(:user) }
 
   context 'as a participant' do
@@ -106,6 +108,38 @@ feature Registration do
         expect(purchase.quantity).to eq(5)
         expect(purchase.paid).to be true
       end
+
+      scenario 'purchases more than one registration tickets of a single type' do
+        visit root_path
+        click_link 'Register'
+
+        expect(current_path).to eq(new_conference_conference_registration_path(conference.short_title))
+        click_button 'Register'
+
+        fill_in "tickets__#{first_registration_ticket.id}", with: '5'
+        expect(current_path).to eq(conference_tickets_path(conference.short_title))
+
+        click_button 'Continue'
+
+        expect(current_path).to eq(conference_tickets_path(conference.short_title))
+      end
+
+      scenario 'purchases one registration ticket of a different types' do
+        visit root_path
+        click_link 'Register'
+
+        expect(current_path).to eq(new_conference_conference_registration_path(conference.short_title))
+        click_button 'Register'
+
+        fill_in "tickets__#{first_registration_ticket.id}", with: '1'
+        fill_in "tickets__#{second_registration_ticket.id}", with: '1'
+        expect(current_path).to eq(conference_tickets_path(conference.short_title))
+
+        click_button 'Continue'
+
+        expect(flash).to eq('Oops, something went wrong with your purchase! You cannot buy more than one registration tickets.')
+        expect(current_path).to eq(conference_tickets_path(conference.short_title))
+      end
     end
 
     context 'who is registered' do

spec/models/ticket_purchase_spec.rb

@@ -34,6 +34,22 @@ describe TicketPurchase do
     it 'is valid with a quantity greater than zero' do
       should allow_value(1).for(:quantity)
     end
+
+    describe 'one_registration_ticket_per_user' do
+      let(:registration_ticket) { create(:registration_ticket) }
+      let(:ticket_purchase) { build(:ticket_purchase, ticket: registration_ticket, quantity: 1) }
+
+      it 'it is valid, if quantity for registration tickets is less than or equal to one' do
+        expect(ticket_purchase.valid?).to eq true
+      end
+
+      it 'it is not valid, if quantity for registration tickets is greater than to one' do
+        ticket_purchase.quantity = 4
+
+        expect(ticket_purchase.valid?).to eq false
+        expect(ticket_purchase.errors[:quantity]).to eq ['cannot be greater than one for registration tickets.']
+      end
+    end
   end
 
   describe 'self#purchase' do