Add EPC QR code to ticket show page

Gemfile.lock

@@ -7,7 +7,7 @@ GIT
 
 GIT
   remote: https://github.com/ZeusWPI/rails_style.git
-  revision: 7101522ddc0f7e4cf13235a6e7a7318f04253443
+  revision: 33ea5008e49be142ad490c5b572ef4b3f6436f23
   specs:
     rails_style (0.0.1)
       bundler (>= 2.1.4)
@@ -161,7 +161,7 @@ GEM
       rails-dom-testing (>= 1, < 3)
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
-    json (2.6.2)
+    json (2.6.3)
     jwt (2.3.0)
     launchy (2.5.0)
       addressable (~> 2.7)
@@ -232,8 +232,8 @@ GEM
     paper_trail (14.0.0)
       activerecord (>= 6.0)
       request_store (~> 1.4)
-    parallel (1.22.1)
-    parser (3.1.2.1)
+    parallel (1.23.0)
+    parser (3.2.2.0)
       ast (~> 2.4.1)
     poltergeist (1.18.1)
       capybara (>= 2.1, < 4)
@@ -300,7 +300,7 @@ GEM
       actionview (>= 5)
     redis-client (0.14.1)
       connection_pool
-    regexp_parser (2.6.0)
+    regexp_parser (2.8.0)
     request_store (1.5.1)
       rack (>= 1.4)
     responders (3.1.0)
@@ -311,30 +311,33 @@ GEM
       chunky_png (~> 1.0)
       rqrcode_core (~> 1.0)
     rqrcode_core (1.2.0)
-    rubocop (1.36.0)
+    rubocop (1.50.2)
       json (~> 2.3)
       parallel (~> 1.10)
-      parser (>= 3.1.2.1)
+      parser (>= 3.2.0.0)
       rainbow (>= 2.2.2, < 4.0)
       regexp_parser (>= 1.8, < 3.0)
       rexml (>= 3.2.5, < 4.0)
-      rubocop-ast (>= 1.20.1, < 2.0)
+      rubocop-ast (>= 1.28.0, < 2.0)
       ruby-progressbar (~> 1.7)
-      unicode-display_width (>= 1.4.0, < 3.0)
-    rubocop-ast (1.21.0)
-      parser (>= 3.1.1.0)
+      unicode-display_width (>= 2.4.0, < 3.0)
+    rubocop-ast (1.28.0)
+      parser (>= 3.2.1.0)
+    rubocop-capybara (2.17.1)
+      rubocop (~> 1.41)
     rubocop-minitest (0.22.2)
       rubocop (>= 0.90, < 2.0)
-    rubocop-rails (2.16.1)
+    rubocop-rails (2.19.1)
       activesupport (>= 4.2.0)
       rack (>= 1.1)
       rubocop (>= 1.33.0, < 2.0)
-    rubocop-rspec (2.13.2)
+    rubocop-rspec (2.20.0)
       rubocop (~> 1.33)
+      rubocop-capybara (~> 2.17)
     ruby-graphviz (1.2.5)
       rexml
     ruby-ole (1.2.12.2)
-    ruby-progressbar (1.11.0)
+    ruby-progressbar (1.13.0)
     ruby2_keywords (0.0.5)
     sass-rails (6.0.0)
       sassc-rails (~> 2.1, >= 2.1.1)
@@ -398,7 +401,7 @@ GEM
       concurrent-ruby (~> 1.0)
     uglifier (4.2.0)
       execjs (>= 0.3.0, < 3)
-    unicode-display_width (2.3.0)
+    unicode-display_width (2.4.2)
     validates_timeliness (6.0.0)
       activemodel (>= 6.0.0, < 7)
       timeliness (>= 0.3.10, < 1)

app/actions/generate_epc_qr.rb

@@ -5,36 +5,18 @@
 require 'chunky_png'
 
 class GenerateEpcQr
-  def initialize(registration)
-    @registration = registration
+  def initialize(epc_data)
+    @epc_data = epc_data
   end
 
   def call
-    qrcode = Barby::QrCode.new(epc_from_registration)
+    qrcode = Barby::QrCode.new(@epc_data)
 
     png_outputter = Barby::PngOutputter.new(qrcode)
     png_outputter.xdim = 4
     png_outputter.ydim = 4
 
-    barcode_canvas = png_outputter.to_image
-
-    barcode_canvas.to_blob
-  end
-
-  def epc_from_registration
-    <<~HEREDOC
-      BCD
-      002
-      1
-      SCT
-
-      #{@registration.event.club.name}
-      #{@registration.event.bank_number}
-      EUR#{format '%.2f', @registration.to_pay}
-
-
-      #{@registration.payment_code}
-
-    HEREDOC
+    qrcode_canvas = png_outputter.to_image
+    qrcode_canvas.to_blob
   end
 end

app/controllers/registrations_controller.rb

@@ -26,6 +26,7 @@ def show
 
     @event = @registration.event
     @barcode = GenerateHtmlBarcodes.new(@registration.barcode_data).call
+    @qr_code = GenerateEpcQr.new(@registration.epc_data).call
   end
 
   def new

app/mailers/registration_mailer.rb

@@ -6,7 +6,7 @@ class RegistrationMailer < ApplicationMailer
   def confirm_registration(registration)
     @registration = registration
 
-    attachments.inline['epc.png'] = GenerateEpcQr.new(@registration).call
+    attachments.inline['epc.png'] = GenerateEpcQr.new(@registration.epc_data).call
 
     mail to: "#{registration.name} <#{registration.email}>", subject: "Registration for #{registration.event.name}"
   end

app/models/registration.rb

@@ -72,6 +72,23 @@ def generate_barcode
     self.save!
   end
 
+  def epc_data
+    <<~HEREDOC
+      BCD
+      002
+      1
+      SCT
+
+      #{event.club.name}
+      #{event.bank_number}
+      EUR#{format '%.2f', to_pay}
+
+
+      #{payment_code}
+
+    HEREDOC
+  end
+
   def self.find_payment_code_from_csv(csvline)
     match = /GAN\d+/.match(csvline)
     if match

app/views/registrations/show.html.erb

@@ -49,6 +49,10 @@
         </tr>
       </table>
 
+      <div>
+          <img src="data:image/png;base64,<%= Base64.encode64 @qr_code %>">
+      </div>
+
       <p>
         Om uw ticket te ontvangen via e-mail, schrijft u <strong><%= nice_amount @registration.to_pay %> euro</strong>
         over op het rekeningnummer <strong><%= @registration.event.bank_number || "our bank account" %></strong>. Plaats de code

test/mailers/registration_mailer_test.rb

@@ -16,7 +16,7 @@ class RegistrationMailerTest < ActionMailer::TestCase
 
     email = ActionMailer::Base.deliveries.last
     assert_match(/Registration for/, email.subject)
-    assert_match(/Een signatuur/, email.parts.first.body.to_s)
+    assert_match(/Een signatuur/, email.parts.first.parts.first.body.to_s)
   end
 
   test "signature of ticket emails can be branded" do