Add feedback link QR code to confirmation emails

app/controllers/public/event_feedback_qrcodes_controller.rb

@@ -1,11 +1,10 @@
 class Public::EventFeedbackQrcodesController < Public::ApplicationController
   def show
     event = current_conference.events.joins(:proposition).approved.find(params[:event_id])
-    @qr = RQRCode::QRCode.new(new_event_feedback_url(event_id: event.id), level: :l)
 
     respond_to do |format|
       format.svg do
-        render(inline: @qr.as_svg(shape_rendering: "crispEdges", module_size: 11, fill: "ffffff", offset: 10),
+        render(inline: helpers.feedback_qr_code_as_svg(event.id),
                filename: "feedback_qr_code_#{event.id}.svg")
       end
     end

app/helpers/application_helper.rb

@@ -85,4 +85,12 @@ module ApplicationHelper
     when 6       then t('ratings.excellent')
     end
   end
+
+  def feedback_qr_code(event_id)
+    RQRCode::QRCode.new(new_event_feedback_url(event_id: event_id), level: :l)
+  end
+
+  def feedback_qr_code_as_svg(event_id)
+    feedback_qr_code(event_id).as_svg(shape_rendering: "crispEdges", module_size: 11, fill: "ffffff", offset: 10)
+  end
 end

app/mailers/event_mailer.rb

@@ -2,7 +2,10 @@ class EventMailer < ActionMailer::Base
   def confirmation_request(event)
     @event = event
     I18n.locale = @event.proposer.language
-
+    attachments['feedback-link-qr-code.svg'] = {
+      mime_type: 'image/svg+xml',
+      content: helpers.feedback_qr_code_as_svg(@event.id)
+    }
     mail to: @event.proposer.email,
          from: "program@openfest.org",
          subject: I18n.t("event_mailer.acceptance_notification.subject",

app/views/event_mailer/confirmation_request.bg.text.erb

@@ -9,6 +9,9 @@
 Моля, потвърдете участието си възможно най-скоро като кликнете на следния линк:
 <%= confirm_event_url @event, host: @event.conference.host_name, protocol: 'https' %>
 
+Моля, добавете прикаченият към този e-mail QR код в презентацията си. Той
+съдържа връзка към формуляра за обратна връзка за предложеното от Вас събитие.
+
 Моля пишете на ofvideo@openfest.org, ако имате специфични изисквания, например:
 
 * да ви осигурим лаптоп за презентация;

app/views/event_mailer/confirmation_request.en.text.erb

@@ -9,8 +9,10 @@ It has not been scheduled yet.
 Please confirm your participation as soon as you can by following the following link:
 <%= confirm_event_url @event, host: @event.conference.host_name, protocol: 'https' %>
 
+Please make sure you include the QR code attached to this email in your
+presentation. It contains a link to the feedback form for your <%= @event.event_type.name.downcase %>.
 
-Please email ofvideo@openfest.org if you hav any specific requirements, for example:
+Please email ofvideo@openfest.org if you have any specific requirements, for example:
 
 * You need us to provide you with a laptop for your presentation;
 * You need to play sound for your presentation;