Add event feedback QR codes

Gemfile

@@ -56,6 +56,8 @@ gem 'search_object'
 
 gem 'faraday'
 
+gem 'rqrcode'
+
 group :development do
   gem 'spring'
   gem 'spring-commands-rspec'

Gemfile.lock

@@ -89,6 +89,7 @@ GEM
       mime-types (>= 1.16)
       mimemagic (>= 0.3.0)
     choice (0.2.0)
+    chunky_png (1.3.8)
     coderay (1.1.1)
     coffee-rails (4.2.1)
       coffee-script (>= 2.2.0)
@@ -284,6 +285,8 @@ GEM
       mime-types (>= 1.16, < 3.0)
       netrc (~> 0.7)
     rmagick (2.16.0)
+    rqrcode (0.10.1)
+      chunky_png (~> 1.0)
     rspec (3.5.0)
       rspec-core (~> 3.5.0)
       rspec-expectations (~> 3.5.0)
@@ -423,6 +426,7 @@ DEPENDENCIES
   refile
   refile-mini_magick
   rmagick
+  rqrcode
   rspec-rails
   sass-rails
   search_object

app/controllers/public/event_feedback_qrcodes_controller.rb

@@ -0,0 +1,13 @@
+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),
+               filename: "feedback_qr_code_#{event.id}.svg")
+      end
+    end
+  end
+end

app/views/api/events/index.jbuilder

@@ -10,5 +10,6 @@
     json.track_id event.track_id
     json.participant_user_ids event.participations.map(&:participant_id)
     json.feedback_url new_event_feedback_url(event_id: event.id)
+    json.feedback_qr_code_url event_feedback_qr_code_url(event_id: event.id, format: :svg)
   end
 end

config/initializers/mime_types.rb

@@ -2,3 +2,5 @@
 
 # Add new mime types for use in respond_to blocks:
 # Mime::Type.register "text/richtext", :rtf
+
+Mime::Type.register "image/svg+xml", :svg

config/routes.rb

@@ -6,6 +6,7 @@ Rails.application.routes.draw do
     resource :personal_profile, path: 'profile'
     resources :events do
       resources :feedbacks, controller: 'event_feedbacks', only: [:new, :create]
+      resource :feedback_qr_code, controller: 'event_feedback_qrcodes', only: :show
       member do
         get :confirm
       end