Implement vcard qrcode, fixes #176

app/assets/stylesheets/_employees.scss

@@ -7,6 +7,7 @@
 .master-data-vcard-qrcode {
   display: block;
   width: 100px;
+  padding-bottom: 1em;
 
   @media (min-width: $screen-md-min) {
     padding-top: 20px;

app/controllers/employee_master_data_controller.rb

@@ -39,8 +39,9 @@ def show
 
     respond_to do |format|
       format.html
-      format.vcf
-      format.svg { render plain: qr_code.as_svg }
+      format.vcf { render plain: vcard }
+      format.svg { render plain: qr_code.as_svg(fill: :white) }
+      format.png { render plain: qr_code.as_png(fill: :white) }
     end
   end
 
@@ -102,8 +103,13 @@ def sort_by_latest_employment(list)
     end
   end
 
+  def vcard(include: nil)
+    Employees::Vcard.new(@employee, include: include).render
+  end
+
   def qr_code
-    RQRCode::QRCode.new(employee_master_datum_url(id: params[:id], format: :vcf))
+    vcf = vcard(include: %i[firstname lastname fullname phone_office phone_private email])
+    RQRCode::QRCode.new(vcf)
   end
 
   # Must be included after the #list_entries method is defined.

app/presenters/employees/vcard.rb

@@ -0,0 +1,32 @@
+module Employees
+  class Vcard
+    TEMPLATE_FILE = File.expand_path('vcard.vcf.haml', __dir__)
+
+    attr_reader :employee, :include
+
+    def initialize(employee, include: nil)
+      @employee = employee
+      @include = include
+    end
+
+    def render
+      Haml::Template.new(TEMPLATE_FILE).render(nil, :employee => self)
+    end
+
+    def method_missing(method_name, *args)
+      return employee.send(method_name, *args) if include.blank? || include.include?(method_name)
+      nil
+    end
+
+    def respond_to_missing?(method_name, include_private = false)
+      return employee.respond_to?(method_name, include_private)
+      super
+    end
+
+    private
+
+    def template
+      @template ||= File.read(TEMPLATE_FILE)
+    end
+  end
+end

app/presenters/employees/vcard.vcf.haml

@@ -0,0 +1,19 @@
+-#  Copyright (c) 2006-2023, Puzzle ITC GmbH. This file is part of
+-#  PuzzleTime and licensed under the Affero General Public License version 3
+-#  or later. See the COPYING file at the top-level directory or at
+-#  https://github.com/puzzle/puzzletime.
+
+BEGIN:VCARD
+VERSION:3.0
+N:#{employee.lastname};#{employee.firstname};;;
+FN:#{employee.firstname} #{employee.lastname}
+- if employee.street.present? || employee.city.present? || employee.postal_code.present?
+  ADR;TYPE=HOME,PREF:;;#{employee.street};#{employee.city};;#{employee.postal_code};
+- if employee.phone_office.present?
+  TEL;TYPE=WORK,VOICE:#{employee.phone_office}
+- if employee.phone_private.present?
+  TEL;TYPE=CELL,PREF,VOICE:#{employee.phone_private}
+EMAIL;TYPE=WORK,PREF:#{employee.email}
+- if employee.birthday.present?
+  BDAY:#{employee.birthday.strftime('%Y%m%d')}
+END:VCARD

app/views/employee_master_data/_attrs.html.haml

@@ -32,8 +32,9 @@
               %i.glyphicon.glyphicon-envelope
               = link_to @employee.email, "mailto:#{@employee.email}"
       .col-md-6
+        = link_to({format: :png}, target: :_blank) do
+          = image_tag('qr-code-scan-icon.svg', class: 'qr-code master-data-vcard-qrcode')
         = link_to format: :vcf do
-          %img.master-data-vcard-qrcode{ class: 'qr-code', src: employee_master_datum_url(id: @employee.id, format: :svg) }
           vCard herunterladen
 
     .row