Show url of public organizer page on organizer overview

src/pretix/control/templates/pretixcontrol/organizers/detail.html

@@ -1,11 +1,27 @@
 {% extends "pretixcontrol/organizers/base.html" %}
 {% load i18n %}
+{% load eventurl %}
 {% load bootstrap3 %}
 {% load static %}
 {% block inner %}
     <h1>
         {% blocktrans with name=request.organizer.name %}Organizer: {{ name }}{% endblocktrans %}
     </h1>
+    <div class="helper-space-below">
+        {% trans "Public profile" %}:
+        <span id="organizer_url" class="text-muted">{% abseventurl request.organizer "presale:organizer.index" %}</span>
+        <button type="button" class="btn btn-default btn-xs btn-clipboard js-only" data-clipboard-target="#organizer_url">
+            <i class="fa fa-clipboard" aria-hidden="true"></i>
+            <span class="sr-only">{% trans "Copy to clipboard" %}</span>
+        </button>
+        <div class="btn-group helper-display-inline-block">
+            <button type="button" class="btn btn-default btn-xs dropdown-toggle" data-toggle="dropdown" title="{% trans "Create QR code" %}" aria-haspopup="true" aria-expanded="false">
+                <i class="fa fa-qrcode" aria-hidden="true"></i>
+            </button>
+            {% include "pretixcontrol/organizers/fragment_qr_dropdown.html" with url=0 %}
+        </div>
+        <div class="clearfix"></div>
+    </div>
     {% if events|length == 0 and not filter_form.filtered %}
         {% if "organizer.events:create" in request.orgapermset %}
             <p>

src/pretix/control/templates/pretixcontrol/organizers/fragment_qr_dropdown.html

@@ -0,0 +1,27 @@
+{% load i18n %}
+<ul class="dropdown-menu dropdown-menu-right">
+    <li>
+        <a href="{% url "control:organizer.qrcode" organizer=request.organizer.slug filetype="png" %}{% if url %}?url={{ url|urlencode }}{% endif %}"
+           target="_blank" download>
+            {% blocktrans with filetype="PNG" %}Download QR code as {{ filetype }} image{% endblocktrans %}
+        </a>
+    </li>
+    <li>
+        <a href="{% url "control:organizer.qrcode" organizer=request.organizer.slug filetype="svg" %}{% if url %}?url={{ url|urlencode }}{% endif %}"
+           target="_blank" download>
+            {% blocktrans with filetype="SVG" %}Download QR code as {{ filetype }} image{% endblocktrans %}
+        </a>
+    </li>
+    <li>
+        <a href="{% url "control:organizer.qrcode" organizer=request.organizer.slug filetype="jpeg" %}{% if url %}?url={{ url|urlencode }}{% endif %}"
+           target="_blank" download>
+            {% blocktrans with filetype="JPG" %}Download QR code as {{ filetype }} image{% endblocktrans %}
+        </a>
+    </li>
+    <li>
+        <a href="{% url "control:organizer.qrcode" organizer=request.organizer.slug filetype="gif" %}{% if url %}?url={{ url|urlencode }}{% endif %}"
+           target="_blank" download>
+            {% blocktrans with filetype="GIF" %}Download QR code as {{ filetype }} image{% endblocktrans %}
+        </a>
+    </li>
+</ul>

src/pretix/control/urls.py

@@ -263,6 +263,7 @@ urlpatterns = [
             name='organizer.export.scheduled.delete'),
     re_path(r'^organizer/(?P<organizer>[^/]+)/ticket_select2$', typeahead.ticket_select2, name='organizer.ticket_select2'),
     re_path(r'^organizer/(?P<organizer>[^/]+)/datasync/failedjobs/$', datasync.OrganizerFailedSyncJobsView.as_view(), name='organizer.datasync.failedjobs'),
+    re_path(r'^organizer/(?P<organizer>[^/]+)/qrcode.(?P<filetype>(png|jpeg|gif|svg))$', organizer.OrganizerQRCode.as_view(), name='organizer.qrcode'),
     re_path(r'^nav/typeahead/$', typeahead.nav_context_list, name='nav.typeahead'),
     re_path(r'^events/$', main.EventList.as_view(), name='events'),
     re_path(r'^events/add$', main.EventWizard.as_view(), name='events.add'),

src/pretix/control/views/organizer.py

@@ -40,11 +40,14 @@ from collections import Counter
 from datetime import time, timedelta
 from decimal import Decimal
 from hashlib import sha1
+from io import BytesIO
 from itertools import groupby
 from json import JSONDecodeError
 
 import bleach
 import dateutil
+import qrcode
+import qrcode.image.svg
 from django import forms
 from django.conf import settings
 from django.contrib import messages
@@ -3758,3 +3761,41 @@ def reorder_channels(request, organizer):
             )
 
     return HttpResponse()
+
+
+class OrganizerQRCode(OrganizerPermissionRequiredMixin, View):
+    permission = None
+
+    def get(self, request, *args, filetype, **kwargs):
+        url = eventreverse_absolute(request.organizer, 'presale:organizer.index')
+
+        if "url" in request.GET:
+            if request.GET["url"].startswith(url):
+                url = request.GET["url"]
+            else:
+                raise PermissionDenied("Untrusted URL")
+
+        qr = qrcode.QRCode(
+            version=1,
+            error_correction=qrcode.constants.ERROR_CORRECT_M,
+            box_size=10,
+            border=4,
+        )
+        qr.add_data(url)
+        qr.make(fit=True)
+
+        if filetype == 'svg':
+            factory = qrcode.image.svg.SvgPathImage
+            img = qr.make_image(image_factory=factory)
+            r = HttpResponse(img.to_string(), content_type='image/svg+xml')
+            r['Content-Disposition'] = f'inline; filename="qrcode-{request.organizer.slug}.{filetype}"'
+            return r
+        elif filetype in ('jpeg', 'png', 'gif'):
+            img = qr.make_image(fill_color="black", back_color="white")
+
+            byte_io = BytesIO()
+            img.save(byte_io, filetype.upper())
+            byte_io.seek(0)
+            r = HttpResponse(byte_io.read(), content_type='image/' + filetype)
+            r['Content-Disposition'] = f'inline; filename="qrcode-{request.organizer.slug}.{filetype}"'
+            return r