Prevent some pages from search indexing

src/pretix/presale/templates/pretixpresale/event/base.html

@@ -40,7 +40,7 @@
             {% if request.event.settings.locales|length > 1 %}
                 <div class="locales">
                     {% for l in languages %}
-                        <a href="{% url "presale:locale.set" %}?locale={{ l.code }}&next={{ request.path }}%3F{{ request.META.QUERY_STRING|urlencode }}" class="{% if l.code == request.LANGUAGE_CODE %}active{% endif %}">
+                        <a href="{% url "presale:locale.set" %}?locale={{ l.code }}&next={{ request.path }}%3F{{ request.META.QUERY_STRING|urlencode }}" class="{% if l.code == request.LANGUAGE_CODE %}active{% endif %}" rel="nofollow">
                             {{ l.name_local }}
                         </a>
                     {% endfor %}

src/pretix/presale/urls.py

@@ -6,6 +6,7 @@ import pretix.presale.views.event
 import pretix.presale.views.locale
 import pretix.presale.views.order
 import pretix.presale.views.organizer
+import pretix.presale.views.robots
 import pretix.presale.views.user
 import pretix.presale.views.waiting
 
@@ -83,4 +84,5 @@ organizer_patterns = [
 
 locale_patterns = [
     url(r'^locale/set$', pretix.presale.views.locale.LocaleSet.as_view(), name='locale.set'),
+    url(r'^robots.txt$', pretix.presale.views.robots.robots_txt, name='robots.txt'),
 ]

src/pretix/presale/views/cart.py

@@ -22,6 +22,7 @@ from pretix.multidomain.urlreverse import eventreverse
 from pretix.presale.views import EventViewMixin
 from pretix.presale.views.async import AsyncAction
 from pretix.presale.views.event import item_group_by_category
+from pretix.presale.views.robots import NoSearchIndexViewMixin
 
 
 class CartActionMixin:
@@ -177,7 +178,7 @@ class CartAdd(EventViewMixin, CartActionMixin, AsyncAction, View):
                 return redirect(self.get_error_url())
 
 
-class RedeemView(EventViewMixin, TemplateView):
+class RedeemView(NoSearchIndexViewMixin, EventViewMixin, TemplateView):
     template_name = "pretixpresale/event/voucher.html"
 
     def get_context_data(self, **kwargs):

src/pretix/presale/views/locale.py

@@ -5,8 +5,10 @@ from django.http import HttpResponseRedirect
 from django.utils.http import is_safe_url
 from django.views.generic import View
 
+from .robots import NoSearchIndexViewMixin
 
-class LocaleSet(View):
+
+class LocaleSet(NoSearchIndexViewMixin, View):
 
     def get(self, request, *args, **kwargs):
         url = request.GET.get('next', request.META.get('HTTP_REFERER', '/'))

src/pretix/presale/views/order.py

@@ -29,9 +29,10 @@ from pretix.presale.forms.checkout import InvoiceAddressForm
 from pretix.presale.views import CartMixin, EventViewMixin
 from pretix.presale.views.async import AsyncAction
 from pretix.presale.views.questions import QuestionsViewMixin
+from pretix.presale.views.robots import NoSearchIndexViewMixin
 
 
-class OrderDetailMixin:
+class OrderDetailMixin(NoSearchIndexViewMixin):
     @cached_property
     def order(self):
         order = self.request.event.orders.filter(code=self.kwargs['order']).select_related('event').first()

src/pretix/presale/views/robots.py

@@ -0,0 +1,26 @@
+from django.http import HttpResponse
+from django.views.decorators.cache import cache_page
+
+
+class NoSearchIndexViewMixin:
+    def dispatch(self, request, *args, **kwargs):
+        resp = super().dispatch(request, *args, **kwargs)
+        resp['X-Robots-Tag'] = "noindex"
+        return resp
+
+
+@cache_page(3600)
+def robots_txt(request):
+    return HttpResponse(
+        """User-agent: *
+Disallow: */cart/*
+Disallow: */checkout/*
+Disallow: */order/*
+Disallow: */locale/set*
+Disallow: /control/
+Disallow: /download/
+Disallow: /redirect/
+Disallow: /api/
+Disallow: /download/
+""", content_type='text/plain'
+    )