Upgrade to Django 2.1 (#710)

* Upgrade to Django 2.0

* more models

* i18n foo

* Update setup.py

* Fix Sentry exception PRETIXEU-JC

* Enforce slug uniqueness

* Import sorting

* Upgrade to Django 2.1

* Travis config

* Try to fix PostgreSQL failure

* Smaller test matrix

* staticfiles→static

* Include request in all authenticate() calls

src/pretix/presale/views/cart.py

@@ -36,7 +36,7 @@ from pretix.presale.views.robots import NoSearchIndexViewMixin
 class CartActionMixin:
 
     def get_next_url(self):
-        if "next" in self.request.GET and is_safe_url(self.request.GET.get("next")):
+        if "next" in self.request.GET and is_safe_url(self.request.GET.get("next"), allowed_hosts=None):
             u = self.request.GET.get('next')
         else:
             kwargs = {}

src/pretix/presale/views/locale.py

@@ -12,7 +12,7 @@ class LocaleSet(NoSearchIndexViewMixin, View):
 
     def get(self, request, *args, **kwargs):
         url = request.GET.get('next', request.META.get('HTTP_REFERER', '/'))
-        url = url if is_safe_url(url, host=request.get_host()) else '/'
+        url = url if is_safe_url(url, allowed_hosts=[request.get_host()]) else '/'
         resp = HttpResponseRedirect(url)
 
         locale = request.GET.get('locale')

src/pretix/presale/views/widget.py

@@ -14,11 +14,12 @@ from django.template.loader import get_template
 from django.utils.formats import date_format
 from django.utils.timezone import now
 from django.utils.translation import gettext
+from django.utils.translation.trans_real import DjangoTranslation
 from django.views import View
 from django.views.decorators.cache import cache_page
 from django.views.decorators.http import condition
 from django.views.i18n import (
-    get_formats, get_javascript_catalog, js_catalog_template,
+    JavaScriptCatalog, get_formats, js_catalog_template,
 )
 from lxml import etree
 
@@ -73,7 +74,10 @@ def generate_widget_js(lang):
         code.append('var module = {}, exports = {};\n')
         code.append('var lang = "%s";\n' % lang)
 
-        catalog, plural = get_javascript_catalog(lang, 'djangojs', ['pretix'])
+        c = JavaScriptCatalog()
+        c.translation = DjangoTranslation(lang, domain='djangojs')
+        catalog, plural = c.get_catalog(), c.get_plural()
+
         catalog = dict((k, v) for k, v in catalog.items() if k.startswith('widget\u0004'))
         template = Engine().from_string(js_catalog_template)
         context = Context({