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/plugins/banktransfer/api.py

@@ -47,7 +47,7 @@ class BankImportJobSerializer(serializers.ModelSerializer):
 
 
 class JobFilter(FilterSet):
-    event = django_filters.CharFilter(name='event', lookup_expr='slug')
+    event = django_filters.CharFilter(field_name='event', lookup_expr='slug')
 
     class Meta:
         model = BankImportJob
@@ -58,7 +58,7 @@ class BankImportJobViewSet(CreateModelMixin, viewsets.ReadOnlyModelViewSet):
     serializer_class = BankImportJobSerializer
     queryset = BankImportJob.objects.none()
     filter_backends = (DjangoFilterBackend,)
-    filter_class = JobFilter
+    filterset_class = JobFilter
     permission = 'can_view_orders'
 
     def get_queryset(self):

src/pretix/plugins/banktransfer/models.py

@@ -16,8 +16,8 @@ class BankImportJob(models.Model):
         (STATE_COMPLETED, 'completed'),
     )
 
-    event = models.ForeignKey('pretixbase.Event', null=True)
-    organizer = models.ForeignKey('pretixbase.Organizer', null=True)
+    event = models.ForeignKey('pretixbase.Event', null=True, on_delete=models.CASCADE)
+    organizer = models.ForeignKey('pretixbase.Organizer', null=True, on_delete=models.CASCADE)
     created = models.DateTimeField(auto_now_add=True)
     state = models.CharField(max_length=32, choices=STATES, default=STATE_PENDING)
 
@@ -48,9 +48,9 @@ class BankTransaction(models.Model):
         (STATE_DISCARDED, 'manually discarded'),
     )
 
-    event = models.ForeignKey('pretixbase.Event', null=True)
-    organizer = models.ForeignKey('pretixbase.Organizer', null=True)
-    import_job = models.ForeignKey('BankImportJob', related_name='transactions')
+    event = models.ForeignKey('pretixbase.Event', null=True, on_delete=models.CASCADE)
+    organizer = models.ForeignKey('pretixbase.Organizer', null=True, on_delete=models.CASCADE)
+    import_job = models.ForeignKey('BankImportJob', related_name='transactions', on_delete=models.CASCADE)
     state = models.CharField(max_length=32, choices=STATES, default=STATE_UNCHECKED)
     message = models.TextField()
     checksum = models.CharField(max_length=190, db_index=True)
@@ -58,7 +58,7 @@ class BankTransaction(models.Model):
     reference = models.TextField(blank=True)
     amount = models.DecimalField(max_digits=10, decimal_places=2)
     date = models.CharField(max_length=50)
-    order = models.ForeignKey('pretixbase.Order', null=True, blank=True)
+    order = models.ForeignKey('pretixbase.Order', null=True, blank=True, on_delete=models.CASCADE)
     comment = models.TextField(blank=True)
 
     def calculate_checksum(self):

src/pretix/plugins/banktransfer/signals.py

@@ -1,6 +1,6 @@
-from django.core.urlresolvers import resolve, reverse
 from django.dispatch import receiver
 from django.template.loader import get_template
+from django.urls import resolve, reverse
 from django.utils.translation import ugettext_lazy as _
 
 from pretix.base.signals import register_payment_providers

src/pretix/plugins/banktransfer/templates/pretixplugins/banktransfer/control_head.html

@@ -1,4 +1,4 @@
-{% load staticfiles %}
+{% load static %}
 {% load compress %}
 
 {% compress css %}

src/pretix/plugins/banktransfer/templates/pretixplugins/banktransfer/job_detail.html

@@ -1,6 +1,6 @@
 {% extends basetpl %}
 {% load i18n %}
-{% load staticfiles %}
+{% load static %}
 {% block inner %}
     <h2>{% trans "Import result" %}</h2>
     {% if job.state == "running" or job.state == "pending" %}

src/pretix/plugins/banktransfer/templates/pretixplugins/banktransfer/transaction_list.html

@@ -1,7 +1,7 @@
 {% load i18n %}
 {% load rich_text %}
 {% load money %}
-{% load staticfiles %}
+{% load static %}
 <div class="table-responsive">
     {% csrf_token %}
     <table class="table table-condensed transaction-list" data-url="{% if request.event %}{% url "plugins:banktransfer:import.action" event=request.event.slug organizer=request.organizer.slug %}{% else %}{% url "plugins:banktransfer:import.action" organizer=request.organizer.slug %}{% endif %}">

src/pretix/plugins/banktransfer/views.py

@@ -4,11 +4,11 @@ import logging
 from datetime import timedelta
 
 from django.contrib import messages
-from django.core.urlresolvers import reverse
 from django.db.models import Count, Q
 from django.db.models.functions import Concat
 from django.http import JsonResponse
 from django.shortcuts import get_object_or_404, redirect, render
+from django.urls import reverse
 from django.utils.functional import cached_property
 from django.utils.timezone import now
 from django.utils.translation import ugettext as _