# HG changeset patch
# User gh@gregor-horvath.com
# Date 1695039658 -7200
#      Mon Sep 18 14:20:58 2023 +0200
# Node ID 3907966457de823b0303fac6bf93ce99fec4fbc9
# Parent  619c88af600b012c3f0f6c9bc51cdf2e7249b8de
upgrade to debian bullseye

diff --git a/ediwo/urls.py b/ediwo/urls.py
--- a/ediwo/urls.py
+++ b/ediwo/urls.py
@@ -40,7 +40,7 @@
     url(r'^music/', include("music.urls")),
     url(r'^$', static_page('music/index.html')),
     url(r'^index$', static_page('music/index.html')),
-    url(r'^accounts/login/$', vary_on_cookie(auth_views.login) ,
+    url(r'^accounts/login/$', vary_on_cookie(auth_views.LoginView.as_view()) ,
         {'extra_context':
              {'view' : {'title': 'Login',
                         'islogin': True,
@@ -48,7 +48,7 @@
                         'register_email': views.Base.register_email,
                         'contact_email': views.Base.register_email
              }}}, name="login"),
-    url(r'^accounts/logout/', vary_on_cookie(auth_views.logout),
+    url(r'^accounts/logout/', vary_on_cookie(auth_views.LogoutView.as_view()),
         {'extra_context':
              {'view' : {'title': 'Logout'}}}, name="logout"),
     url(r'^trial$', views.trial, name="trial"),
diff --git a/music/models.py b/music/models.py
--- a/music/models.py
+++ b/music/models.py
@@ -164,7 +164,8 @@
 
 
 class Base(models.Model):
-    owner = models.ForeignKey(User, verbose_name='Eigentümer', db_index=True,
+    owner = models.ForeignKey(User, on_delete=models.PROTECT,
+                              verbose_name='Eigentümer', db_index=True,
                               **required_args)
 
     def deleteable(self):
@@ -230,7 +231,7 @@
     help_text_plural = 'falsche Noten, technische Schwierigkeiten etc.'
     dependent_object = "Aktivitäten"
 
-    task = models.ForeignKey(Task, blank=False, null=False)
+    task = models.ForeignKey(Task, on_delete=models.PROTECT, blank=False, null=False)
     # TODO refactor/rename to name ? for consistency
     title = models.CharField('Titel', max_length=50, **required_args,
                         help_text=doc_html('Kurzbezeichnung', 'problemtitle'))
@@ -339,7 +340,7 @@
     date = models.DateField('Datum', default=datetime.date.today, null=False)
     type = activity_type
 
-    problem = models.ForeignKey(Problem, blank=False, null=False,
+    problem = models.ForeignKey(Problem, on_delete=models.PROTECT, blank=False, null=False,
                                 verbose_name='Problem')
 
     title = models.CharField('Titel', max_length=50,