upgrade packages

committee/models.py

@@ -5,7 +5,7 @@ from django.db import models
 
 class Committee(models.Model):
     name = models.CharField(max_length=100, unique=True)
-    chair = models.ForeignKey(User, null=True)
+    chair = models.ForeignKey(User, null=True, on_delete=models.CASCADE)
 
     def __str__(self):
         return self.name

committee/urls.py

@@ -1,11 +1,11 @@
-from django.conf.urls import url
+from django.urls import path
 
 from committee import views
 
 urlpatterns = [
-    url(r'^$', views.edit, name='edit'),
-    url(r'^update/(?P<committee>\d+)/$', views.update, name='update'),
-    url(r'^fincom/$', views.add_to_fincom, name='add_to_fincom'),
-    url(r'^fincom/delete$', views.remove_fincom, name='remove_fincom'),
-    url(r'^new$', views.new_committee, name='new_committee'),
+    path('', views.edit, name='edit'),
+    path('update/<int:committee>/', views.update, name='update'),
+    path('fincom/', views.add_to_fincom, name='add_to_fincom'),
+    path('fincom/delete', views.remove_fincom, name='remove_fincom'),
+    path('new', views.new_committee, name='new_committee'),
 ]