X-Git-Url: https://git.sommitrealweird.co.uk/sommitrealweird.git/blobdiff_plain/075239c730821f8acd231cd25987bb1c16031421..eeafdfccb63314d85802f3064b6fb904375bda03:/sommitrealweird/bpcms/models.py

diff --git a/sommitrealweird/bpcms/models.py b/sommitrealweird/bpcms/models.py
index 5df5a43..5c49f49 100644
--- a/sommitrealweird/bpcms/models.py
+++ b/sommitrealweird/bpcms/models.py
@@ -2,7 +2,7 @@ from django.db import models
 from django.conf import settings
 from django.contrib import admin
 from django.core.cache import cache
-from django.core.urlresolvers import reverse
+from django.urls import reverse
 
 FORMAT_CHOICES = (
         ('rst', 'reStructuredText'),
@@ -24,7 +24,7 @@ class Document(models.Model):
     title = models.CharField(max_length=150)
     islive = models.BooleanField(default=False)
     extracss = models.ManyToManyField(CSSDocument, blank=True)
-    folder = models.ForeignKey('Folder', null=True, blank=True)
+    folder = models.ForeignKey('Folder', on_delete=models.SET_NULL, null=True, blank=True)
     format = models.CharField(max_length=10, choices=FORMAT_CHOICES)
     slug = models.SlugField()
     content = models.TextField()
@@ -78,7 +78,7 @@ class Document(models.Model):
 class Folder(models.Model):
     title = models.CharField(max_length=150)
     slug = models.SlugField()
-    parent = models.ForeignKey('self', null=True, blank=True)
+    parent = models.ForeignKey('self', on_delete=models.SET_NULL, null=True, blank=True)
 
     def __str__(self):
         return self.__unicode__()