X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/154870f0416b6b387637d6035c96321410512e95..eaf0711613bea8181528d8911b30ef7976b7bb42:/src/lesmianator/models.py

diff --git a/src/lesmianator/models.py b/src/lesmianator/models.py
index 0a4c0591b..f12f1d778 100644
--- a/src/lesmianator/models.py
+++ b/src/lesmianator/models.py
@@ -1,7 +1,7 @@
-# -*- coding: utf-8 -*-
 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
 #
+from functools import reduce
 import pickle
 from pickle import PickleError
 from datetime import datetime
@@ -11,11 +11,11 @@ from django.core.files.base import ContentFile
 from django.db import models
 from django.utils.timezone import utc
 from django.utils.translation import ugettext_lazy as _
-from django.core.urlresolvers import reverse
 from django.contrib.auth.models import User
 from django.contrib.contenttypes.models import ContentType
 from django.contrib.contenttypes.fields import GenericForeignKey
 from django.conf import settings
+from django.urls import reverse
 
 from jsonfield import JSONField
 from catalogue.models import Book, Tag
@@ -24,7 +24,7 @@ from catalogue.models import Book, Tag
 class Poem(models.Model):
     slug = models.SlugField(_('slug'), max_length=120, db_index=True)
     text = models.TextField(_('text'))
-    created_by = models.ForeignKey(User, null=True)
+    created_by = models.ForeignKey(User, models.SET_NULL, null=True)
     created_from = JSONField(_('extra information'), null=True, blank=True)
     created_at = models.DateTimeField(_('creation date'), auto_now_add=True, editable=False)
     seen_at = models.DateTimeField(_('last view date'), auto_now_add=True, editable=False)
@@ -101,7 +101,7 @@ class Poem(models.Model):
 
 class Continuations(models.Model):
     pickle = models.FileField(_('Continuations file'), upload_to='lesmianator')
-    content_type = models.ForeignKey(ContentType)
+    content_type = models.ForeignKey(ContentType, models.CASCADE)
     object_id = models.PositiveIntegerField()
     content_object = GenericForeignKey('content_type', 'object_id')
 
@@ -155,7 +155,7 @@ class Continuations(models.Model):
             obj = cls.objects.get(content_type=object_type, object_id=sth.id)
             if not obj.pickle:
                 raise cls.DoesNotExist
-            f = open(obj.pickle.path)
+            f = open(obj.pickle.path, 'rb')
             keys, conts = pickle.load(f)
             f.close()
             if set(keys) != should_keys: