1 files changed, 6 insertions, 6 deletions
diff --git a/app/books/models.py b/app/books/models.py
index c3c15f4..59f0ae3 100644
--- a/app/books/models.py
+++ b/app/books/models.py
@@ -1,6 +1,8 @@
+import datetime
 from django.db import models
 from django.urls import reverse
-from django.utils.encoding import force_text
+from django.apps import apps
+from django.utils.html import format_html
 from django.conf import settings
 from django.template.defaultfilters import slugify
 
@@ -25,7 +27,6 @@ class Book(models.Model):
     publish_date = models.CharField(max_length=40, blank=True, null=True)
     publish_place = models.CharField(max_length=100, blank=True, null=True)
     openlib_url = models.CharField(max_length=400, blank=True, null=True)
-    amazon_url = models.CharField(max_length=400, blank=True, null=True)
     RATINGS = (
         ('1', "1 Star"),
         ('2', "2 Stars"),
@@ -60,19 +61,18 @@ class Book(models.Model):
     @property
     def get_previous_admin_url(self):
         n = self.get_previous_by_pub_date()
-        return reverse('admin:%s_%s_change' %(self._meta.app_label,  self._meta.model_name),  args=[n.id] )
+        return reverse('admin:%s_%s_change' % (self._meta.app_label,  self._meta.model_name),  args=[n.id])
 
     @property
     def get_next_admin_url(self):
         model = apps.get_model(app_label=self._meta.app_label, model_name=self._meta.model_name)
         try:
-            return reverse('admin:%s_%s_change' %(self._meta.app_label,  self._meta.model_name),  args=[self.get_next_by_pub_date().pk] )
+            return reverse('admin:%s_%s_change' % (self._meta.app_label,  self._meta.model_name),  args=[self.get_next_by_pub_date().pk])
         except model.DoesNotExist:
             return ''
 
     def admin_thumbnail(self):
-        return force_text('<a href=""><img src="%s" width="100" style="width:100px"></a>' % (self.get_image_url()))
-    admin_thumbnail.allow_tags = True
+        return format_html('<img src="%s" width="100" style="width:100px" />' % (self.get_image_url()))
     admin_thumbnail.short_description = 'Thumbnail'
 
     def save(self, *args, **kwargs):