Add images in order form

order/models.py

@@ -238,11 +238,13 @@ class Order(models.Model):
 
 def _upload_image_filename(instance, filename):
     name, ext = os.path.splitext(filename)
-    fn = sha256(str(datetime.now()).encode('utf-8')).hexdigest() + ext
+    fn = sha256((str(datetime.now()) + name).encode('utf-8')).hexdigest() + ext
     return "order-images/" + fn
 
 
 class OrderImage(models.Model):
+    MAX_IMAGES = 10
+
     order = models.ForeignKey(Order, on_delete=models.CASCADE, related_name="order", verbose_name="Заказ")
     image = models.ImageField(upload_to=_upload_image_filename, verbose_name="Картинка",
                               width_field=None, height_field=None)