Изменил(а) на 'extend/models.py'

extend/models.py

@@ -1,7 +1,8 @@
-from datetime import datetime
 from django.db import models
 from django.contrib.auth.models import User
 from django.utils.safestring import mark_safe
+from django.utils import timezone
+from django.core.validators import FileExtensionValidator
 from mptt.models import MPTTModel, TreeForeignKey
 from pytils.translit import slugify
 from model_utils import Choices
@@ -77,9 +78,15 @@ class Photo(models.Model):
     user = models.ForeignKey(User, null=True, on_delete=models.SET_NULL, verbose_name="Пользователь")
     title = models.CharField("Название", blank=True, max_length=255)
     image = ThumbnailerImageField(
-        "Фото", upload_to="photos/", max_length=255, default="", resize_source=dict(size=(825, 825), sharpen=True)
+        "Фото",
+        upload_to="photos/",
+        max_length=255,
+        default="",
+        resize_source=dict(size=(825, 825), sharpen=True),
+        validators=[FileExtensionValidator(
+            allowed_extensions=["png", "jpg", "jpeg", "gif"])]        
     )
-    created = models.DateTimeField("Создано", default=datetime.now)
+    created = models.DateTimeField("Создано", default=timezone.now)
     updated = models.DateTimeField("Изменено", auto_now=True)
 
     class Meta: