Add order images model and test this model

order/models.py

@@ -1,3 +1,5 @@
+from hashlib import sha256
+
 from django.core.exceptions import *
 from django.core.validators import RegexValidator
 from django.db import models
@@ -5,6 +7,7 @@ from django.db.models import Q
 
 from account.models import SiteUser
 from datetime import datetime
+import os
 
 
 class City(models.Model):
@@ -232,3 +235,19 @@ class Order(models.Model):
         else:
             return q[0]
 
+
+def _upload_image_filename(instance, filename):
+    name, ext = os.path.splitext(filename)
+    fn = sha256(str(datetime.now()).encode('utf-8')).hexdigest() + ext
+    return "order-images/" + fn
+
+
+class OrderImage(models.Model):
+    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)
+
+    def __str__(self):
+        return f"{self.id}: {self.order}"
+
+