Never mess with new-style S3 URLs.

Signed-off-by: Chris Lamb <chris@chris-lamb.co.uk>
lamby · Nov 29, 2017 · d632662 · d632662
1 parent 9e84061
commit d632662
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/django_yadt/fields.py b/django_yadt/fields.py
@@ -209,6 +209,11 @@ def __repr__(self):
     def url(self):
         url = default_storage.url(self._filename())
 
+        # Never mess with new-style S3 "v4" URLs; modifying the querystring
+        # breaks all authentication.
+        if 'X-Amz-Algorithm=' in url:
+            return url
+
         if self.image.field.cachebusting_field:
             suffix = getattr(
                 self.instance,