Prevent Caching of Preview Image

This patch prevents the preview image from being cached in Chrome and potentially other browsers by sending a no-cache HTTP header.
opencast · May 29, 2020 · e991972 · e991972
1 parent 8ad15aa
commit e991972
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/pyca/ui/__init__.py b/pyca/ui/__init__.py
@@ -72,7 +72,9 @@ def serve_image(image_id):
         filepath = os.path.abspath(filepath)
         if os.path.isfile(filepath):
             directory, filename = filepath.rsplit('/', 1)
-            return send_from_directory(directory, filename)
+            response = send_from_directory(directory, filename)
+            response.cache_control.no_cache = True
+            return response
     except (IndexError, KeyError):
         pass
     return '', 404