Assets: Ošetřen případ, kdy aplikace není mountnuta v rootu

mo/ext/assets.py

 # Flask extension for versioned assets
 
-from flask import send_from_directory
+from flask import request, send_from_directory
 import hashlib
 import os
 from typing import Sequence, Dict
@@ -56,7 +56,7 @@ class Assets:
 
     def asset_url(self, name: str) -> str:
         assert name in self.asset_dict
-        return os.path.join(self.url_prefix, self.asset_dict[name], name)
+        return os.path.join(request.script_root + self.url_prefix, self.asset_dict[name], name)
 
     def send_asset(self, name: str):
         return send_from_directory(self.asset_folder, name)