Improve check for missing namespaces

diff --git a/drafthorse/models/document.py b/drafthorse/models/document.py
index bbdcc11140e8b62f24d1399731c7203d4a6b2a80..b654f92a2d258257e55fba030abf144a87c56f2d 100644 (file)
--- a/drafthorse/models/document.py
+++ b/drafthorse/models/document.py
@@ -121,7 +121,7 @@ class Document(Element):
         # Second pass to ensure all namespaces are defined even if they are unused
         root = ET.fromstring(xml)
         for ns, url in self.__namespaces.items():
-            if ns.encode() not in xml:
+            if f"xmlns:{ns}".encode() not in xml:
                 root.set(f"xmlns:{ns}", url)
         return ET.tostring(root, "utf-8")