wcs/forms/common.py

@@ -25,6 +25,7 @@ from quixote import get_publisher, get_request, get_response, get_session, redir
 from quixote.directory import Directory
 from quixote.errors import RequestError
 from quixote.html import TemplateIO, htmltext
+from quixote.http_request import Upload
 from quixote.util import randbytes
 
 from wcs import data_sources
@@ -370,7 +371,7 @@ class FormStatusPage(Directory, FormTemplateMixin):
                 # draft from SQL (where all columns are always defined).
                 del form_data[field.id]
                 continue
-            if field.key == 'file':
+            if field.key == 'file' and isinstance(form_data[field.id], Upload):
                 # add back file to session
                 tempfile = session.add_tempfile(form_data[field.id], storage=field.storage)
                 form_data[field.id].token = tempfile['token']