check explicit for None

plone · Mar 26, 2019 · 5507d50 · 5507d50
1 parent 84c735a
commit 5507d50
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/plone/app/z3cform/widget.py b/plone/app/z3cform/widget.py
@@ -412,7 +412,7 @@ def _ajaxselect_options(self):
             if field_name:
                 options['vocabularyUrl'] += '&field={0}'.format(field_name)
             vocabulary = self.get_vocabulary()
-            if vocabulary and self.value:
+            if vocabulary is not None and self.value:
                 options['initialValues'] = dict()
                 for token in self.value.split(self.separator):
                     try: