#8 - Fix Select2TagsField

flask_admin/form/fields.py

@@ -130,4 +130,4 @@ class Select2TagsField(fields.TextField):
             self.data = valuelist[0]
 
     def _value(self):
-        return u', '.join(self.data) if isinstance(self.data, list) else self.data
+        return u', '.join(self.data or [])

flask_admin/static/admin/js/form.js

@@ -95,7 +95,8 @@
                 if ($el.attr('data-tags')) {
                     $.extend(opts, {
                         multiple: true,
-                        tokenSeparators: [',']
+                        tokenSeparators: [','],
+                        tags: []
                     });
                 }