From 36d884a378c475a45726a25c0c3c59bd5e7b8667 Mon Sep 17 00:00:00 2001
From: Maxime Beauchemin <maximebeauchemin@gmail.com>
Date: Mon, 18 Dec 2017 13:45:51 -0800
Subject: [PATCH] [bugfix] iframe and markup are broken

fixes https://github.com/apache/incubator-superset/issues/4080
---
 superset/viz.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/superset/viz.py b/superset/viz.py
index 9b913e4dbe150..85bc854cf9de8 100644
--- a/superset/viz.py
+++ b/superset/viz.py
@@ -262,7 +262,7 @@ def get_payload(self, force=False):
                 df = self.get_df()
                 if not self.error_message:
                     data = self.get_data(df)
-                rowcount = len(df.index)
+                rowcount = len(df.index) if df is not None else 0
             except Exception as e:
                 logging.exception(e)
                 if not self.error_message:
@@ -523,7 +523,7 @@ class MarkupViz(BaseViz):
     is_timeseries = False
 
     def get_df(self):
-        return True
+        return None
 
     def get_data(self, df):
         markup_type = self.form_data.get('markup_type')