From bab9d25d8fc27ef025dea04bfe113524a76b28f7 Mon Sep 17 00:00:00 2001
From: Jon Mease <jon.mease@gmail.com>
Date: Tue, 5 May 2020 17:26:18 -0400
Subject: [PATCH] Don't disable validation when constructing FigureWidget's
 template.

We need to run through all of this logic to generate the messages to send to the front-end.
---
 packages/python/plotly/plotly/basedatatypes.py | 4 +++-
 packages/python/plotly/plotly/basewidget.py    | 1 +
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/packages/python/plotly/plotly/basedatatypes.py b/packages/python/plotly/plotly/basedatatypes.py
index ee9ce457451..87da535702a 100644
--- a/packages/python/plotly/plotly/basedatatypes.py
+++ b/packages/python/plotly/plotly/basedatatypes.py
@@ -37,6 +37,7 @@ class BaseFigure(object):
     }
 
     _set_trace_uid = False
+    _allow_disable_validation = True
 
     # Constructor
     # -----------
@@ -1947,7 +1948,8 @@ def _initialize_layout_template(self):
         if self._layout_obj._props.get("template", None) is None:
             if pio.templates.default is not None:
                 # Assume default template is already validated
-                self._layout_obj._validate = False
+                if self._allow_disable_validation:
+                    self._layout_obj._validate = False
                 try:
                     template_dict = pio.templates[pio.templates.default]
                     self._layout_obj.template = template_dict
diff --git a/packages/python/plotly/plotly/basewidget.py b/packages/python/plotly/plotly/basewidget.py
index 02e7ed2f9f5..e0a94956d77 100644
--- a/packages/python/plotly/plotly/basewidget.py
+++ b/packages/python/plotly/plotly/basewidget.py
@@ -101,6 +101,7 @@ class BaseFigureWidget(BaseFigure, widgets.DOMWidget):
     _last_trace_edit_id = Integer(0).tag(sync=True)
 
     _set_trace_uid = True
+    _allow_disable_validation = False
 
     # Constructor
     # -----------