Only create an assets blueprint if it's not registered.

plotly · Aug 20, 2018 · d3ebe4d · d3ebe4d
1 parent 4d93652
commit d3ebe4d
Showing 1 changed file with 5 additions and 4 deletions.
diff --git a/dash/dash.py b/dash/dash.py
@@ -102,10 +102,11 @@ def __init__(
         # allow users to supply their own flask server
         self.server = server or Flask(name, static_folder=static_folder)
 
-        self.server.register_blueprint(
-            flask.Blueprint('assets', 'assets',
-                            static_folder=self._assets_folder,
-                            static_url_path=assets_url_path))
+        if 'assets' not in self.server.blueprints:
+            self.server.register_blueprint(
+                flask.Blueprint('assets', 'assets',
+                                static_folder=self._assets_folder,
+                                static_url_path=assets_url_path))
 
         env_configs = _configs.env_configs()