reverting render_index -> index and making catch for outside of a request context

Author: BSd3v

dash/dash.py

@@ -1145,16 +1145,20 @@ def _generate_meta(self):
 
         return meta_tags + self.config.meta_tags
 
-    def render_index(self, *_args, **_kwargs):
+    def index(self, *_args, **_kwargs):
         scripts = self._generate_scripts_html()
         css = self._generate_css_dist_html()
         config = self._generate_config_html()
         metas = self._generate_meta()
         renderer = self._generate_renderer()
         title = self.title
-        request = get_request_adapter()
+        try:
+            request = get_request_adapter()
+        except LookupError:
+            # no request context
+            request = None
 
-        if self.use_pages and self.config.include_pages_meta:
+        if self.use_pages and self.config.include_pages_meta and request:
             metas = _page_meta_tags(self, request) + metas
 
         if self._favicon:

dash/server_factories/fastapi_factory.py

@@ -88,7 +88,7 @@ async def index(request: Request):
             adapter = FastAPIRequestAdapter()
             set_request_adapter(adapter)
             adapter.set_request(request)
-            return Response(content=dash_app.render_index(), media_type="text/html")
+            return Response(content=dash_app.index(), media_type="text/html")
 
         # pylint: disable=protected-access
         dash_app._add_url("", index, methods=["GET"])
@@ -104,7 +104,7 @@ async def catchall(request: Request):
                 adapter = FastAPIRequestAdapter()
                 set_request_adapter(adapter)
                 adapter.set_request(request)
-                return Response(content=dash_app.render_index(), media_type="text/html")
+                return Response(content=dash_app.index(), media_type="text/html")
 
             # pylint: disable=protected-access
             dash_app._add_url("{path:path}", catchall, methods=["GET"])

dash/server_factories/flask_factory.py

@@ -76,7 +76,7 @@ def setup_catchall(self, dash_app):
         def catchall(*args, **kwargs):
             adapter = FlaskRequestAdapter()
             set_request_adapter(adapter)
-            return dash_app.render_index(*args, **kwargs)
+            return dash_app.index(*args, **kwargs)
 
         # pylint: disable=protected-access
         dash_app._add_url("<path:path>", catchall, methods=["GET"])
@@ -85,7 +85,7 @@ def setup_index(self, dash_app):
         def index(*args, **kwargs):
             adapter = FlaskRequestAdapter()
             set_request_adapter(adapter)
-            return dash_app.render_index(*args, **kwargs)
+            return dash_app.index(*args, **kwargs)
 
         # pylint: disable=protected-access
         dash_app._add_url("", index, methods=["GET"])