fewer explicit serialize() calls

src/c3nav/routing/api/routing.py

@@ -260,7 +260,7 @@ def get_route(request, parameters: RouteParametersSchema):
             'destination': parameters.destination,
             'options': options.serialize_string(),
         }),
-        result=route.serialize(),
+        result=route,
     )
 
 

src/c3nav/routing/route.py

@@ -172,7 +172,7 @@ class Route:
             ('duration_str', duration_str),
             ('summary', summary),
             ('options_summary', self.options_summary),
-            ('items', tuple(item.serialize(locations=self.visible_locations) for item in items)),
+            ('items', items),
         ))
 
     @property