Fix sanic-org#1943

sanic/blueprints.py

@@ -108,9 +108,6 @@ def register(self, app, options):
 
         # Routes
         for future in self.routes:
-            # attach the blueprint name to the handler so that it can be
-            # prefixed properly in the router
-            future.handler.__blueprintname__ = self.name
             # Prepend the blueprint URI prefix if available
             uri = url_prefix + future.uri if url_prefix else future.uri
 
@@ -123,22 +120,19 @@ def register(self, app, options):
                 strict_slashes=future.strict_slashes,
                 stream=future.stream,
                 version=version,
-                name=future.name,
+                name=future.name or f"{self.name}.{future.handler.__name__}",
             )(future.handler)
             if _routes:
                 routes += _routes
 
         for future in self.websocket_routes:
-            # attach the blueprint name to the handler so that it can be
-            # prefixed properly in the router
-            future.handler.__blueprintname__ = self.name
             # Prepend the blueprint URI prefix if available
             uri = url_prefix + future.uri if url_prefix else future.uri
             _routes, _ = app.websocket(
                 uri=uri,
                 host=future.host or self.host,
                 strict_slashes=future.strict_slashes,
-                name=future.name,
+                name=future.name or f"{self.name}.{future.handler.__name__}",
             )(future.handler)
             if _routes:
                 routes += _routes

sanic/router.py

@@ -294,12 +294,15 @@ def merge_route(route, methods, handler):
             is_static = True
             name = name.split("_static_", 1)[-1]
 
-        if hasattr(handler, "__blueprintname__"):
-            bp_name = handler.__blueprintname__
+        if not name:
+            if hasattr(handler, "__blueprintname__"):
+                bp_name = handler.__blueprintname__
 
-            handler_name = f"{bp_name}.{name or handler.__name__}"
+                handler_name = f"{bp_name}.{name or handler.__name__}"
+            else:
+                handler_name = getattr(handler, "__name__", None)
         else:
-            handler_name = name or getattr(handler, "__name__", None)
+            handler_name = name
 
         if route:
             route = merge_route(route, methods, handler)