Allow path parameter when mounting app (#11757)

* changes

* add changeset

* lint

---------

Co-authored-by: Ali Abid <[email protected]>
Co-authored-by: gradio-pr-bot <[email protected]>
Co-authored-by: Abubakar Abid <[email protected]>

Author: 4 people

.changeset/neat-phones-move.md

@@ -0,0 +1,5 @@
+---
+"gradio": patch
+---
+
+fix:Allow path parameter when mounting app

gradio/routes.py

@@ -310,7 +310,7 @@ def configure_app(self, blocks: gradio.Blocks) -> None:
         self.cwd = os.getcwd()
         self.favicon_path = blocks.favicon_path
         self.tokens = {}
-        self.root_path = blocks.root_path or blocks.custom_mount_path or ""
+        self.root_path = blocks.root_path or ""
         self.state_holder.set_blocks(blocks)
 
     def get_blocks(self) -> gradio.Blocks:
@@ -655,7 +655,7 @@ def main(
             root = route_utils.get_root_url(
                 request=request,
                 route_path=f"/{page}",
-                root_path=app.root_path,
+                root_path=app.root_path or blocks.custom_mount_path,
             )
             if (app.auth is None and app.auth_dependency is None) or user is not None:
                 config = utils.safe_deepcopy(blocks.config)
@@ -870,7 +870,9 @@ def openapi_schema(request: fastapi.Request):
         def get_config(request: fastapi.Request, deep_link: str = ""):
             config = utils.safe_deepcopy(app.get_blocks().config)
             root = route_utils.get_root_url(
-                request=request, route_path="/config", root_path=app.root_path
+                request=request,
+                route_path="/config",
+                root_path=app.root_path or blocks.custom_mount_path,
             )
             config["username"] = get_current_user(request)
             if deep_link:
@@ -2354,6 +2356,7 @@ async def new_lifespan(app: FastAPI):
 
     app.router.lifespan_context = new_lifespan  # type: ignore
 
+    print("new", path)
     app.mount(path, gradio_app)
     return app
 

test/test_routes.py

@@ -451,6 +451,22 @@ def test_mount_gradio_app_with_auth_and_params(self):
         assert demo.allowed_paths == ["test/test_files/bus.png"]
         assert demo.show_error
 
+    def test_mount_gradio_app_with_path_params(self):
+        app = FastAPI()
+
+        def print_id(_, request: gr.Request):
+            return request.path_params["id"]
+
+        demo = gr.Interface(print_id, "textbox", "textbox")
+        app = gr.mount_gradio_app(
+            app,
+            demo,
+            path="/project/{id}",
+        )
+        with TestClient(app) as client:
+            response = client.get("/project/123")
+            assert response.status_code == 200
+
     def test_mount_gradio_app_with_lifespan(self):
         @asynccontextmanager
         async def empty_lifespan(app: FastAPI):