Fixed #34394 -- Added FORCE_SCRIPT_NAME handling to ASGIRequest.

Co-authored-by: Mariusz Felisiak <felisiak.mariusz@gmail.com>

django/core/handlers/asgi.py

@@ -26,6 +26,15 @@ from django.utils.functional import cached_property
 logger = logging.getLogger("django.request")
 
 
+def get_script_prefix(scope):
+    """
+    Return the script prefix to use from either the scope or a setting.
+    """
+    if settings.FORCE_SCRIPT_NAME:
+        return settings.FORCE_SCRIPT_NAME
+    return scope.get("root_path", "") or ""
+
+
 class ASGIRequest(HttpRequest):
     """
     Custom request subclass that decodes from an ASGI-standard request dict
@@ -41,7 +50,7 @@ class ASGIRequest(HttpRequest):
         self._post_parse_error = False
         self._read_started = False
         self.resolver_match = None
-        self.script_name = self.scope.get("root_path", "")
+        self.script_name = get_script_prefix(scope)
         if self.script_name:
             # TODO: Better is-prefix checking, slash handling?
             self.path_info = scope["path"].removeprefix(self.script_name)
@@ -170,7 +179,7 @@ class ASGIHandler(base.BaseHandler):
         except RequestAborted:
             return
         # Request is complete and can be served.
-        set_script_prefix(self.get_script_prefix(scope))
+        set_script_prefix(get_script_prefix(scope))
         await signals.request_started.asend(sender=self.__class__, scope=scope)
         # Get the request and check for basic issues.
         request, error_response = self.create_request(scope, body_file)
@@ -344,11 +353,3 @@ class ASGIHandler(base.BaseHandler):
                 (position + cls.chunk_size) >= len(data),
             )
             position += cls.chunk_size
-
-    def get_script_prefix(self, scope):
-        """
-        Return the script prefix to use from either the scope or a setting.
-        """
-        if settings.FORCE_SCRIPT_NAME:
-            return settings.FORCE_SCRIPT_NAME
-        return scope.get("root_path", "") or ""

tests/handlers/tests.py

@@ -3,6 +3,7 @@ from django.core.handlers.wsgi import WSGIHandler, WSGIRequest, get_script_name
 from django.core.signals import request_finished, request_started
 from django.db import close_old_connections, connection
 from django.test import (
+    AsyncRequestFactory,
     RequestFactory,
     SimpleTestCase,
     TransactionTestCase,
@@ -328,6 +329,12 @@ class AsyncHandlerRequestTests(SimpleTestCase):
         with self.assertRaisesMessage(ValueError, msg):
             await self.async_client.get("/unawaited/")
 
+    @override_settings(FORCE_SCRIPT_NAME="/FORCED_PREFIX/")
+    def test_force_script_name(self):
+        async_request_factory = AsyncRequestFactory()
+        request = async_request_factory.request(**{"path": "/somepath/"})
+        self.assertEqual(request.path, "/FORCED_PREFIX/somepath/")
+
     async def test_sync_streaming(self):
         response = await self.async_client.get("/streaming/")
         self.assertEqual(response.status_code, 200)