Fixed #30995 -- Allowed converter.to_url() to raise ValueError to indicate no match.

1 files changed, 8 insertions, 1 deletions

diff --git a/django/urls/resolvers.py b/django/urls/resolvers.py
index 120e0396af..6e3f2443c9 100644
--- a/django/urls/resolvers.py
+++ b/django/urls/resolvers.py
@@ -632,11 +632,18 @@ class URLResolver:
                     candidate_subs = kwargs
                 # Convert the candidate subs to text using Converter.to_url().
                 text_candidate_subs = {}
+                match = True
                 for k, v in candidate_subs.items():
                     if k in converters:
-                        text_candidate_subs[k] = converters[k].to_url(v)
+                        try:
+                            text_candidate_subs[k] = converters[k].to_url(v)
+                        except ValueError:
+                            match = False
+                            break
                     else:
                         text_candidate_subs[k] = str(v)
+                if not match:
+                    continue
                 # WSGI provides decoded URLs, without %xx escapes, and the URL
                 # resolver operates on such URLs. First substitute arguments
                 # without quoting to build a decoded URL and look for a match.