Monorepo for Tangled
sites: enforce trailing slash canonical redirects for sub-path sites
Redirect directory-like paths to their trailing slash variants
(e.g. /docs -> /docs/) to ensure consistent canonical URLs and
relative asset resolution for sub-path sites.
authored by
andreruffert.com
and committed by
Tangled
(May 18, 2026, 3:36 PM +0300)
8fdcf82c
81ab1c86
+28
+28
sites/src/lib.rs
+28
sites/src/lib.rs
···
84
84
}
85
85
}
86
86
87
+
/// Returns true when a directory-like path is missing a trailing slash.
88
+
///
89
+
/// Examples:
90
+
/// - "/docs" => true
91
+
/// - "/docs/" => false
92
+
/// - "/file.txt" => false
93
+
/// - "/" => false
94
+
fn needs_trailing_slash(path: &str) -> bool {
95
+
if path == "/" || path.ends_with('/') {
96
+
return false;
97
+
}
98
+
let last_segment = path.rsplit('/').next().unwrap_or(path);
99
+
!last_segment.contains('.')
100
+
}
101
+
102
+
/// Return the canonical URL with a trailing slash appended to the path.
103
+
fn with_trailing_slash(url: &Url) -> String {
104
+
let mut url = url.clone();
105
+
url.set_path(&format!("{}/", url.path()));
106
+
url.to_string()
107
+
}
108
+
87
109
/// Fetch an object from R2, falling back to appending /index.html if the
88
110
/// key looks like a directory (no file extension in the last segment).
89
111
async fn fetch_from_r2(bucket: &Bucket, key: &str) -> Result<Option<Object>> {
···
142
164
143
165
if is_excluded(path) {
144
166
return Fetch::Request(req).send().await;
167
+
}
168
+
169
+
// Canonical redirect for directory-like paths.
170
+
if needs_trailing_slash(path) {
171
+
let redirect_url = with_trailing_slash(&url);
172
+
return Response::redirect(redirect_url.parse()?, 308);
145
173
}
146
174
147
175
// Single KV lookup for the whole domain.