util/request_helper: Fix query_with_params() behavior for duplicate keys

Our search endpoint supports having multiple `ids[]` query parameters defined, but the way we generate our paginations fields only considered the last such query parameter until now. This commit fixes the code to include all query parameters instead.

Author: Turbo87

src/tests/routes/crates/list.rs

@@ -673,11 +673,11 @@ async fn multiple_ids() -> anyhow::Result<()> {
     }
 
     let response = anon.search(&format!("{query}&per_page=1&page=2")).await;
-    assert_snapshot!(response.meta.prev_page.unwrap(), @"?ids%5B%5D=unknown&per_page=1&page=1");
-    assert_snapshot!(response.meta.next_page.unwrap(), @"?ids%5B%5D=unknown&per_page=1&page=3");
+    assert_snapshot!(response.meta.prev_page.unwrap(), @"?ids%5B%5D=foo&ids%5B%5D=bar&ids%5B%5D=baz&ids%5B%5D=baz&ids%5B%5D=unknown&per_page=1&page=1");
+    assert_snapshot!(response.meta.next_page.unwrap(), @"?ids%5B%5D=foo&ids%5B%5D=bar&ids%5B%5D=baz&ids%5B%5D=baz&ids%5B%5D=unknown&per_page=1&page=3");
 
     let response = anon.search(&format!("{query}&per_page=1")).await;
-    assert_snapshot!(response.meta.next_page.unwrap(), @"?ids%5B%5D=unknown&per_page=1&seek=Mg");
+    assert_snapshot!(response.meta.next_page.unwrap(), @"?ids%5B%5D=foo&ids%5B%5D=bar&ids%5B%5D=baz&ids%5B%5D=baz&ids%5B%5D=unknown&per_page=1&seek=Mg");
 
     Ok(())
 }

src/util/request_helpers.rs

@@ -47,8 +47,15 @@ impl<T: RequestPartsExt> RequestUtils for T {
     }
 
     fn query_with_params(&self, new_params: IndexMap<String, String>) -> String {
-        let mut params = self.query();
+        let query_bytes = self.uri().query().unwrap_or("").as_bytes();
+
+        let mut params = url::form_urlencoded::parse(query_bytes)
+            .into_owned()
+            .filter(|(key, _)| !new_params.contains_key(key))
+            .collect::<Vec<_>>();
+
         params.extend(new_params);
+
         let query_string = url::form_urlencoded::Serializer::new(String::new())
             .extend_pairs(params)
             .finish();