Side A fixes a real off-by-one/index consistency bug (aligning thread_post_index between feed and rank history with 0-based route indices), removes a fragile silent fallback in favor of an explicit invariant check, updates doc comments accordingly, and adds regression tests verifying the fix. Side B is a trivial one-line whitespace/formatting tweak in a view-count span with no functional impact.
constitution · epochs · watch · epoch 3
comparison
c_6a02ffb06a41 (tommy-mor) vs c_859efcb771cb (tommy-mor)
download prompt · raw event · cmp_d925e3f73ed9ec
council reasoning
A fixes a real indexing inconsistency: rank-history thread_post_index becomes proper 0-based (matching /t/tag/N), drops the silent unwrap_or(0)/1-based map, aligns types/docs/UI, and adds assertions. B only strips a decorative " · " from an embed views span—pure presentation nit with negligible lasting design value.
Side A makes a substantive behavioral fix by treating missing thread post indices as an invariant with `expect` instead of silently defaulting to 0, aligns rank-history indexing with the project's 0-based URL scheme, updates documentation, removes unnecessary conditional rendering, and adds integration tests verifying the new behavior. Side B is a minor UI text tweak that only removes a decorative separator before the view count.
sides
A — c_6a02ffb06a41 (tommy-mor)
message
[3bc88847] removed optional
diff preview
diff --git a/server/src/api/rpc.rs b/server/src/api/rpc.rs
index ba93ca87182d49f57dffc8220f604ffa150f9a6c..5049a26b096bd8435d6eb9e75ccb751b6f489061 100644
--- a/server/src/api/rpc.rs
+++ b/server/src/api/rpc.rs
@@ -1337,8 +1337,7 @@ pub async fn handle_rpc_batch(
.ingests_by_scope_thread
.get(&(scope.clone(), e.thread.clone()))
.and_then(|q| q.iter().rev().position(|id| id == &e.post_id))
- .map(|i| i + 1)
- .unwrap_or(0);
+ .expect("rank history post_id must be in ingests_by_scope_thread for (scope, thread)");
RankHistoryRow {
ts: e.ts,
scope_rank: e.scope_rank,
diff --git a/server/src/html/garden.rs b/server/src/html/garden.rs
index 319feb15a6b68d2b5df98b4289fedbc9bdd048d3..23245d6fdfc9019b199ab8417150faf5f3297067 100644
--- a/server/src/html/garden.rs
+++ b/server/src/html/garden.rs
@@ -450,6 +450,7 @@ struct RankHistoryEntryView {
scope_total: usize,
scope_rank_delta: i32,
thread: String,
+ /// 0-based index as [`crate::html::forum::ingest::thread_post_index_in_scope`] / `/t/tag/N`.
thread_post_index: usize,
caused_by: Vec<crate::reducer::VoteData>,
}
@@ -573,11 +574,11 @@ fn build_rank_history(
})
.unwrap_or_default();
- let thread_post_index = reduced.ingests_by_scope_thread
+ let thread_post_index = reduced
+ .ingests_by_scope_thread
.get(&(scope.clone(), e.thread.clone()))
.and_then(|q| q.iter().rev().position(|id| id == &e.post_id))
- .map(|i| i + 1)
- .unwrap_or(0);
+ .expect("rank history post_id must be in ingests_by_scope_thread for (scope, thread)");
RankHistoryEntryView {
ts: e.ts,
@@ -704,11 +705,9 @@ async fn render_scope_view(
span class="muted" { (ago) (label) }
" · "
a href=(thread_href(&e.thread)) { "#" (e.thread) }
- @if e.thread_post_index > 0 {
- " "
- a href=(format!("{}/{}", thread_href(&e.thread), e.thread_post_index)) {
- span class="muted" { "post #" (e.thread_post_index) }
- }
+ " "
+ a href=(format!("{}/{}", thread_href(&e.thread), e.thread_post_index)) {
+ span class="muted" { "post #" (e.thread_post_index) }
}
}
@if e.caused_by.is_empty() {
diff --git a/server/tests/integration.rs b/server/tests/integration.rs
index d4c5bfe9c6f1c71dc61878bd8c5e729b1b7c69ef..9766adb43ad315a64f5df17b79f66718ce149509 100644
--- a/server/tests/integration.rs
+++ b/server/tests/integration.rs
@@ -1322,6 +1322,11 @@ async fn test_rank_history() {
assert_eq!(entry["scope_rank_delta"], 0, "delta is 0 on first appearance");
let caused_by = entry["caused_by"].as_array().unwrap();
assert_eq!(caused_by.len(), 2, "both votes in the ingest touched rust");
+ assert_eq!(
+ entry["thread_post_index"],
+ 0,
+ "rank history links use same 0-based index as /t/hist-test/0"
+ );
ingest(
"00000000-0000-0000-0000-000000000002:rig:test/model",
@@ -1349,6 +1354,16 @@ async fn test_rank_history() {
assert_eq!(caused_by2.len(), 1);
assert!(caused_by2[0]["a"].as_str().unwrap().ends_with("python") ||
caused_by2[0]["b"].as_str().unwrap().ends_with("python"));
+ assert_eq!(
+ hist2[0]["thread_post_index"],
+ 0,
+ "first hist-test post is chronological index 0"
+ );
+ assert_eq!(
+ hist2[1]["thread_post_index"],
+ 1,
+ "second ingest is chronological index 1"
+ );
let hist_rust2 = rpc_batch(
&client,
diff --git a/types/src/lib.rs b/types/src/lib.rs
index edbb923e4d7d41ad82dfc254c3bd697562383527..49abba8ea9f786ef68e3157d2a5d309e15e09ba0 100644
--- a/types/src/lib.rs
+++ b/types/src/lib.rs
@@ -253,7 +253,7 @@ pub struct FeedPost {
/// Primary thread tag (without #), if the ingest declared one.
#[serde(skip_serializing_if = "Option::is_none")]
pub thread: Option<String>,
- /// 1-indexed chronological position of this post within the thread.
+ /// 1-based display ordinal for this post within the thread (feed only; URLs use 0-based paths).
#[serde(skip_serializing_if = "Option::is_none")]
pub thread_post_index: Option<usize>,
/// Full raw body of the ingest document.
@@ -628,7 +628,7 @@ pub struct RankHistoryRow {
pub score: f64,
/// Thread tag of the ingest that triggered this rank change.
pub thread: String,
- /// 1-indexed chronological position of this post within the thread.
+ /// 0-indexed chronological position of this post within the thread (same as `/t/tag/N` routes).
pub thread_post_index: usize,
/// Votes from this ingest that directly touched this item. Empty when change was transitive.
pub caused_by: Vec<VoteRow>,
B — c_859efcb771cb (tommy-mor)
message
[3ce33033] nit
diff preview
diff --git a/server/src/html/mod.rs b/server/src/html/mod.rs
index f57b66f510dfaade1b656990fb2cbb30d16e5bf1..f1b0f31b0c516c2e71ca7938d1ec2764e3b077eb 100644
--- a/server/src/html/mod.rs
+++ b/server/src/html/mod.rs
@@ -353,7 +353,7 @@ fn layout_embed_controls(
data-garden-room=(garden_room_wire.unwrap_or(""))
data-garden-prefix=(garden_path_prefix.unwrap_or("")) {
@if let Some(n) = views {
- span class="view-meta muted" { " · " (n) " views" }
+ span class="view-meta muted" { (n) " views" }
}
div id="errors" {}
(body)
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