Side B fixes a genuine correctness bug (ghost items and falsely-marked-voted pairs from zero-ratio votes) with a minimal, precise change and updates the test to verify the corrected invariant. Side A adds a real feature (pool-scoped voting) with broader surface area and more risk, but is feature churn/expansion rather than a bugfix, and its value is more speculative/UX-dependent than B's clear correctness fix.
constitution · epochs · watch · epoch 3
comparison
c_c6f5afec1d36 (tommy-mor) vs c_abd68b5e771a (tommy-mor)
download prompt · raw event · cmp_c3a459925149e2
council reasoning
B fixes a real reducer correctness bug by dropping zero-ratio votes before ensure_item/voted_pairs side effects, preventing ghost items and false voted-pair state; the updated test asserts empty indexes rather than registered no-edge items. A adds useful pool-scoped voting UX (query param, next-pair constraint, “vote on children” entry point) but is feature surface on top of voting, not a core integrity fix.
Side A implements a substantial new capability: pool-scoped voting, including `/vote?pool=...` routing, pair selection from a parent's children, preservation of pool context through post-vote navigation, and UI entry points for voting on child items. Side B fixes a real reducer bug by moving the zero-ratio early return before `ensure_item` and `voted_pairs` registration to prevent ghost items and incorrectly marked pairs, but it is a localized correctness fix compared with the broader, integrated functionality added in Side A.
sides
A — c_c6f5afec1d36 (tommy-mor)
message
[5350388a] Add pool-scoped voting: /vote?pool=<parent> picks pairs from children. - /vote now accepts an optional `pool` param (parent item path). When provided without left/right, it picks the first unvoted pair from the pool's children. When provided alongside left/right, it constrains "next pair" navigation to siblings within the pool. - "vote on children" button appears on item pages with ≥2 children, linking to /vote?pool=<item>. - Pool is threaded through VoteComparePost → success JS so in-page morph after voting keeps the pool context for next-pair navigation. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
diff preview
diff --git a/server/src/api/ui_html.rs b/server/src/api/ui_html.rs
index 5faa642451d69555cb391974beb0ad22c9355c8c..b79efdb4d52bd445a67f38cbfd61d3507d2b3014 100644
--- a/server/src/api/ui_html.rs
+++ b/server/src/api/ui_html.rs
@@ -193,6 +193,7 @@ async fn dispatch_ui_action(
ratio_right,
explanation,
next,
+ pool,
form_action,
} => {
if form_action != "/ui" {
@@ -239,6 +240,9 @@ async fn dispatch_ui_action(
.into_response();
}
};
+ let pool_id = pool.as_deref().and_then(|p| {
+ crate::path_types::ItemId::parse(p.trim()).map(|i| i.normalized_storage())
+ });
let mut rl = ratio_left.trim().parse::<i32>().unwrap_or(0).max(0);
let mut rr = ratio_right.trim().parse::<i32>().unwrap_or(0).max(0);
if rl == 0 && rr == 0 {
@@ -294,6 +298,7 @@ async fn dispatch_ui_action(
&thread_tag,
&left_id,
&right_id,
+ pool_id.as_ref(),
pid.as_str(),
post_index,
)
diff --git a/server/src/html/garden/pin.rs b/server/src/html/garden/pin.rs
index 5865cfdbc06aeb6555c97380e25591fae6b3d125..1820d7fe7ee167ecbf5ad5124f23b2ab92ffb01f 100644
--- a/server/src/html/garden/pin.rs
+++ b/server/src/html/garden/pin.rs
@@ -79,7 +79,7 @@ pub(super) fn ont_pin_vote_controls(
}
}
} @else {
- a class="ont-vote-compare-btn" href=(vote_compare_href(nav, pi, ¤t, None)) title="Compare and vote" {
+ a class="ont-vote-compare-btn" href=(vote_compare_href(nav, pi, ¤t, None, None)) title="Compare and vote" {
span class="ont-vote-glyph" aria-hidden="true" { "⚖" }
span { "vote" }
}
@@ -121,7 +121,7 @@ pub(super) fn child_row_pin_or_vote(
if nv == 1 { "" } else { "s" },
);
@let aria = format!("Vote; {} pairwise {}", nv, if nv == 1 { "vote" } else { "votes" });
- a class="ont-garden-vote-ico" href=(vote_compare_href(nav, pi, row_item, None)) title=(tip) aria-label=(aria) {
+ a class="ont-garden-vote-ico" href=(vote_compare_href(nav, pi, row_item, None, None)) title=(tip) aria-label=(aria) {
span class="ont-garden-vote-glyph" aria-hidden="true" { "⚖" }
span class="ont-garden-vote-count" { (format!("{}", nv)) }
}
diff --git a/server/src/html/garden/render.rs b/server/src/html/garden/render.rs
index 5c3986ca36902f6c9019a4b5590f0b3b9d2cb4ff..bd8cbce059ee789de6e8dc9b6f69f54beee2f994 100644
--- a/server/src/html/garden/render.rs
+++ b/server/src/html/garden/render.rs
@@ -29,6 +29,7 @@ use super::{
item::{child_depth_from_uri, item_code_label, item_display_path, item_href},
item_page::{build_item_page_view_model, sibling_nav_markup},
pin::{child_row_pin_or_vote, ont_pin_vote_controls, pinned_item_from_jar},
+ vote::vote_pool_href,
};
pub(super) async fn render_scope_view(
@@ -186,12 +187,21 @@ pub(super) async fn render_scope_view(
}
section class="ont-tab-panel ont-tab-panel-children" {
+ @let total_children = model.child_rankings.component_rankings
+ .iter().map(|c| c.ranked.len()).sum::<usize>()
+ + model.child_rankings.unranked_items.len();
h3 {
"ranked child groups"
@if model.child_depth > 1 {
" "
span class="muted" { (format!("(depth {})", model.child_depth)) }
}
+ @if total_children >= 2 {
+ " "
+ a class="ont-vote-children-btn" href=(vote_pool_href(&nav, &model.item)) {
+ "vote on children"
+ }
+ }
}
@if model.child_rankings.component_rankings.is_empty() {
p class="muted" { "no voted pairs yet in this scope" }
diff --git a/server/src/html/garden/tests.rs b/server/src/html/garden/tests.rs
index 6900a6795bcde866a176722149d6378e5127b4c3..c2036fca7752aef63d260e36cfe9649f63b5c550 100644
--- a/server/src/html/garden/tests.rs
+++ b/server/src/html/garden/tests.rs
@@ -105,7 +105,7 @@ fn suggest_next_vote_pair_prefers_unvoted_sibling_pair() {
let content = content_for_garden_view(&reduced, &ScopeId::Public);
let a = ItemId::parse("~/topic/a").unwrap().normalized_storage();
let b = ItemId::parse("~/topic/b").unwrap().normalized_storage();
- let next = suggest_next_vote_pair(content, &a, &b).expect("next sibling pair");
+ let next = suggest_next_vote_pair(content, &a, &b, None).expect("next sibling pair");
assert_ne!(
canonical_edge_items(&next.0, &next.1),
canonical_edge_items(&a, &b)
diff --git a/server/src/html/garden/vote.rs b/server/src/html/garden/vote.rs
index 1d7fc8aa7436bfa9c1186dfd940a8d751ab7e088..2682cfcbd2f834b56459a02831aa225cffe67c58 100644
--- a/server/src/html/garden/vote.rs
+++ b/server/src/html/garden/vote.rs
@@ -211,14 +211,15 @@ pub(crate) async fn vote_compare_post_success_js(
_thread_tag: &str,
left: &ItemId,
right: &ItemId,
+ pool: Option<&ItemId>,
_post_id: &str,
_post_idx: Option<usize>,
) -> String {
let reduced = state.reduced.read().await;
let content = content_for_garden_view(&reduced, &nav.scope());
let edge_history = vote_edge_history_markup(content, left, right);
- let next_pair = suggest_next_vote_pair(content, left, right);
- let nav_markup = vote_compare_nav_markup(nav, next_pair.as_ref());
+ let next_pair = suggest_next_vote_pair(content, left, right, pool);
+ let nav_markup = vote_compare_nav_markup(nav, next_pair.as_ref(), pool);
drop(reduced);
JsBuilder::new()
.morph_inner_selector("#vote-edge-history-region", edge_history)
@@ -231,27 +232,39 @@ pub(super) fn vote_compare_href(
left: &ItemId,
right: &ItemId,
thread_override: Option<&str>,
+ pool: Option<&ItemId>,
) -> String {
let left_q = urlencoding::encode(left.as_str());
let right_q = urlencoding::encode(right.as_str());
- let base = format!(
+ let mut base = format!(
"{}/vote?left={}&right={}",
nav.room_path_prefix_for_vote_compare(),
left_q,
right_q
);
if let Some(t) = thread_override.filter(|s| !s.is_empty()) {
- format!("{}&thread={}", base, urlencoding::encode(t))
- } else {
- base
+ base = format!("{}&thread={}", base, urlencoding::encode(t));
+ }
+ if let Some(p) = pool {
+ base = format!("{}&pool={}", base, urlencoding::encode(p.as_str()));
}
+ base
+}
+
+pub(super) fn vote_pool_href(nav: &ThreadNav, pool_item_str: &str) -> String {
+ format!(
+ "{}/vote?pool={}",
+ nav.room_path_prefix_for_vote_compare(),
+ urlencoding::encode(pool_item_str)
+ )
}
fn vote_compare_nav_markup(
nav: &ThreadNav,
next_pair: Option<&(ItemId, ItemId)>,
+ pool: Option<&ItemId>,
) -> maud::Markup {
- let next_pair_href = next_pair.map(|(nl, nr)| vote_compare_href(nav, nl, nr, None));
+ let next_pair_href = next_pair.map(|(nl, nr)| vote_compare_href(nav, nl, nr, None, pool));
html! {
div class="vote-compare-nav" {
@if let Some(href) = &next_pair_href {
@@ -267,8 +280,15 @@ pub(super) fn suggest_next_vote_pair(
content: &ContentState,
current_left: &ItemId,
current_right: &ItemId,
+ pool_parent: Option<&ItemId>,
) -> Option<(ItemId, ItemId)> {
- let pool: Vec<ItemId> = if current_left.parent().as_ref().map(|p| p.as_str())
+ let pool: Vec<ItemId> = if let Some(parent) = pool_parent {
+ content
+ .item_children
+ .get(parent)
+ .map(|s| s.iter().cloned().collect())
+ .unwrap_or_default()
+ } else if current_left.parent().as_ref().map(|p| p.as_str())
== current_right.parent().as_ref().map(|p| p.as_str())
{
current_left
@@ -322,10 +342,14 @@ pub(super) fn vote_compare_item_card(
}
#[derive(Debug, Deserialize)]
pub struct VoteCompareQuery {
- pub left: String,
- pub right: String,
+ #[serde(default)]
+ pub left: Option<String>,
+ #[serde(default)]
+ pub right: Option<String>,
#[serde(default)]
pub thread: Option<String>,
+ #[serde(default)]
+ pub pool: Option<String>,
}
/// Public pairwise vote UI — `/vote?left=&right=&thread=`.
@@ -376,17 +400,53 @@ async fn vote_compare_inner(
jar: CookieJar,
uri: Uri,
) -> axum::response::Response {
- let left = match ItemId::parse(q.left.trim()) {
- Some(i) => i.normalized_storage(),
- None => return (StatusCode::NOT_FOUND, "bad left item").into_response(),
+ let pool_id: Option<ItemId> = match q.pool.as_deref() {
+ Some(p) => match ItemId::parse(p.trim()) {
+ Some(i) => Some(i.normalized_storage()),
+ None => return (StatusCode::BAD_REQUEST, "bad pool item").into_response(),
+ },
+ None => None,
};
- let right = match ItemId::parse(q.right.trim()) {
- Some(i) => i.normalized_storage(),
- None => return (StatusCode::NOT_FOUND, "bad right item").into_response(),
+
+ let (left, right) = match (q.left.as_deref(), q.right.as_deref()) {
+ (Some(l), Some(r)) => {
+ let left = match ItemId::parse(l.trim()) {
+ Some(i) => i.normalized_storage(),
+ None => return (StatusCode::NOT_FOUND, "bad left item").into_response(),
+ };
+ let right = match ItemId::parse(r.trim()) {
+ Some(i) => i.normalized_storage(),
+ None => return (StatusCode::NOT_FOUND, "bad right item").into_response(),
+ };
+ if left == right {
+ return (StatusCode::BAD_REQUEST, "items must differ").into_response();
+ }
+ (left, right)
+ }
+ (None, None) => {
+ let Some(pool) = pool_id.as_ref() else {
+ return (StatusCode::BAD_REQUEST, "provide left+right or pool").into_response();
+ };
+ let reduced = state.reduced.read().await;
+ let content = content_for_garden_view(&reduced, &nav.scope());
+ let children: Vec<ItemId> = content
+ .item_children
+ .get(pool)
+ .map(|s| s.iter().cloned().collect())
+ .unwrap_or_default();
+ if children.len() < 2 {
+ drop(reduced);
+ return (StatusCode::BAD_REQUEST, "pool has fewer than 2 children to compare").into_response();
+ }
+ let pair = suggest_next_pair_in_pool(&content.ranking_group, &children, None);
+ drop(reduced);
+ match pair {
+ Some(p) => p,
+ None => return (StatusCode::BAD_REQUEST, "no pairs available in pool").into_response(),
+ }
+ }
+ _ => return (StatusCode::BAD_REQUEST, "provide both left and right, or just pool").into_response(),
};
- if left == right {
- return (StatusCode::BAD_REQUEST, "items must differ").into_response();
- }
let reduced = state.reduced.read().await;
let content = content_for_garden_view(&reduced, &nav.scope());
@@ -409,7 +469,7 @@ async fn vote_compare_inner(
let left_body = content.item_bodies.get(&left).cloned();
let right_body = content.item_bodies.get(&right).cloned();
let item_bodies_for_cards = content.item_bodies.
… preview truncated; 1,501 characters omittedB — c_abd68b5e771a (tommy-mor)
message
[81de487b] Fix zero-ratio guard in reducer to drop before registering items or pair. Previously the early-return for zero-weight votes happened after ensure_item and voted_pairs.insert, leaving ghost items in the index and the pair incorrectly marked as voted. Move the check to before any side effects. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
diff preview
diff --git a/server/src/reducer.rs b/server/src/reducer.rs
index 6841d35cfc9de2389f340a22b8a45acb335e36c3..0e36979abe0f051493038ff7e652efc7f7a0ac80 100644
--- a/server/src/reducer.rs
+++ b/server/src/reducer.rs
@@ -112,6 +112,10 @@ impl GroupState {
if vote.ratio_right < 0 {
vote.ratio_right = 0;
}
+ if vote.ratio_left == 0 || vote.ratio_right == 0 {
+ // Zero on either side produces no valid edge; drop before registering items or pair.
+ return;
+ }
let a_idx = self.ensure_item(&vote.a);
let b_idx = self.ensure_item(&vote.b);
@@ -121,10 +125,6 @@ impl GroupState {
let w_a = vote.ratio_left as f64;
let w_b = vote.ratio_right as f64;
- if w_a == 0.0 || w_b == 0.0 {
- // Zero on either side produces no valid edge; drop the vote.
- return;
- }
self.add_edge_weight(b_idx, a_idx, w_a);
self.add_edge_weight(a_idx, b_idx, w_b);
diff --git a/server/tests/basic.rs b/server/tests/basic.rs
index cc8c1a0d139f3722ba6ecd13dd001c65be835b67..08159f4a7f0850fd165817a4a1af4f31ced2ad76 100644
--- a/server/tests/basic.rs
+++ b/server/tests/basic.rs
@@ -546,12 +546,10 @@ fn reducer_negative_ratio_clamped_to_zero() {
delegate: Some("00000000-0000-0000-0000-000000000000:test:local/test".to_string()),
thread_tag: "t".to_string(),
});
- // Items are registered, but the zero-clamped vote produces no edges.
- assert_eq!(group.idx_to_item.len(), 2);
- let a_idx = group.item_to_idx[&item_id("https://slug.social/~/t/a")];
- let b_idx = group.item_to_idx[&item_id("https://slug.social/~/t/b")];
- assert!(!group.edges.contains_key(&(a_idx, b_idx)));
- assert!(!group.edges.contains_key(&(b_idx, a_idx)));
+ // Nothing registered: zero-clamped vote is dropped before ensure_item.
+ assert!(group.idx_to_item.is_empty());
+ assert!(group.edges.is_empty());
+ assert!(group.voted_pairs.is_empty());
}
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