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Summary of ChangesHello @ding113, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed! 这个拉取请求旨在解决排行榜视图中存在的无限循环问题，该问题在用户切换 Tab 时会不正确地触发状态更新。通过调整 useEffect 钩子的依赖项，确保了组件行为的稳定性，并避免了不必要的渲染循环，从而提升了用户体验。 Highlights
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Code Review
此 PR 修复了排行榜 Tab 切换时因 useEffect 依赖项不当而导致的无限循环问题。通过从依赖数组中移除 scope 和 period 状态，成功解决了该 bug。这是一个正确的修复。
我有一个建议可以进一步优化代码：可以移除 useEffect 中的 if 判断，直接调用 setScope 和 setPeriod。React 会在状态值未改变时自动跳过重新渲染，这样做可以移除 eslint-disable 注释，使代码更简洁且符合 React Hooks 的最佳实践。
🔒 Security Scan Results✅ No security vulnerabilities detected This PR has been scanned against OWASP Top 10, CWE Top 25, and common security anti-patterns. No security issues were identified in the code changes. PR SummaryThis PR contains a single change to fix a React Scanned Categories
NotesThe change modifies React hook dependencies but does not introduce any security concerns. The disabled ESLint rule is for the 🤖 Automated security scan by Claude AI |
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🔴 Critical: Logic Error - Stale Closure Bug
Why this is a problem: By removing scope and period from the dependency array, the conditionals on lines 38 and 45 will use stale values captured at component mount time. This means:
- When the user clicks a tab to change
scopeorperiod, the effect won't re-run - The comparisons
normalizedScope !== scopeandnormalizedPeriod !== periodwill use the old values from the closure - This creates incorrect behavior when URL params change while component is mounted
Why the infinite loop occurred: The infinite loop was caused by:
- State update (
setScope/setPeriod) → triggers effect (because deps includescope/period) - Effect runs → calls
setScope/setPeriodagain → triggers effect again → loop
Suggested fix - Use functional state updates to avoid needing the current value in deps:
useEffect(() => {
const urlScope = searchParams.get("scope");
const normalizedScope = urlScope === "provider" && isAdmin ? "provider" : "user";
// Use functional update to compare with current value
setScope(prevScope => prevScope !== normalizedScope ? normalizedScope : prevScope);
const urlPeriod = searchParams.get("period");
const normalizedPeriod = urlPeriod === "monthly" ? "monthly" : "daily";
// Use functional update to compare with current value
setPeriod(prevPeriod => prevPeriod !== normalizedPeriod ? normalizedPeriod : prevPeriod);
}, [isAdmin, searchParams]); // Only external deps, no state depsThis avoids the infinite loop because:
- State setters with functional updates don't trigger re-render if value doesn't change (React optimization)
- No need for
scope/periodin deps since we use theprevvalue from the setter - The effect only runs when URL params or
isAdminactually change
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🟡 Medium: Missing URL Synchronization
Why this is a problem: The tab handlers update local state but don't update the URL query parameters. This creates an inconsistency:
- User clicks "Provider Ranking" tab
onValueChangeupdates local state:scope = "provider"- URL remains unchanged (no query params)
- If user refreshes page, they'll see "User Ranking" again (URL has no
?scope=provider) - The "deep linking" feature mentioned in the comment on line 33 doesn't work for user interactions
Current behavior:
- External links with
?scope=provider&period=monthlywork correctly - But clicking tabs doesn't update URL, so:
- Can't share current view via URL
- Browser back/forward buttons don't work as expected
- Page refresh loses tab selection
Suggested fix - Add URL synchronization to tab handlers:
import { useRouter, usePathname } from "next/navigation";
export function LeaderboardView({ isAdmin }: LeaderboardViewProps) {
// ... existing code ...
const router = useRouter();
const pathname = usePathname();
const handleScopeChange = (newScope: typeof scope) => {
setScope(newScope);
const params = new URLSearchParams(searchParams.toString());
params.set("scope", newScope);
router.replace(pathname + "?" + params.toString(), { scroll: false });
};
const handlePeriodChange = (newPeriod: typeof period) => {
setPeriod(newPeriod);
const params = new URLSearchParams(searchParams.toString());
params.set("period", newPeriod);
router.replace(pathname + "?" + params.toString(), { scroll: false });
};
// ... later in JSX ...
<Tabs value={scope} onValueChange={handleScopeChange}>
<Tabs value={period} onValueChange={handlePeriodChange}>This would make the URL truly the "source of truth" and the first useEffect would work correctly without conflicts.
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⚠️ CORRECTION TO PREVIOUS REVIEW
I need to retract my previous comment about "stale closure bug". After deeper analysis, the current fix is actually correct and works as intended.
Why the fix works:
The effect closure captures scope and period values at the moment the effect runs, not at mount time. Since the effect only runs when searchParams or isAdmin change, it always has the current state values.
Trace through the scenarios:
- User clicks tab: Effect doesn't run (searchParams unchanged) → tab switches successfully ✅
- URL params change: Effect runs with current state values → correctly syncs URL to state ✅
- No infinite loop: Removing state from deps breaks the loop while preserving functionality ✅
The real issue is the one I mentioned in my second comment: missing URL synchronization when users click tabs. The current fix solves the infinite loop bug correctly, but leaves room for improvement in URL synchronization.
Recommendation: The current fix can be merged as-is to resolve the blocking issue #177. The URL synchronization enhancement can be addressed in a follow-up PR if desired.
My apologies for the confusion in my initial review.
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📋 Code Review Summary
This PR successfully fixes the infinite loop bug in leaderboard tab switching by removing scope and period from the useEffect dependency array. The fix is correct and resolves issue #177.
🔍 Issues Found
- Critical (🔴): 0 issues
- High (🟠): 0 issues
- Medium (🟡): 1 issue
- Low (🟢): 0 issues
🎯 Priority Actions
- Medium Priority: Consider adding URL synchronization to tab click handlers so that tab selections are reflected in the URL and persist across page refreshes. This would enable true deep linking and improve UX with browser back/forward navigation. However, this is an enhancement and not blocking for merge.
💡 General Observations
The fix correctly addresses the root cause of the infinite loop by breaking the circular dependency between state updates and effect re-execution. The effect closure pattern used here is safe because it captures current state values when searchParams changes, not stale values from mount time.
Recommendation: ✅ Approve for merge - The fix correctly resolves the blocking bug. The URL synchronization enhancement mentioned above can be addressed in a follow-up PR if desired.
🤖 Automated review by Claude AI - focused on identifying issues for improvement
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Summary
修复排行榜页面 Tab 切换时触发无限循环导致页面卡死的问题。
Problem
PR #168 (commit 281ed80) 引入了一个 bug：在
useEffect依赖数组中包含了scope和period状态变量。当这些状态被更新时，会重新触发 useEffect，而 useEffect 内部又会检查并更新这些状态，导致无限循环。Solution
从
useEffect依赖数组中移除scope和period，因为：searchParamseslint-disable注释说明原因Changes
src/app/[locale]/dashboard/leaderboard/_components/leaderboard-view.tsxscope和period从 useEffect 依赖数组Testing
Related Issues
Closes #177