feat(教师统计): 提交统计面板返修 —— 统计口径、未完成分两栏、多题、自动刷新
排查这个面板时发现的一串问题和缺口,一起修掉。改动集中在 `GET /submissions/statistics` 和 `StatisticsPanel.vue`,两边互相咬着, 拆不成独立的 commit。 **「已解决」数的不是题数**(真在显示错数字)。`count(*) filter (accepted)` 按用户名分组、没有 distinct problem_id,同一道题重复 AC 会重复计数。查单道题时 看不出来,老师查「这节课全班」时「已解决 5」可能是同一道题交了 5 次。新增 `solvedCount = count(distinct problem_id) filter (accepted)`,表格那一列换成它; `acceptedCount` 保留,正确率的分子仍然是提交条数。 **正确率把判题中的算进了分母**。PENDING / JUDGING 进分母不进分子,全班同时交卷的 那几秒正确率凭空掉一截 —— 而老师盯着看的就是这个数。分母改成判完的条数, `UNJUDGED_RESULTS` 提到 judge/status.ts 共用。总提交仍是全部条数(交了就算交过, 否则人数口径会跟着变,正在判的学生会掉进「没交」名单),另外下发 `judgingCount`, 非零时面板多显示一块「判题中」,三个数字才对得上。 **「未完成」实际是「一次没交」**。做了但一次没对的学生既不在「完成人数」也不在 未完成名单,等于从屏幕上消失 —— 而那恰恰是最该去看一眼的人。新增 `dataAttempted`,未完成栏拆成「还没交」/「交了没对」两组,tab 计数是两者之和。 请假隐藏对两组同时生效:他们同样占着班级人数这个分母,只藏一半会把完成度算错。 **点名字能看到错在哪**。`dataAttempted` 带上最近一条提交的题号、状态和 `statistic_info.err_info`(截断 400 字),点名字弹出来,还能一步跳到代码。 老师不用再切到提交列表、翻到这个人、点开代码。 **支持一次查几道题**。题号框接受 `1001,1005,1010`(中英文逗号、分号、空格都当 分隔符,投影前手敲不该因为打了全角逗号就查不出来),有一个题号不存在就整体 404。 **完成 = 这几道全解决**;只填一道时和原来完全等价,不填题号时退回「至少做出一道」。 差一道的人落在「交了没全对」里,名字后面缀 `2/3题`。 **零提交时整块面板消失**。判空条件是 `count.total > 0`,可一节课刚开始一条提交都 没有、后端已经把整份花名册当作「未完成」返回了 —— 最该看名单的时刻反而只显示 「暂无数据」。流程图那边更彻底:`/flowcharts/statistics` 的零提交分支把 `dataUnaccepted` 写死成空数组,名单压根没下发。 **面板不会自己刷新**。打开是空的、要点一次按钮,拿到的是那一刻的快照。改成打开即查 + 每 15 秒滚动重查,页面切到后台就停,关掉面板随组件卸载停掉。上一次没回来就跳过 这一次。班级从手打 `ks251` 换成下拉(选项来自网站配置的 class_list,和登录框同一份), 保留自由输入,查过的班级记进 localStorage 下次带上 —— 机房电脑一台对一个班。 **明细查询没有 LIMIT**。展开行用的 submissionItems 原来把窗口内**全部**提交捞进内存 再原样序列化,「全部时段 + 不填条件」就是十几万条。改成只取有 AC 的人、每人最近 50 条, 截断用窗口函数发生在数据库侧;表格「提交数」仍是真实总数。 **顺带**:`personRate` 前端从来没读过(完成度是前端按「减掉请假人数的分母」自己算的), 从契约里删掉;「语法未过」的题数单列出来(AST_CHECK_FAILED 全站仍然算通过,口径没动, 只是让老师看得见谁是绕过语法要求做出来的,那批人教学上没达标)。 实跑验证(dev 全栈 + 浏览器): - 已解决:student 两条 AC 都在题号 5 上 —— 改前显示 2,改后显示 1 - 正确率:临时把两条改成 PENDING/JUDGING,12 条提交 2 条通过 —— 16.67% → 20%, 面板多出「判题中 2」,表格显示「12(2 条判题中)」 - 未完成两栏:student2 没交、student 交了 12 次没对,请假隐藏 student 后 班级人数 2→1、tab 2→1、出现「恢复 1 位」 - 错因弹层:点 student 弹出「最近一次:1020 · 编译失败 / Test case not found / 看代码」 - 多题:`1004` 完成 1 人;`1004,1005` 完成 0 人、交了没全对 student 1/2题 8次; 全角逗号同上;`1004,9999` 报 `Problem 9999 does not exist` - 自动刷新:打开即发请求,之后 04:44:22 → 04:44:36 → 04:44:51 → 04:45:06 每 15 秒 一次且窗口跟着滚;关掉面板后 20 秒请求数不再增长 - 班级下拉:选「25计算机1班」→ ks251,重开面板自动带上并立刻查 tsc / vue-tsc / check:routes 全过。验证用的 dev 库改动已还原。 Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01KqjE6qPo67fqVDKn6Bx7yd
This commit is contained in:
@@ -235,7 +235,12 @@ flowchartRoutes.get("/flowcharts/statistics", requireTeacher, async (c) => {
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personCount: roster.length,
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completedCount: 0,
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wordFrequencies: [],
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dataUnaccepted: [],
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// 一条提交都没有时,花名册上的人**全都**是「没做」—— 原来这里写死空数组,
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// 于是一节课刚开始、最该点名的时候,教师面板反而一个名字都不给
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dataUnaccepted: roster.map((row) => ({
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username: row.username,
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realName: stripClassPrefix(row.username, row.className),
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})),
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}
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if (rows.length === 0) return success(c, flowchartStatisticsSchema.parse(empty))
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@@ -22,7 +22,7 @@ import {
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import type { AuthUser } from "../auth/session"
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import { db, schema } from "../db"
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import { failure, success } from "../http"
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import { JudgeStatus } from "../judge/status"
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import { JudgeStatus, UNJUDGED_RESULTS } from "../judge/status"
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import { judgeQueue } from "../queue"
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import {
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canAccessContest,
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@@ -180,6 +180,11 @@ submissionRoutes.get("/submissions/today-count", async (c) => {
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const ACCEPTED_RESULTS = [JudgeStatus.ACCEPTED, JudgeStatus.AST_CHECK_FAILED]
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/** 正确率。分母是判完的条数,一条都还没判完时给 0 而不是 NaN */
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function judgedRate(accepted: number, judged: number) {
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return judged > 0 ? rounded((accepted / judged) * 100) : 0
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}
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/**
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* 统计接口共用的时间窗解析。旧后端 `end` 必填、`start` 可选(不给就是「全部时段」)。
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*/
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@@ -190,23 +195,173 @@ function statisticsRange(c: { req: { query(name: string): string | undefined } }
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return { start: start || null, end }
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}
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/** 一次最多查几道题。课堂上一节课布置三五道,20 是留足了余量的上限 */
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const STATISTICS_MAX_PROBLEMS = 20
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/**
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* 按题号(展示用的 _id)定位公开题目。找不到时统计接口要报错而不是退化成「全部题目」,
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* 否则教师打错一个字就会看到全站数据还以为是本题的。
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* 题号框允许一次填几道:`1001,1005,1010`。中英文逗号、空格、分号都当分隔符 ——
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* 老师在投影前手敲,不该因为打了个全角逗号就查不出来。
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*/
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async function findPublicProblemByDisplayId(displayId: string) {
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const [row] = await db
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.select({ id: schema.problem.id })
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function parseDisplayIds(raw: string) {
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const seen = new Set<string>()
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const ids: string[] = []
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for (const part of raw.split(/[,,;;\s]+/)) {
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const id = part.trim()
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if (!id) continue
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const key = id.toLowerCase()
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if (seen.has(key)) continue
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seen.add(key)
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ids.push(id)
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}
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return ids
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}
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/**
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* 按题号(展示用的 _id)定位公开题目。**有一个找不到就整体报错**,不退化成「全部题目」——
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* 否则教师打错一个字就会看到全站数据还以为是这几道题的。
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*/
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async function findPublicProblemsByDisplayIds(displayIds: string[]) {
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const lowered = displayIds.map((id) => id.toLowerCase())
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const rows = await db
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.select({ id: schema.problem.id, displayId: schema.problem.displayId })
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.from(schema.problem)
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.where(
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and(
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sql`lower(${schema.problem.displayId}) = lower(${displayId})`,
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inArray(sql`lower(${schema.problem.displayId})`, lowered),
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isNull(schema.problem.contestId),
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eq(schema.problem.visible, true),
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),
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)
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.limit(1)
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return row ?? null
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const found = new Set(rows.map((row) => row.displayId.toLowerCase()))
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const missing = displayIds.find((id) => !found.has(id.toLowerCase()))
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return { ids: rows.map((row) => row.id), missing: missing ?? null }
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}
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/**
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* 表格展开行要看的「这个人交了哪几次」。两道闸都是为了不让「全部时段 + 不填条件」
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* 把十几万条提交整个搬进响应体:
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*
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* - **只取有 AC 的人**。明细只挂在 `data` 里,而 `data` 本来就只留有 AC 的人,
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* 原来给「一次没对的人」也捞一份明细,捞完直接扔掉。
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* - **每人只留最近 50 条**。展开行是一排 120px 的按钮,几十个就已经翻不动了。
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* 表格「提交数」那一列走的是 perUser 的 count,仍然是真实总数,不受这里截断影响。
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*/
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const STATISTICS_ITEMS_PER_USER = 50
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async function submissionItemsByUser(where: SQL | undefined, usernames: string[]) {
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const byUser = new Map<string, { id: string; result: number }[]>()
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if (!usernames.length) return byUser
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// 走窗口函数而不是「查全量再在 JS 里截断」:截断要发生在数据库那边才省得下来。
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const rows = await db.execute<{ username: string; id: string; result: number }>(sql`
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select username, id, result from (
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select
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${schema.submission.username} as username,
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${schema.submission.id} as id,
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${schema.submission.result} as result,
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row_number() over (
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partition by ${schema.submission.username}
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order by ${schema.submission.createTime} desc
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) as rn
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from ${schema.submission}
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where ${and(where, inArray(schema.submission.username, usernames))}
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) t
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where rn <= ${STATISTICS_ITEMS_PER_USER}
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-- rn 就是「这个人的第几新」,外层不排的话展开行里的按钮是乱序的
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order by username, rn
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`)
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for (const row of rows) {
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const bucket = byUser.get(row.username)
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if (bucket) bucket.push({ id: row.id, result: row.result })
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else byUser.set(row.username, [{ id: row.id, result: row.result }])
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}
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return byUser
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}
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/** 错误摘要截断长度。编译错误能刷几十行,弹层里放不下,也没必要 */
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const FAILURE_MESSAGE_LIMIT = 400
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/**
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* 「交了没对」那一栏点开要看的:这个人**最近一条**提交错在哪。
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*
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* 有了它,老师看到「张三 12次」之后不用再切到提交列表、翻到这个人、点开代码 ——
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* 点一下名字就知道是编译错了还是答案错了、报的什么。err_info 是判题机塞进
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* statistic_info 的那一段,提交详情页读的也是它。
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*/
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async function lastFailureByUser(where: SQL | undefined, usernames: string[]) {
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const byUser = new Map<
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string,
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{ id: string; problem: string; result: number; error: string | null }
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>()
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if (!usernames.length) return byUser
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// 不给 submission 起别名:where 里的条件是 drizzle 拼的,引用的是 "submission"."x"
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const rows = await db.execute<{
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username: string
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id: string
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problem: string
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result: number
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error: string | null
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}>(sql`
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select username, id, problem, result, error from (
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select
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${schema.submission.username} as username,
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${schema.submission.id} as id,
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${schema.problem.displayId} as problem,
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${schema.submission.result} as result,
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left(${schema.submission.statisticInfo}->>'err_info', ${FAILURE_MESSAGE_LIMIT}) as error,
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row_number() over (
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partition by ${schema.submission.username}
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order by ${schema.submission.createTime} desc
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) as rn
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from ${schema.submission}
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join ${schema.problem} on ${schema.problem.id} = ${schema.submission.problemId}
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where ${and(where, inArray(schema.submission.username, usernames))}
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) t
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where rn = 1
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`)
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for (const row of rows) {
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byUser.set(row.username, {
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id: row.id,
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problem: row.problem,
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result: row.result,
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error: row.error,
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})
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}
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return byUser
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}
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/**
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* 「答案对了,但没按要求的语法写」的题数(AST_CHECK_FAILED)。
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*
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* 只算**最后也没改对**的:同一道题上既有 AST_CHECK_FAILED 又有 ACCEPTED,说明学生后来
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* 改成要求的写法了,不该再拿这个提醒老师。所以要先按「人 × 题」聚一层,不能直接
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* `count(distinct problem_id) filter (result = 10)`。
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*
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* 口径本身不动 —— AST_CHECK_FAILED 仍然算通过(答案确实对了,全站一致)。这里只是
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* 让教师看得见「这几个人是绕过要求做出来的」,教学上那不算达标。
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*/
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async function astOnlyByUser(where: SQL | undefined, usernames: string[]) {
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const byUser = new Map<string, number>()
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if (!usernames.length) return byUser
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const rows = await db.execute<{ username: string; n: number }>(sql`
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select username, count(*)::int as n from (
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select
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${schema.submission.username} as username,
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bool_or(${schema.submission.result} = ${JudgeStatus.AST_CHECK_FAILED}) as has_ast,
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bool_or(${schema.submission.result} = ${JudgeStatus.ACCEPTED}) as has_ac
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from ${schema.submission}
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where ${and(where, inArray(schema.submission.username, usernames))}
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group by ${schema.submission.username}, ${schema.submission.problemId}
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) t
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where has_ast and not has_ac
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group by username
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`)
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for (const row of rows) byUser.set(row.username, row.n)
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return byUser
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}
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/**
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@@ -236,11 +391,16 @@ submissionRoutes.get("/submissions/statistics", requireTeacher, async (c) => {
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]
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if (range.start) filters.push(sql`${schema.submission.createTime} >= ${range.start}`)
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const displayId = c.req.query("problemId")?.trim()
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if (displayId) {
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const problem = await findPublicProblemByDisplayId(displayId)
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if (!problem) return failure(c, 404, "problem-not-found", "Problem does not exist")
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filters.push(eq(schema.submission.problemId, problem.id))
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const displayIds = parseDisplayIds(c.req.query("problemId") ?? "")
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if (displayIds.length > STATISTICS_MAX_PROBLEMS) {
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return failure(c, 400, "invalid-request", `At most ${STATISTICS_MAX_PROBLEMS} problems`)
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}
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if (displayIds.length) {
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const { ids, missing } = await findPublicProblemsByDisplayIds(displayIds)
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if (missing) {
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return failure(c, 404, "problem-not-found", `Problem ${missing} does not exist`)
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}
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filters.push(inArray(schema.submission.problemId, ids))
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}
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const username = c.req.query("username")?.trim()
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@@ -248,10 +408,22 @@ submissionRoutes.get("/submissions/statistics", requireTeacher, async (c) => {
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const where = and(...filters)
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const acceptedFilter = sql`count(*) filter (where ${inArray(schema.submission.result, ACCEPTED_RESULTS)})`
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// 判题中的条数。要单独数出来,正确率的分母才能把它们摘掉
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const judgingFilter = sql`count(*) filter (where ${inArray(schema.submission.result, UNJUDGED_RESULTS)})`
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/**
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* **解决的题数**,不是通过的提交条数。同一道题重复 AC(改完再交一次仍然对)
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* 在这里只算一道 —— 表格那一列叫「已解决」,数条数就名不副实了。
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* 指定了题号时它最多是 1,不指定时才看得出差别(老师查「这节课全班」就是这种)。
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*/
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const solvedFilter = sql`count(distinct ${schema.submission.problemId}) filter (where ${inArray(schema.submission.result, ACCEPTED_RESULTS)})`
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const [[totals], perUser, rosterRows, items] = await Promise.all([
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const [[totals], perUser, rosterRows] = await Promise.all([
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db
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.select({ total: count(), accepted: acceptedFilter.mapWith(Number) })
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.select({
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total: count(),
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accepted: acceptedFilter.mapWith(Number),
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judging: judgingFilter.mapWith(Number),
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})
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.from(schema.submission)
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.where(where),
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db
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@@ -259,6 +431,8 @@ submissionRoutes.get("/submissions/statistics", requireTeacher, async (c) => {
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username: schema.submission.username,
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submissionCount: count(),
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acceptedCount: acceptedFilter.mapWith(Number),
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solvedCount: solvedFilter.mapWith(Number),
|
||||
judgingCount: judgingFilter.mapWith(Number),
|
||||
})
|
||||
.from(schema.submission)
|
||||
.where(where)
|
||||
@@ -266,26 +440,34 @@ submissionRoutes.get("/submissions/statistics", requireTeacher, async (c) => {
|
||||
.orderBy(desc(count())),
|
||||
// 只有指定了用户名才有「班级人数」这个概念;不指定时分母无意义,旧后端也返回 0
|
||||
username ? matchedStudents(username) : Promise.resolve([]),
|
||||
db
|
||||
.select({
|
||||
username: schema.submission.username,
|
||||
id: schema.submission.id,
|
||||
result: schema.submission.result,
|
||||
})
|
||||
.from(schema.submission)
|
||||
.where(where)
|
||||
.orderBy(desc(schema.submission.createTime)),
|
||||
])
|
||||
|
||||
const submissionCount = totals?.total ?? 0
|
||||
const acceptedCount = totals?.accepted ?? 0
|
||||
const judgingCount = totals?.judging ?? 0
|
||||
// 正确率的分母是**判完的条数**,不是总条数
|
||||
const judgedCount = submissionCount - judgingCount
|
||||
|
||||
const itemsByUser = new Map<string, { id: string; result: number }[]>()
|
||||
for (const item of items) {
|
||||
const bucket = itemsByUser.get(item.username)
|
||||
if (bucket) bucket.push({ id: item.id, result: item.result })
|
||||
else itemsByUser.set(item.username, [{ id: item.id, result: item.result }])
|
||||
}
|
||||
/**
|
||||
* 「做完了」的判定。**指定了几道题,就要几道都解决**(这是教师选的口径:
|
||||
* 「今天布置三道,谁全做完了」)—— 做出两道差一道的人落在「交了没全对」那一栏,
|
||||
* 那里带着 `solvedCount`,老师看得出他差几道。
|
||||
*
|
||||
* 只填一道题时 `solvedCount >= 1` 和原来的 `acceptedCount > 0` 完全等价;
|
||||
* 不填题号时无所谓「全部」,退回「至少做出一道」。
|
||||
*/
|
||||
const requiredSolved = displayIds.length
|
||||
const isDone = (row: { solvedCount: number; acceptedCount: number }) =>
|
||||
requiredSolved > 0 ? row.solvedCount >= requiredSolved : row.acceptedCount > 0
|
||||
|
||||
// 表格列的是做完了的人。没做完的(一条没交 / 交了没全对)在「未完成」那一栏
|
||||
const acceptedUsers = perUser.filter(isDone)
|
||||
// 这两个都要等 acceptedUsers 定下来才能查,所以进不了上面那个 Promise.all
|
||||
const acceptedNames = acceptedUsers.map((row) => row.username)
|
||||
const [itemsByUser, astOnlyByUserMap] = await Promise.all([
|
||||
submissionItemsByUser(where, acceptedNames),
|
||||
astOnlyByUser(where, acceptedNames),
|
||||
])
|
||||
|
||||
const submittedUsernames = new Set(perUser.map((row) => row.username))
|
||||
const classNames = new Map<string, string | null>()
|
||||
@@ -297,17 +479,17 @@ submissionRoutes.get("/submissions/statistics", requireTeacher, async (c) => {
|
||||
for (const row of rows) classNames.set(row.username, row.className)
|
||||
}
|
||||
|
||||
// 只列出有正确提交的人。做了但一次没对的学生落在「未完成」那一栏
|
||||
const data = perUser
|
||||
.filter((row) => row.acceptedCount > 0)
|
||||
.map((row) => ({
|
||||
username: row.username,
|
||||
className: classNames.get(row.username) ?? null,
|
||||
submissionCount: row.submissionCount,
|
||||
acceptedCount: row.acceptedCount,
|
||||
correctRate: rounded((row.acceptedCount / row.submissionCount) * 100),
|
||||
submissionItems: itemsByUser.get(row.username) ?? [],
|
||||
}))
|
||||
const data = acceptedUsers.map((row) => ({
|
||||
username: row.username,
|
||||
className: classNames.get(row.username) ?? null,
|
||||
submissionCount: row.submissionCount,
|
||||
acceptedCount: row.acceptedCount,
|
||||
solvedCount: row.solvedCount,
|
||||
astOnlyCount: astOnlyByUserMap.get(row.username) ?? 0,
|
||||
judgingCount: row.judgingCount,
|
||||
correctRate: judgedRate(row.acceptedCount, row.submissionCount - row.judgingCount),
|
||||
submissionItems: itemsByUser.get(row.username) ?? [],
|
||||
}))
|
||||
|
||||
const dataUnaccepted = rosterRows
|
||||
.filter((row) => !submittedUsernames.has(row.username))
|
||||
@@ -316,25 +498,42 @@ submissionRoutes.get("/submissions/statistics", requireTeacher, async (c) => {
|
||||
realName: stripClassPrefix(row.username, row.className),
|
||||
}))
|
||||
|
||||
// 顺序照搬旧后端:先用原始 person_count 算完成度,再修正 person_count。
|
||||
// 修正是为了兜住「学生已删号但提交记录还在」——那时完成人数会大于花名册人数。
|
||||
// 交了但一次没对的。**按花名册取**,和 dataUnaccepted 同一个范围 ——
|
||||
// 不指定用户名时没有花名册,这一栏也就跟着为空,不会冒出一堆别的班的人。
|
||||
const rosterNames = new Map(rosterRows.map((row) => [row.username, row.className]))
|
||||
// 交了但没做完的:包括一道都没对的,也包括三道里做出两道的
|
||||
const attemptedRows = perUser.filter(
|
||||
(row) => !isDone(row) && rosterNames.has(row.username),
|
||||
)
|
||||
const failureByUser = await lastFailureByUser(
|
||||
where,
|
||||
attemptedRows.map((row) => row.username),
|
||||
)
|
||||
const dataAttempted = attemptedRows.map((row) => ({
|
||||
username: row.username,
|
||||
realName: stripClassPrefix(row.username, rosterNames.get(row.username) ?? null),
|
||||
submissionCount: row.submissionCount,
|
||||
solvedCount: row.solvedCount,
|
||||
lastFailure: failureByUser.get(row.username) ?? null,
|
||||
}))
|
||||
|
||||
// 「学生已删号但提交记录还在」时完成人数会大于花名册人数,分母兜到完成人数为止。
|
||||
// 旧后端在这之前还先算了一个 person_rate 一起下发,前端从来没读过它(完成度是
|
||||
// 前端自己按「减掉请假人数之后的分母」重算的),所以这条链路上只留 person_count。
|
||||
let personCount = rosterRows.length
|
||||
let personRate = 0
|
||||
if (personCount) {
|
||||
personRate = Math.min(100, rounded((data.length / personCount) * 100))
|
||||
if (personCount < data.length) personCount = data.length
|
||||
}
|
||||
if (personCount && personCount < data.length) personCount = data.length
|
||||
|
||||
return success(
|
||||
c,
|
||||
submissionStatisticsSchema.parse({
|
||||
submissionCount,
|
||||
acceptedCount,
|
||||
correctRate: submissionCount ? rounded((acceptedCount / submissionCount) * 100) : 0,
|
||||
judgingCount,
|
||||
correctRate: judgedRate(acceptedCount, judgedCount),
|
||||
personCount,
|
||||
personRate,
|
||||
data,
|
||||
dataUnaccepted,
|
||||
dataAttempted,
|
||||
}),
|
||||
)
|
||||
})
|
||||
|
||||
Reference in New Issue
Block a user