From 1b1679585dc5593820832fb4b1533c614bff1afb Mon Sep 17 00:00:00 2001
From: En <huangmingen@lesingle.com>
Date: Mon, 23 Mar 2026 09:52:48 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E4=BF=AE=E5=A4=8D=E5=AD=A6=E6=A0=A1?=
 =?UTF-8?q?=E7=AB=AF=20DashboardView=20=E8=B0=83=E7=94=A8=20getLessonTrend?=
 =?UTF-8?q?=20=E5=8F=82=E6=95=B0=E9=94=99=E8=AF=AF?=
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问题：前端 API 已改为传入 startDate 和 endDate，但 DashboardView.vue 仍传入数字 7
修复：改为计算 7 天前的日期和今天日期，以 YYYY-MM-DD 格式传递
---
 .../src/views/school/DashboardView.vue                      | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/reading-platform-frontend/src/views/school/DashboardView.vue b/reading-platform-frontend/src/views/school/DashboardView.vue
index 34b6c26..efd9f31 100644
--- a/reading-platform-frontend/src/views/school/DashboardView.vue
+++ b/reading-platform-frontend/src/views/school/DashboardView.vue
@@ -653,11 +653,13 @@ const loadCourseStats = async () => {
   }
 };
 
-// 加载授课趋势数据
+// 加载授课趋势数据（默认最近 7 天）
 const loadTrendData = async () => {
   trendLoading.value = true;
   try {
-    const data = await getLessonTrend(7);
+    const endDate = new Date().toISOString().split('T')[0];
+    const startDate = new Date(Date.now() - 7 * 24 * 60 * 60 * 1000).toISOString().split('T')[0];
+    const data = await getLessonTrend(startDate, endDate);
     lessonTrendData.value = data;
   } catch (error) {
     console.error('Failed to load trend data:', error);