更新课程周期管理页面

src/views/course/userCoursePeriod/index.vue

@@ -372,7 +372,7 @@
               filterable 
               v-model="course.form.videoIds" 
               placeholder="请选择小节" 
-              :multiple-limit="getDiff(course.row.periodStartingTime, course.row.periodEndTime) - course.total" 
+              :multiple-limit="getDiff(periodSettingsData.periodStartingTime, periodSettingsData.periodEndTime) - course.total" 
               multiple 
               clearable 
               size="small" 
@@ -1605,7 +1605,17 @@ export default {
         const allVideoIds = this.videoList.map(video => parseInt(video.dictValue));
         
         // 获取剩余可选择数量
-        const remainingLimit = this.getDiff(this.course.row.periodStartingTime, this.course.row.periodEndTime) - this.course.total;
+        const remainingLimit = this.getDiff(this.periodSettingsData.periodStartingTime, this.periodSettingsData.periodEndTime) - this.course.total;
+        
+        // 调试信息
+        console.log('批量选择调试信息:', {
+          营期开始时间: this.periodSettingsData.periodStartingTime,
+          营期结束时间: this.periodSettingsData.periodEndTime,
+          营期总天数: this.getDiff(this.periodSettingsData.periodStartingTime, this.periodSettingsData.periodEndTime),
+          已有课程数: this.course.total,
+          剩余可选择数量: remainingLimit,
+          可用小节总数: allVideoIds.length
+        });
         
         // 只选择剩余数量内的小节
         const selectedVideoIds = allVideoIds.slice(0, remainingLimit);