update

app/Models/CourseSign.php

@@ -179,12 +179,13 @@ class CourseSign extends SoftDeletesModel
     public static function yhInvestedTotal($start_date = null, $end_date = null, $course_ids, $retList = false)
     {
         // 默认时间：获取所有学员，不限制课程
-        $userIds = self::getStudentList(null, $end_date, 1, null)->get()->pluck('user_id');
+        $userIds = self::getStudentList($start_date, $end_date, 1, null)->get()->pluck('user_id');
 
         // 获取这些学员所在的被投企业
         $companies = Company::whereHas('users', function ($query) use ($userIds) {
             $query->whereIn('id', $userIds);
         })->where('is_yh_invested', 1)->get();
+        dd($companies);
         // 自定义时间：需要按被投时间筛选
         // 筛选出被投时间在范围内的企业
         $filteredCompanies = [];