update

app/Http/Controllers/Admin/OtherController.php

@@ -449,12 +449,23 @@ class OtherController extends CommonController
         switch ($export_type) {
             case 'course_signs_invested':
                 // 被投企业明细 - 使用与coursesHome相同的算法
-                $companies = CourseSign::yhInvestedTotal(CourseType::START_DATE, $end_date, $course_ids, true);
+                // 确保 $course_ids 是数组格式
+                $courseIdsArray = $course_ids ? (is_array($course_ids) ? $course_ids : $course_ids->toArray()) : null;
+                $companies = CourseSign::yhInvestedTotal(CourseType::START_DATE, $end_date, $courseIdsArray, true);
                 foreach ($companies as $company) {
                     // 获取该公司的学员信息
                     // 使用与yhInvestedTotal相同的筛选逻辑：status=1，筛选course_ids和日期范围
-                    $userIds = $company->users()->pluck('id');
-                    $userCourseSigns = CourseSign::getStudentList(CourseType::START_DATE, $end_date, 1, $course_ids)
+                    // 直接通过公司ID查询学员
+                    $userIds = User::where('company_id', $company->id)->pluck('id')->toArray();
+
+                    if (empty($userIds)) {
+                        // 如果没有学员，设置空值
+                        $userNamesStr = '';
+                        $courseNamesStr = '';
+                        $courseTypesStr = '';
+                        $totalCourseCount = 0;
+                    } else {
+                        $userCourseSigns = CourseSign::getStudentList(CourseType::START_DATE, $end_date, 1, $courseIdsArray)
                             ->whereIn('user_id', $userIds)
                             ->with(['user', 'course.typeDetail'])
                             ->get();
@@ -462,6 +473,9 @@ class OtherController extends CommonController
                         // 按学员分组
                         $usersData = [];
                         foreach ($userCourseSigns as $sign) {
+                            if (!$sign->user) {
+                                continue;
+                            }
                             $userId = $sign->user_id;
                             if (!isset($usersData[$userId])) {
                                 $usersData[$userId] = [
@@ -506,6 +520,7 @@ class OtherController extends CommonController
                         $userNamesStr = implode('、', array_filter(array_unique($userNames)));
                         $courseNamesStr = implode('、', array_filter(array_unique($allCourseNames)));
                         $courseTypesStr = implode('、', array_filter(array_unique($allCourseTypes)));
+                    }
 
                     $data[] = [
                         'company_name' => $company->company_name,