update

app/Models/CourseSign.php

@@ -89,8 +89,8 @@ class CourseSign extends SoftDeletesModel
             }
         })->whereHas('course', function ($query) use ($start_date, $end_date) {
             // 开始结束日期的筛选。or查询
-//            $query->whereBetween('start_date', [$start_date, $end_date])
+            $query->whereBetween('start_date', [$start_date, $end_date])
-//                ->whereBetween('end_date', [$start_date, $end_date]);
+                ->orWhereBetween('end_date', [$start_date, $end_date]);
         })->whereHas('user', function ($query) use ($area) {
             if (isset($area)) {
                 if ($area == '苏州市外') {