update

app/Models/User.php

@@ -195,13 +195,13 @@ class User extends Authenticatable implements Auditable
         if (empty($courseSigns)) {
             return false;
         }
-        if (empty($courseSigns->course->start_time)) {
+        if (empty($courseSigns->course->start_date)) {
             return false;
         }
         // 编号前缀
-        $prifix = date('Ymd', strtotime($courseSigns->course->start_time));
+        $prefix = date('Ymd', strtotime($courseSigns->course->start_date));
         // 获取同一天开始的所有课程
-        $course = Course::where('start_time', $courseSigns->course->start_time)->orderBy('created_at', 'asc')->get();
+        $course = Course::where('start_date', $courseSigns->course->start_date)->orderBy('created_at', 'asc')->get();
         // 获取同一天开始所有课程的报名信息
         $courseSigns = CourseSign::whereIn('id', function ($query) use ($course) {
             $query->from('course_signs')
@@ -216,7 +216,7 @@ class User extends Authenticatable implements Auditable
         $index = $courseSigns->search(function ($item) use ($user) {
             return $item->user_id == $user->id;
         });
-        $no = $prifix . str_pad($index, 3, '0', STR_PAD_LEFT);
+        $no = $prefix . str_pad($index, 3, '0', STR_PAD_LEFT);
         $user->no = $no;
         $user->save();
         return $user->no;