update

app/Http/Controllers/Admin/OtherController.php

@@ -233,8 +233,7 @@ class OtherController extends CommonController
         $calendar = Calendar::where(function ($query) use ($start_date, $end_date) {
             $query->whereBetween('start_time', [$start_date, $end_date])
                 ->orWhereBetween('end_time', [$start_date, $end_date]);
-        });
+        })->whereIn('course_id', $courses->pluck('id'));
-        //->whereIn('course_id', $courses->pluck('id'));
         $list['course_total'] = (clone $calendar)->count();
         // 开课天数
         $list['course_day_total'] = (clone $calendar)->sum('days');