test

app/Http/Controllers/WeChat/ApiController.php

@@ -458,7 +458,7 @@ class ApiController extends Controller
         if($student_course->assign_teacher == 1) {
             $teachers = Teacher::all();
         } else {
-            $teacher_ids = StudentCourseTeacher::where('student_course_id', $student_course->id)->get()->pluck('teacher_id');
+            $teacher_ids = StudentCourseTeacher::where('student_course_id', $student_course->id)->get()->pluck('teacher_id')->unique();
             dd($teacher_ids, $student_course->id);
             $teachers = Teacher::whereIn('id', $teacher_ids)->get();
         }