course/app/common/service/SubjectHomeworkService.php

<?php

namespace app\common\service;

use app\common\model\SubjectHomework;
use app\common\model\Teacher;
use app\common\model\TeacherScheduleTime;
use app\constant\ResponseCode;
use think\Exception;

class SubjectHomeworkService
{

    /**
     * @desc 发布课程作业
     * @param $request
     * @return array|void
     */
    public function publish($request)
    {
        try {
            if (empty($request->teacher)) {
                throw new Exception('请教师登陆后再设置');
            }
            $teacher = Teacher::where(['id' => $request->teacher->id])->findOrEmpty();

            if ($teacher->isEmpty()) {
                throw new Exception('未找到教师信息，设置失败');
            }
            $data = $request->post();
            $teacher_schedule_time = TeacherScheduleTime::where(['id' => $data['teacher_schedule_time_id']])->findOrEmpty();

            if ($teacher_schedule_time->isEmpty()) {
                throw new Exception('未找到教师课程安排');
            }

            $subject_homework = SubjectHomework::where([
                'teacher_id' => $teacher->id,
                'teacher_schedule_time_id' => $data['teacher_schedule_time_id'],
                'subject_id' => $teacher_schedule_time->subject_id
            ])->findOrEmpty();

            if (!$subject_homework->isEmpty()) {
                throw new Exception('家庭作业已存在，请勿重复提交');
            }

            $res = SubjectHomework::create([
                'teacher_id' => $teacher->id,
                'teacher_schedule_time_id' => $data['teacher_schedule_time_id'],
                'subject_id' => $teacher_schedule_time->subject_id,
                'homework_file_url' => $data['homework_file_url'],
                'homework_file_name' => $data['homework_file_name'],
            ]);

            return [
                'code' => ResponseCode::SUCCESS,
                'msg' => '操作成功'
            ];
        } catch (Exception $e) {
            return [
                'code' => ResponseCode::FAIL,
                'msg' => $e->getMessage()
            ];
        }
    }


    /**
     * @desc 获取课程的家庭作业
     * @param $request
     * @return array
     */
    public function getSubjectHomework($request)
    {
        try {

            $data = $request->get();
            $subject_homework = SubjectHomework::where(['teacher_schedule_time_id' => $data['teacher_schedule_time_id'], 'is_publish' => 1])
                ->with(['teacher', 'subject'])
                ->findOrEmpty();

            return [
                'code' => ResponseCode::SUCCESS,
                'data' => $subject_homework,
                'msg' => 'success'
            ];
        } catch (Exception $e) {
            return [
                'code' => ResponseCode::FAIL,
                'msg' => $e->getMessage()
            ];
        }
    }

}