一、讲师列表

1、TeacherService

接口

public Map<String, Object> pageListWeb(Page<Teacher> pageParam);

实现

@Override
public Map<String, Object> pageListWeb(Page<Teacher> pageParam) {
    QueryWrapper<Teacher> queryWrapper = new QueryWrapper<>();
    queryWrapper.orderByAsc("sort");
    baseMapper.selectPage(pageParam, queryWrapper);
    List<Teacher> records = pageParam.getRecords();
    long current = pageParam.getCurrent();
    long pages = pageParam.getPages();
    long size = pageParam.getSize();
    long total = pageParam.getTotal();
    boolean hasNext = pageParam.hasNext();
    boolean hasPrevious = pageParam.hasPrevious();
    Map<String, Object> map = new HashMap<String, Object>();
    map.put("items", records);
    map.put("current", current);
    map.put("pages", pages);
    map.put("size", size);
    map.put("total", total);
    map.put("hasNext", hasNext);
    map.put("hasPrevious", hasPrevious);
    return map;
}

2、TeacherController

@ApiOperation(value = "分页讲师列表")
@GetMapping(value = "{page}/{limit}")
public R pageList(
    @ApiParam(name = "page", value = "当前页码", required = true)
    @PathVariable Long page,
    @ApiParam(name = "limit", value = "每页记录数", required = true)
    @PathVariable Long limit){
    Page<Teacher> pageParam = new Page<Teacher>(page, limit);
    Map<String, Object> map = teacherService.pageListWeb(pageParam);
    return  R.ok().data(map);
}

二、讲师详情

1、CourseService

根据讲师id查询讲师所讲课程列表
接口

List<Course> selectByTeacherId(String teacherId);

实现

/**
     * 根据讲师id查询当前讲师的课程列表
     * @param teacherId
     * @return
     */
@Override
public List<Course> selectByTeacherId(String teacherId) {
    QueryWrapper<Course> queryWrapper = new QueryWrapper<Course>();
    queryWrapper.eq("teacher_id", teacherId);
    //按照最后更新时间倒序排列
    queryWrapper.orderByDesc("gmt_modified");
    List<Course> courses = baseMapper.selectList(queryWrapper);
    return courses;
}

2、TeacherController

@Autowired
private CourseService courseService;

修改getById方法：

@ApiOperation(value = "根据ID查询讲师")
@GetMapping(value = "{id}")
public R getById(
        @ApiParam(name = "id", value = "讲师ID", required = true)
        @PathVariable String id){
    //查询讲师信息
    Teacher teacher = teacherService.getById(id);
    //根据讲师id查询这个讲师的课程列表
    List<Course> courseList = courseService.selectByTeacherId(id);
    return R.ok().data("teacher", teacher).data("courseList", courseList);
}