public async Task <TeacherCourseDto> Get(TeacherCourseQueryInput input)
{
//检查传入参数
if (!input.Id.HasValue)
{
throw new UserFriendlyException("传入Id参数不正确！");
}
var result = await _teacherCourseRepository.FirstOrDefaultAsync(x => x.Id == input.Id.Value);
if (result == null)
{
throw new UserFriendlyException("该条信息不存在！");
}
return(result.MapTo <TeacherCourseDto>());
}
public async Task <PagedResultDto <TeacherCourseDto> > Query(TeacherCourseQueryInput input)
{
//验证参数
if (!input.PageSize.HasValue)
{
throw new UserFriendlyException("传入PageSize参数不正确！");
}
if (!input.Start.HasValue)
{
throw new UserFriendlyException("传入Start参数不正确！");
}
//获取查询对象
var query = _teacherCourseRepository.GetAll();
//添加关键词条件
if (!string.IsNullOrEmpty(input.KeyWord))
{
query = query.Where(x =>
x.Course.Name.Contains(input.KeyWord)
);
}
//添加所属项目条件
if (input.TeacherId.HasValue)
{
query = query.Where(x => x.TeacherId == input.TeacherId.Value);
}
//获取总数
var totalcount = await Task.FromResult(query.Count());
//添加分页条件
if (input.PageSize.Value > 0)
{
query = query.OrderBy(x => x.CreationTime)
.Skip(input.Start.Value).Take(input.PageSize.Value);
}
//执行查询
var courses = await Task.FromResult(query.ToList());
//包装为分页输出对象
return(new PagedResultOutput <TeacherCourseDto>(totalcount, courses.MapTo <List <TeacherCourseDto> >()));
}
