public async Task Add(TeacherCourseInput input)
{
//检查Id参数
if (!input.CourseId.HasValue)
{
throw new UserFriendlyException("传入CourseId参数不正确！");
}
if (!input.TeacherId.HasValue)
{
throw new UserFriendlyException("传入TeacherId参数不正确！");
}
//验证
var course = await _teacherCourseRepository.FirstOrDefaultAsync(x => x.Id == input.CourseId);
if (course == null)
{
throw new UserFriendlyException($"编号为{input.CourseId}的课程不存在！");
}
//创建教师课程对象
var teacherCourse = new Education.TeacherCourse
{
CourseId = input.CourseId.Value,
TeacherId = input.TeacherId.Value
};
await _teacherCourseRepository.InsertAsync(teacherCourse);
}
public async Task Edit(TeacherCourseInput input)
{
//检查Id参数
if (!input.Id.HasValue)
{
throw new UserFriendlyException("传入Id参数不正确！");
}
//验证
var course = await _teacherCourseRepository.FirstOrDefaultAsync(x => x.Id == input.CourseId);
if (course == null)
{
throw new UserFriendlyException($"编号为{input.CourseId}的课程不存在！");
}
//获取需要修改的对象
var teacherCourse = await _teacherCourseRepository.FirstOrDefaultAsync(x => x.Id == input.Id.Value);
if (teacherCourse == null)
{
throw new UserFriendlyException("当前课程不存在！");
}
//修改属性值
if (input.CourseId.HasValue)
{
teacherCourse.CourseId = input.CourseId.Value;
}
if (input.TeacherId.HasValue)
{
teacherCourse.TeacherId = input.TeacherId.Value;
}
//执行修改数据方法
await _teacherCourseRepository.UpdateAsync(teacherCourse);
}
