public void DeleteCourse(long courseId)
{
// 校验参数
Course course = new CourseBll(new HengNuoWangDBContext()).GetCourse(courseId);
if (course == null)
{
string.Format("不存在指定courseId：{0}的课程", courseId).ThrowException();
}
// 删除课程
int row = _dal.DeleteCourse(course.Id);
// 判断返回值
if (row <= 0)
{
string.Format("删除课程courseId：{0}失败", course.Id).ThrowException();
}
if (row > 1)
{
string.Format("删除{0}个相同课程courseId：{1}", row, course.Id).ThrowException();
}
}
public JsonResult Edit(long id)
{
// 检查请求
Course oldCourse = new CourseBll(new HengNuoWangDBContext()).GetCourse(id);
if (oldCourse == null)
{
return JsonHelper.GetJsonResult(_ERROR, "课程不存在");
}
string courseName = Request["name"];
short coursePrice;
if (CommonHelper.IsNullOrEmptyOrWhiteSpace(courseName) ||
courseName.Length > 50 ||
!short.TryParse(Request["price"], out coursePrice) ||
coursePrice < 0)
{
return JsonHelper.GetJsonResult(_ERROR, "课程名 或 价格 错误");
}
// 更新
Course newCourse = new Course()
{
Id = oldCourse.Id,
Name = courseName,
Price = coursePrice,
};
if (oldCourse.Name == newCourse.Name && oldCourse.Price == newCourse.Price)
{
return JsonHelper.GetJsonResult(_ERROR, "课程名或价格至少修改一个");
}
_courseBll.UpdateCourse(newCourse);
// 记录日志
string log = string.Format("修改课程{4}：名称【{0}=>{1}】;价格【{2}=>{3}】",
oldCourse.Name, newCourse.Name, oldCourse.Price, newCourse.Price, newCourse.Id);
AdminOperationLogBll.AddAdminOperationLog(AdminUserId, log);
return JsonHelper.GetJsonResult(_OK, "更新成功", "/Course/List");
}
public void UpdateCourse(Course course)
{
// 检查参数
if (course == null)
{
throw new ArgumentNullException("course");
}
Course crs = new CourseBll(new HengNuoWangDBContext()).GetCourse(course.Id);
if (crs == null)
{
string.Format("不存在指定courseId：{0}的课程", course.Id).ThrowException();
}
// 更新课程
int row = _dal.UpdateCourse(course);
// 判断返回值
if (row <= 0)
{
string.Format("更新课程：{0}失败", course.Name).ThrowException();
}
if (row > 1)
{
string.Format("更新{0}个相同课程：{1}", row, course.Name).ThrowException();
}
}
