/// <summary>
/// 用户解绑.学生解绑账号
/// @author dwy
/// </summary>
/// <param name="userId">用户id</param>
/// <returns>true 解绑成功 false 解绑失败</returns>
/// <seealso cref="M:Xmu.Crms.Shared.Service.IClassService.DeleteCourseSelectionById(System.Int64,System.Int64)"/>
/// <exception cref="T:System.ArgumentException">id格式错误</exception>
/// <exception cref="T:Xmu.Crms.Shared.Exceptions.UserNotFoundException">未找到对应用户</exception>
public void DeleteStudentAccount(long userId)
{
if (userId < 0)
{
throw new ArgumentException("userId格式错误");
}
var user = _db.UserInfo.Find(userId) ??
throw new UserNotFoundException();
IList <ClassInfo> courses = _classService.ListClassByUserId(userId); //根据学生ID获取班级列表
IList <SeminarGroup> groups = _seminarGroupService.ListSeminarGroupIdByStudentId(userId); //获取学生的所有讨论课小组
foreach (SeminarGroup s in groups)
{
if (userId == _seminarGroupService.GetSeminarGroupLeaderByGroupId(s.Id)) //如果是组长
{
_seminarGroupService.ResignLeaderById(s.Id, userId); //组长辞职
}
_seminarGroupService.DeleteSeminarGroupMemberById(s.Id, userId); //在小组中删除该成员
}
foreach (ClassInfo c in courses)
{
FixGroup fixGroup = _fixGroupService.GetFixedGroupById(userId, c.Id); //找到学生所在的固定小组
_fixGroupService.DeleteFixGroupUserById(fixGroup.Id, userId); //将学生从固定小组中删去
_classService.DeleteCourseSelectionById(userId, c.Id); //学生按班级ID取消选择班级
}
_db.RemoveRange(_db.UserInfo.Where(u => u.Id == userId));//删除学生账号
_db.SaveChanges();
}
/// <summary>
/// 用户解绑.学生解绑账号
/// @author dwy
/// </summary>
/// <param name="userId">用户id</param>
/// <returns>true 解绑成功 false 解绑失败</returns>
/// <seealso cref="M:Xmu.Crms.Shared.Service.IClassService.DeleteCourseSelectionById(System.Int64,System.Int64)"/>
/// <exception cref="T:System.ArgumentException">id格式错误</exception>
/// <exception cref="T:Xmu.Crms.Shared.Exceptions.UserNotFoundException">未找到对应用户</exception>
public void DeleteStudentAccount(long userId)
{
if (userId < 0)
{
throw new ArgumentException("userId格式错误");
}
var user = _db.UserInfo.Find(userId) ??
throw new UserNotFoundException();
IList <ClassInfo> courses = _classService.ListClassByUserId(userId);//根据学生ID获取班级列表
foreach (ClassInfo c in courses)
{
FixGroup fixGroup = _fixGroupService.GetFixedGroupById(userId, c.Id); //找到学生所在的固定小组
_fixGroupService.DeleteFixGroupUserById(fixGroup.Id, userId); //将学生从固定小组中删去
_classService.DeleteCourseSelectionById(userId, c.Id); //学生按班级ID取消选择班级
}
_db.RemoveRange(_db.UserInfo.Where(u => u.Id == userId)); //删除学生账号
_db.SaveChanges();
}
public void DeleteTopicBySeminarId(long seminarId)
{
_db.RemoveRange(ListTopicBySeminarId(seminarId));
_db.SaveChanges();
}