尝试跟WTM系列视频教程的数据权限, 但不成功, , Patient List VM没有加入数据权限

WTM系列视频教程 - 权限和认证（二）
https://edu.csdn.net/course/play/27568/384524?spm=1002.2009.3001.4024

1. 下载了 ERCS(第五讲).rar
2. 修改了 Program.cs, 加入dataPrivilegeSettings語句

public static IHostBuilder CreateWebHostBuilder(string[] args)
{

    return
        Host.CreateDefaultBuilder(args)
         .ConfigureWebHostDefaults(webBuilder =>
         {
             webBuilder.ConfigureServices(x =>
            {
                //1. define Data Privileges
                var pris = new List<IDataPrivilege>
                {
                    new DataPrivilegeInfo<City>("地點", y => y.Name),
                };
                x.AddFrameworkService(dataPrivilegeSettings: pris);

1. 测试了, 下拉菜单中真的看不到城市地点
2. 修改了 PatientListVM.cs 中的GetSearchQuery(), 加入DPWhere語句

public override IOrderedQueryable<Patient_View> GetSearchQuery()
{
    var query = DC.Set<Patient>()
        .CheckContain(Searcher.PatientName, x=>x.PatientName)
        .CheckContain(Searcher.IdNumber, x=>x.IdNumber)
        .CheckEqual(Searcher.Gender, x=>x.Gender)
        .CheckEqual(Searcher.Status, x=>x.Status)
        .CheckWhere(Searcher.SelectedVirusesIDs,x=>DC.Set<PatientVirus>().Where(y=>Searcher.SelectedVirusesIDs.Contains(y.VirusId)).Select(z=>z.PatientId).Contains(x.ID))
        .DPWhere(LoginUserInfo.DataPrivileges, x => x.LocationId)
        .Select(x => new Patient_View
        {
            ID = x.ID,
            PatientName = x.PatientName,
            IdNumber = x.IdNumber,
            Gender = x.Gender,
            Status = x.Status,
            Birthday = x.Birthday,
            Name_view = x.Location.Name,
            Name_view2 = x.Hospital.Name,
            PhotoId = x.PhotoId,
            VirusName_view = x.Viruses.Select(y=>y.Virus.VirusName).ToSpratedString(null,","), 
        })
        .OrderBy(x => x.ID);
    return query;
}

1. 测试时没有作用...
2. 设定了数据权限后, 仍没有作用, 所有记录也显示出来了.

不知道少了什么, 烦请大家指导一下...谢谢

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