如何使用 .net 核心和 AutoMapper 从 IdentityUser 获取具有角色的用户列表

Question

您好我想使用 .NET 核心和自动映射器（创建映射）获取具有角色的身份用户列表
每个用户只有一个角色，我想返回每个用户角色的列表，我使用自动映射器到 Map
这是我要生成的列表

| Display Name | User Name |        Email       | Role  |   Department   |
|:------------:|:---------:|:------------------:|:-----:|:--------------:|
| Admin        | Admin123  | admin123@gmail.com | Admin | System Defined |

这是查询

public async Task<Result<PagedList<AppUserDto>>> Handle(Query request, CancellationToken cancellationToken)
{

    var query = _context.Users
        .OrderByDescending(d => d.Id).ProjectTo<AppUserDto>(_mapper.ConfigurationProvider)
        .AsQueryable();         

    return Result<PagedList<AppUserDto>>.Success(
        await PagedList<AppUserDto>.CreateAsync(query, request.Params.PageNumber, request.Params.PageSize)
    );
}

public class AppUserDto
{
    public string Id { get; set; }
    public string DisplayName { get; set; }
    public string UserName { get; set; }
    public string Email { get; set; }
    public string DepartmentNameE { get; set; }
    public string RoleId { get; set; }
    public string RoleName { get; set; }
}

映射

CreateMap<AppUser, AppUserDto>()
    .ForMember(d => d.DepartmentNameE, o => o.MapFrom(s => s.FDSDepartments.DepartmentNameE));

AppUser Class

public class AppUser : IdentityUser
{
    public string DisplayName { get; set; }
    public int DepartmentID { get; set; }
    public virtual FDSDepartments FDSDepartments { get; set; }
}

Answer 1

您可以从Role表中获取此数据（如果没有，则必须创建一个角色 class 并从 asp 角色 class 继承，如AppUser ）：

将查询更改为此：

public async Task<Result<PagedList<AppUserDto>>> Handle(Query request, CancellationToken cancellationToken)
            {

                var query = _context.Roles.
                OrderByDescending(d => d.Id).ProjectTo<AppUserDto>(_mapper.ConfigurationProvider)
                .AsQueryable();         

                return Result<PagedList<AppUserDto>>.Success(
                    await PagedList<AppUserDto>.CreateAsync(query, request.Params.PageNumber, request.Params.PageSize)
                );
            }

将 map 配置更改为：

CreateMap<AppUser, AppUserDto>()
            .ForMember(d => d.DepartmentNameE, o => o.MapFrom(s => s. AppUser.FDSDepartments.DepartmentNameE))
            .ForMember(d => d.RoleName, o => o.MapFrom(s => s.Role.Name));
            //populate other properties like above