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自动映射多对多映射混淆

automapper c#

0

Mehmet Ince · 技术社区 · 9 年前

到目前为止,我所做的是,

映射配置 :

CreateMap<Notification, NotificationViewModel>();
CreateMap<User, UserViewModel>().ForMember(dest => dest.Notifications, map => map.MapFrom(src => src.UserNotification.Select(x => x.Notification)));

类别:

public class Notification : IEntityBase
{
    public Notification()
    {
        this.UserNotification = new HashSet<UserNotification>();
    }

    public int Id { get; set; }
    public string Header { get; set; }
    public string Content { get; set; }
    public System.DateTime CreateTime { get; set; }
    public bool Status { get; set; }

    public virtual ICollection<UserNotification> UserNotification { get; set; }
}

public class User : IEntityBase
{
    public User()
    {
        this.UserNotification = new HashSet<UserNotification>();
    }

    public int Id { get; set; }
    public string Name { get; set; }
    public string Surname { get; set; }
    public string Email { get; set; }
    public string PhoneNumber { get; set; }
    public bool Status { get; set; }

    public virtual ICollection<UserNotification> UserNotification { get; set; }
}

用户通知

public class UserNotification : IEntityBase
{
    public int Id { get; set; }
    public int UserId { get; set; }
    public int NotificationId { get; set; }
    public bool HasRead { get; set; }

    public virtual Notification Notification { get; set; }
    public virtual User User { get; set; }
}

班

public class UserViewModel : IValidatableObject
{
    public int Id { get; set; }
    public string Name { get; set; }
    public string Surname { get; set; }
    public string Email { get; set; }
    public string PhoneNumber { get; set; }
    public bool Status { get; set; }

    public IList<NotificationViewModel> Notifications { get; set; }
}

班

public class NotificationViewModel
{
    public int Id { get; set; }
    public string Header { get; set; }
    public string Content { get; set; }
    public System.DateTime CreateTime { get; set; }
    public bool Status { get; set; }
    public bool HasRead { get; set; } // this is the difference
}

1 回复 | 直到 9 年前

1

2

grek40 9 年前

为了修复 HasRead ,也许你可以利用 AfterMap(Action<TSource, TDestination> afterFunction)

CreateMap<User, UserViewModel>()
    .ForMember(dest => dest.Notifications, map => map.MapFrom(src => src.UserNotification.Select(x => x.Notification)))
    .AfterMap((src, dest) =>
    {
        foreach (var notificationVM in dest.Notifications)
        {
            notificationVM.HasRead = src.UserNotification.Where(x => x.NotificationId == notificationVM.Id).Select(x => x.HasRead).FirstOrDefault();
        }
    });