将Automapper v5.0的代码重写为v4.0

时间:2016-08-02 02:15:31

标签: automapper automapper-5

Automapper v4.0非常直接在一个方法中使用,有人可以帮助为v5.0重写这个(特别是Mapper代码):

    public IEnumerable<NotificationDto> GetNewNotifications()
    {
        var userId = User.Identity.GetUserId();
        var notifications = _context.UserNotifications
            .Where(un => un.UserId == userId && !un.IsRead)
            .Select(un => un.Notification)
            .Include(n => n.Gig.Artist)
            .ToList();

        Mapper.CreateMap<ApplicationUser, UserDto>();
        Mapper.CreateMap<Gig, GigDto>();
        Mapper.CreateMap<Notification, NotificationDto>();

        return notifications.Select(Mapper.Map<Notification, NotificationDto>);
    }

更新 似乎EF Core没有预测AutoMapper映射的内容:

return notifications.Select(Mapper.Map<Notification, NotificationDto>);

但是我确实在Postman中得到了以下代码的结果:

        return notifications.Select(n => new NotificationDto()
        {
            DateTime = n.DateTime,
            Gig = new GigDto()
            {
                Artist = new UserDto()
                {
                    Id = n.Gig.Artist.Id,
                    Name = n.Gig.Artist.Name

                },
                DateTime = n.Gig.DateTime,
                Id = n.Gig.Id,
                IsCancelled = n.Gig.IsCancelled,
                Venue = n.Gig.Venue
            },
            OriginalVenue = n.OriginalVenue,
            OriginalDateTime = n.OriginalDateTime,
            Type = n.Type
        });

1 个答案:

答案 0 :(得分:0)

如果您想继续使用静态实例 - 唯一的变化是映射器初始化:

Mapper.Initialize(cfg =>
{
    cfg.CreateMap<ApplicationUser, UserDto>();
    cfg.CreateMap<Gig, GigDto>();
    cfg.CreateMap<Notification, NotificationDto>();
});

此外,您应该每个AppDomain运行此代码一次(例如,在启动时的某个地方),而不是每次调用GetNewNotifications时。