ASP.NET MVC 和 AutoMapper(从父域对象和子域对象填充 View 模型)

Question

我有以下域对象:

public class ComponentType
{
    public int ComponentTypeID { get; set; }
    public string Component_Type { get; set; }
    public string ComponentDesc { get; set; }
}

public class AffiliateComponentType
{
    public int AffiliateComponentID { get; set; }
    public int AffiliateID { get; set; }
    public ComponentType ComponentType { get; set; }
    public bool MandatoryComponent { get; set; }
    public bool CanBeBookedStandalone { get; set; }
    public int PreferenceOrder { get; set; }
}

我将使用 NHibernate 从数据库获取 AffiliateComponentType 的列表。现在，我必须从 AffiliateComponentType 域对象的列表中填充 AffiliateComponentTypeView( View 模型)的列表。如何使用 AutoMapper 实现此目的？

[Serializable]
public class AffiliateComponentTypeView
{
    public int ComponentTypeID { get; set; }
    public string Component_Type { get; set; }
    public string ComponentDesc { get; set; }
    public bool MandatoryComponent { get; set; }
    public bool CanBeBookedStandalone { get; set; }
    public int PreferenceOrder { get; set; }
}

Answer 1

以下映射应该完成 flattening your model 的工作:

Mapper
    .CreateMap<AffiliateComponentType, AffiliateComponentTypeView>()
    .ForMember(
        dest => dest.ComponentTypeID,
        opt => opt.MapFrom(src => src.ComponentType.ComponentTypeID)
    )
    .ForMember(
        dest => dest.Component_Type,
        opt => opt.MapFrom(src => src.ComponentType.Component_Type)
    )
    .ForMember(
        dest => dest.ComponentDesc,
        opt => opt.MapFrom(src => src.ComponentType.ComponentDesc)
    );

如果您像这样修改了 View 模型:

[Serializable]
public class AffiliateComponentTypeView
{
    public int ComponentTypeComponentTypeID { get; set; }
    public string ComponentTypeComponent_Type { get; set; }
    public string ComponentTypeComponentDesc { get; set; }
    public bool MandatoryComponent { get; set; }
    public bool CanBeBookedStandalone { get; set; }
    public int PreferenceOrder { get; set; }
}

AutoMapper 将使用标准约定自动执行展平，因此您所需要的只是:

Mapper.CreateMap<AffiliateComponentType, AffiliateComponentTypeView>();

Component_Type 属性会出现一个小问题，因为它与 AutoMapper 的默认命名约定冲突，因此您可能需要重命名它。

定义映射后，您可以映射:

IEnumerable<AffiliateComponentType> source = ...
IEnumerable<AffiliateComponentTypeView> dest = Mapper.Map<IEnumerable<AffiliateComponentType>, IEnumerable<AffiliateComponentTypeView>>(source);