MapWith

In some cases where AutoMapper fails to auto-map nested models, call mapWith() to take over this operation for the configured property.

mapWith() accepts 3 arguments:

• withDestination: the NestedDestination model to map to
• withSource: the NestedSource model to map from
• withSourceValue: the ValueSelector to select a property from the parent sourceObject whose value is the NestedSource

createMap(
    mapper,
    User,
    UserDto,
    forMember(
        (destination) => destination.profile,
        mapWith(ProfileDto, Profile, (source) => source.profile)
    )
);

tip

In the case where the property on Destination has a different name than Source (e.g: Source.originalProfile vs Destination.otherProfile), we can use mapWith() as well. Although it is possible and valid, we should avoid this case because it is against the Convention

info

mapWith() calls the normal map operation for NestedSource and NestedDestination. In other words, it is the same as we call `mapper.map(nestedSourceObject, NestedSource, NestedDestination) ourselves.

mapWith() sets the TransformationType to TransformationType.MapWith