How to omit Get only properties in servicestack js

问题:

I have an object which I am de-serializing using ToJson<>() method from ServiceStack.Text namespace.

How to omit all the GET only propeties during serialization? Is there any attribute like [Ignore] or something that I can decorate my properties with, so that they can be omitted?

Thanks

回答1:

ServiceStack's Text serializers follows .NET's DataContract serializer behavior, which means you can ignore data members by using the opt-out [IgnoreDataMember] attribute

public class Poco 
{
    public int Id { get; set; }

    public string Name { get; set; }

    [IgnoreDataMember]
    public string IsIgnored { get; set; }
}

An opt-in alternative is to decorate every property you want serialized with [DataMember]. The remaining properties aren't serialized, e.g:

[DataContract]
public class Poco 
{
    [DataMember]
    public int Id { get; set; }

    [DataMember]
    public string Name { get; set; }

    public string IsIgnored { get; set; }
}

Finally there's also a non-intrusive option that doesn't require attributes, e.g:

JsConfig<Poco>.ExcludePropertyNames = new [] { "IsIgnored" };

Dynamically specifying properties that should be serialized

ServiceStack's Serializers also supports dynamically controlling serialization by providing conventionally named ShouldSerialize({PropertyName}) methods to indicate whether a property should be serialized or not, e.g:

public class Poco 
{
    public int Id { get; set; }

    public string Name { get; set; }

    public string IsIgnored { get; set; }

    public bool? ShouldSerialize(string fieldName)
    {
        return fieldName == "IsIgnored";
    }
}

More examples in ConditionalSerializationTests.cs

回答2:

For nullable members, you also have the ability to set it to null before serializing.

This is particularly useful if you want to create a single view/api model that is re-used for several API calls. The service can touch it up before setting it on the response object.

Example:

    public SignInPostResponse Post(SignInPost request)
    {
        UserAuthentication auth = _userService.SignIn(request.Domain, true, request.Username, request.Password);

        // Map domain model ojbect to API model object. These classes are used with several API calls.
        var webAuth = Map<WebUserAuthentication>(auth);

        // Exmaple: Clear a property that I don't want to return for this API call... for whatever reason.
        webAuth.AuthenticationType = null;

        var response = new SignInPostResponse { Results = webAuth };
        return response;
    }

I do wish there was a way to dynamically control the serialization of all members (including non-nullable) on a per endpoint fashion.