CODEWITHSUNDEEP
c#servicestack
Tom
Tom

Reputation: 16246

ServiceStack Response Default Values

[Default] data annotation works with ORMLite. However, it won't work with default values of a response. Is there anything similar to the [Default] attribute that is for response DTO?

Considering the following code: 

[Route("api/hello")]
public class Hello {
    public string Ping { get; set; }
}
public class HelloResponse {
    public ResponseStatus ResponseStatus { get; set; }
    [Default(typeof(string), "(nothing comes back!)")]
    public string Pong { get; set; }
}

I want Response DTO Pong property to have a default value "(nothing comes back!)" instead of just null.

Upvotes: 1

Views: 857

Answers (1)

rossipedia
rossipedia

Reputation: 59377

Just set it in the constructor. DTOs in ServiceStack are plain C# objects. Nothing special. 

public class HelloResponse 
{
    public HelloResponse() 
    {
        this.Pong = "(nothing comes back!)";
    }

    public ResponseStatus ResponseStatus { get; set; }
    public string Pong { get; set; }
}

The constructor for a class will always run before any properties set in an object initializer:

var resp = new HelloResponse();
Console.WriteLine(resp.Pong); // "(nothing comes back!)"

resp = new HelloResponse 
{
    Pong = "Foobar";
};
Console.WriteLine(resp.Pong); // "Foobar"

Upvotes: 6

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