Nullable type generation

Clients Add ServiceStack Reference
1

The docs here state: https://docs.servicestack.net/typescript-add-servicestack-reference#typescript-nullable-properties

That if in c# I have a property like:

public string? Name { get; set; }

Then it will by default output as option in typescript like:

public name?: string;

But it actually outputs like:

public name: string;

Why am I getting different behaviour to docs?

edit:

It seems like if I set MakePropertiesOptional: True then everything becomes nullable but then if I add [ValidateNotNull] if will output that property as not nullable.

This seems to be different to what docs say is default behaviour.

How do I specify what fields I want nullable/non-nullable on return types?

2

The docs don’t show an example of nullable reference types but I’ve fine tuned the behavior to generated better expected results for them. Where in the latest v6.4.1+ on MyGet this C# DTO:

public class Data
{
    public int Value { get; set; }
    public int? OptionalValue { get; set; }
    public string Text { get; set; }
    public string? OptionalText { get; set; }

    [Required]
    public int RequiredValue { get; set; }
    [Required]
    public string RequiredText { get; set; }

    // Override default behavior
    [ApiMember(IsRequired=true)]
    public string? OverrideRequiredText { get; set; }

    [ApiMember(IsOptional=true)]
    public string OverrideOptionalText { get; set; }
}

Will generate the TypeScript DTO:

export class Data
{
    public value: number;
    public optionalValue?: number;
    public text: string;
    public optionalText?: string;
    // @Required()
    public requiredValue: number;

    // @Required()
    public requiredText: string;

    // @ApiMember(IsRequired=true)
    public overrideRequiredText: string;

    // @ApiMember(IsOptional=true)
    public overrideOptionalText?: string;
    //...
}

Which includes a new [ApiMember(IsOptional=true)] to override default behavior and force an optional type.

FYI we expect next ServiceStack v6.5 to be released this week if you prefer to wait for the official release on NuGet.

1 Like
3

Thanks Mythz that’s great!

1 Like