.NET 9 OpenAPI: How to rename the schemas?

[petercinibulk]

I have classes that are named like FooDto and BarDto. I want to be able to remove the Dto in the result OpenAPI spec.

I was looking into AddSchemaTransformer but I can't figure out how to change the schema name.

Thanks!

[petercinibulk]

Ended up coming up with this solution:

[DisplayName("UserProfile")]
public class UserProfileDto
{
    ...
}

public class OpenApiModifier
{
    public static string? DisplayNameOrDefaultSchemaRefId(JsonTypeInfo jsonTypeInfo)
    {
        var displayName = jsonTypeInfo.Type.GetCustomAttributes<DisplayNameAttribute>().SingleOrDefault()?.DisplayName;
        if (displayName != null)
        {
            return displayName;
        }
        return OpenApiOptions.CreateDefaultSchemaReferenceId(jsonTypeInfo);
    }
}

builder.Services.AddOpenApi(options =>
{
    options.CreateSchemaReferenceId = OpenApiModifier.DisplayNameOrDefaultSchemaRefId;
});