Optional Boolean attributes with defaults don't distinguish between unset and false about goa HOT 4 CLOSED

// This file contains descriptions of services and their methods.
// The methods should be implemented in, e.g. /example/api/service.go.
// Goa will roll up these descriptions and generate the corresponding endpoints.
package design

import (
	. "goa.design/goa/v3/dsl"
	cors "goa.design/plugins/v3/cors/dsl"
)

var _ = API("my-service", func() {
	Title("my-service")
	Description("Services related ")
	Server("my-service", func() {
		Host("localhost", func() {
			URI("http://localhost:8000")
		})
	})
})

var DeduplicateSpecification = Type("DeduplicateSpecification", func() {
	Attribute("matching_names", Boolean, func() {
		Description("de-duplicate when names match")
		Default(true)
	})
})

// Service describes a service
var _ = Service("my-service", func() {
	cors.Origin("*", func() {
		cors.Headers("*")
		cors.Methods("GET", "POST", "PUT", "DELETE", "PATCH")
		cors.Credentials()
	})

	Error("not_found")

	Method("create-dispatch", func() {
		Payload(func() {
			Attribute("name", String, "submission name")
			Attribute("deduplicate_by", DeduplicateSpecification, "how to deduplicate the submission")
		})
		Result(func() {
			Attribute("id", Int, "the submission id")
			Required("id")
		})
		HTTP(func() {
			POST("/submit")
			Response(StatusOK)
		})
	})
})

func marshalMyserviceDeduplicateSpecificationToDeduplicateSpecificationRequestBody(v *myservice.DeduplicateSpecification) *DeduplicateSpecificationRequestBody {
	if v == nil {
		return nil
	}
	res := &DeduplicateSpecificationRequestBody{
		MatchingNames: v.MatchingNames,
	}
	{
		var zero bool
		if res.MatchingNames == zero {
			res.MatchingNames = true // this clobbers user-set false values
		}
	}

	return res
}