示例#1
0
// WriteResponseObject writes the status code and response object to the HttpResponseWriter in
// the specified context, in the format best suited based on the request.
//
// Goweb uses the WebCodecService to decide which codec to use when responding
// see http://godoc.org/github.com/stretchrcom/codecs/services#WebCodecService for more information.
//
// This method should be used when the Goweb Standard Response Object does not satisfy the needs of
// the API, but other Respond* methods are recommended.
func (a *GowebAPIResponder) WriteResponseObject(ctx context.Context, status int, responseObject interface{}) error {

	service := a.GetCodecService()

	acceptHeader := ctx.HttpRequest().Header.Get("Accept")
	extension := ctx.FileExtension()
	hasCallback := len(ctx.QueryValue("callback")) > 0

	codec, codecError := service.GetCodecForResponding(acceptHeader, extension, hasCallback)

	if codecError != nil {
		return codecError
	}

	var options map[string]interface{}

	// do we need to add some options?
	if hasCallback {
		options = map[string]interface{}{constants.OptionKeyClientCallback: ctx.QueryValue("callback")}
	}

	output, marshalErr := codec.Marshal(responseObject, options)

	if marshalErr != nil {
		return marshalErr
	}

	// use the HTTP responder to respond
	ctx.HttpResponseWriter().Header().Set("Content-Type", codec.ContentType()) // TODO: test me
	a.httpResponder.With(ctx, status, output)

	return nil

}