Nice!

I'll update as soon as it is out

@qwert_ukg uploaded a file: it is right way to update entity with relation (rest api)?

@dmnk_89 commented on @qwert_ukg’s file https://kotlinlang.slack.com/files/U2FRKFGV9/F7DRFG9S4/it_is_right_way_to_update_entity_with_relation__rest_api__.kt:

findOne(id)

can return null. besides that it's more or less how I use it. Other option is to check if entity with id exists and just do update (without geting whole object). but it usualy is not worth it

@lex uploaded a file: Untitled

@qwert_ukg try this

Sharing illustration of Kotlin & Spring using a Groovy-based test framework (Spock)! https://jeff-banks.blogspot.com/2017/09/programming-foundations-lotto-session-3.html

Is there a sample application using the new

router

dsl?

Thank you

courtesy of sdeleuze

the tweet sdeleuze posted just above is an even simpler example of that dsl

is it possible to add swagger to the new routes dsl??

Hmmm, in this handler, he is calling

json()

on

ok()

, but

json

is not popping up for me

And the

ServerResponse.BodyBuilder

doesn’t seem to have a

json

function either https://docs.spring.io/spring/docs/5.0.0.M3/javadoc-api/org/springframework/web/reactive/function/ServerResponse.BodyBuilder.html

set the channel topic: https://docs.spring.io/spring/docs/current/spring-framework-reference/kotlin.html

@roberto.guerra First thing, now that Spring Framework 5.0 (and Boot 2 M5) has been release please check against 5.0.0 so https://docs.spring.io/spring/docs/current/javadoc-api/. Also please have a look to the Spring Kotlin documentation (https://docs.spring.io/spring/docs/current/spring-framework-reference/kotlin.html) which provide some extensions which are documented. In that case

json()

is a project specific extension, see https://github.com/mixitconf/mixit/blob/master/src/main/kotlin/mixit/util/Extensions.kt#L38

It is not provided in Spring Framework for now, but feel free to add that to your project if you like it

@snowe For Swagger good question, I am not sure. We are working on similar questions for Spring Boot 2 mapping actuator support, I will ask to Arjen Poutsma which created the Java orginal version.

@snowe @sdeleuze I think it is not a problem to implement it, spray has swagger support and spring webflux api on kotlin looks like it

there is a ticket on springfox issues for it https://github.com/springfox/springfox/issues/1809

If I am not mistaken, this issue concerns only the annotation programming model.

Which is easy to support since we are using the same annotations than Spring MVC

For the functional API, routing is different so I don't think it is supported yet

@sdeleuze Do you know if we have any initiative on adding support to Kotlin on spring data? e.g. instead we have Optional<Entity> to something like Entity?

Swagger support should be doable via https://jira.spring.io/browse/SPR-15711

@tiare.balbi Spring Data fully supports Kotlin (see https://docs.spring.io/spring-data/jpa/docs/current-SNAPSHOT/reference/html/#repositories.nullability) but indeed Spring Data Kay

CrudRepository#findById

now returns

Optional<T>

because that's best practice in Java 8. If you prefer a more idiomatic

T?

return type you can probably directly extends

Repository

and specify your own

fun findById(): T?

or continue to extends

CrudRepository

and add a

fun findByXxx(): T?

function, like

fun findByUsername(): T?

or

fun findByNulllableId(): T?

Could you double check and confirm me it works as expected ?