hey guys. i have a project with both backend and frontend module. both in kotlin - the backend with ktor, the frontend plain JS/JQuery, but im struggling with deploying both apps to for example heroku. does someone have experience with this / can help me out?

i know how to use ktor but i wanted to try Kara

so in ktor you have

embeddedServer(Netty, 8080)

or something where you can "push" your ktor project to

localhost:8080

ive actually never done it, ive been using .css file for styling

@orangy Quick question, why use strings and not enums:

margin.left("auto")

? I could certainly use the autocompletion.

So far I've only found bits and pieces on how to make GraphQL services in Kotlin, but nothing that seems to have wide support or documentation.

Hey guys, yet another "which framework" question (sorry!) I've got experience doing back end development with Laravel, Express, and Rails. So far, I'm really liking rails and its tools for code generation. Rails does a lot for you and makes setting up an MVP/proof of concept very quick and painless. Are there any kotlin frameworks that are similar in this regard?

Honestly, I've had a much much easier time managing periodic tasks by executing them in AWS Lambda or Fargate

If i have a localhost http server [vert.x/ktor] exposed via port forwarding for a remote client - is there a way to restrict access by ip [something like htaccess]? i.e. only allow a particular ip or range of ips? [assuming i am not using ngrok or want to deploy to heroku/GAE]

does anyone have experiences with

ktor

,

exposed

and authentication? i'm looking at the different options at the moment, would be nice to get some feedback. for

OAuth

i assume i have to set-up an oauth provider (given that im storing my users in my own database / accessed via

exposed

), but not sure if there's a good way to do this in ktor. otherwise i'd probably go towards

JWT

since that's probably more straight-forward for now.

JWT with OAuth 2.0 is pretty awesome. You can validate the JWT is legit even before hitting the database with a user lookup

is there something similar to

Groovy on Grails

for kotiln?

Kotlin on Kale

i dont know if that made sense but itd be great if someone can help me out

hi guys! which one lib is more mature:

exposed

or

squash

? it seems both serve for same purpose.

exposed

is being maintained extensively at first sight, has more stars on github and reasonable documentation. but

squash

is used in all recent JetBrains demo apps like

kotlinconf-app

or

kotlin-fullstack-sample

. what would you suggest for beginners?

recommend me a URL parser in java that is not based on java.net.URL and not based on spring. Apache httpcomponents?

Of the three web server frameworks I've found in Kotlin - ktor, javelin and sparkjava-kotlin - are there any different design goals or use cases which would help me choose between them? I've been using spark-kotlin quite happily, and I'm looking to build straightforward web applications. But javelin in particular seems to sell itself as better than spark-kotlin.

For the Java backend, I'm getting platform declaration clashes on classes extending

Collection

on methods that would normally be on the mutable Java

Collection

interface but not on Kotlin's read-only interface. The declaration collision is against a

synthetic inheritor

, which seems to be generated at https://github.com/JetBrains/kotlin/blob/master/compiler/backend/src/org/jetbrains/kotlin/codegen/CollectionStubMethodGenerator.kt

What’s the default size for threading groups in your fav framework? Netty sets CPU*2. Jetty sets min(8), max(200). Undertow sets IO threads to #CPU, worker threads to #CPU*8. What do you use? Why?

using ktor for a test app. Can anyone help with something odd?

I just started my first kotlin project using ktor referring

<http://ktor.io/quickstart/gradle>

I'm getting error

Could not get unknown property 'ktor_version' for object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.

Below is the dependencies I'm using in build gradle file

dependencies {
    compile "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
    compile "io.ktor:ktor-server-netty:$ktor_version"
    testCompile group: 'junit', name: 'junit', version: '4.12'
}

@g4sarma that's how we create an embedded Jetty in http4k:

{ request: Request -> Response(OK).body("Hello World") }.asServer(Jetty(8000)).start().block()

I have a ktor question if anyone is willing to help. Having trouble using

withTestApplication

in my unit test because I am using a system property in my App like

val property = environment.config.property("randomproperty").getString()

I have a weird behavior here with Spring Boot MongoDb. This document:

@Document(collection = "schedules")
data class ScheduleDocument(val payload: Payload) {
}

is stored as:

{
  "_id" : ObjectId("5a636f2e5017622fc0c4654a"),
  "_class" : "example.Payload",
  "channel" : "push",
  "schedule" : ISODate("2018-01-20T16:32:46.535Z")
}

But I was expecting

payload

to be a subdocument, like this:

{
  "_id" : ObjectId("5a636f2e5017622fc0c4654a"),
  "_class" : "example.ScheduleDocument",
  "payload": {
    "channel" : "push",
    "schedule" : ISODate("2018-01-20T16:32:46.535Z")
  }
}

can anyone explain this behavior?

i'm looking into sending email notifications from my backend (ktor, exposed), does someone have experience with this and can suggest me a library? i found a couple on github so far but not sure which way to go.

You couldn’t have read that particular comment that fast, because it’s huge and thoughtful! Did you even click the link or just judging by the caption deciphered from URL?

Hello Guys, I'm training to run a Spring Boot application but when I try to compile it it seeds the following *None of the following functions can be called with the arguments supplied: public open fun run(p0: Any!, vararg p1: String!): ConfigurableApplicationContext! defined in org.springframework.boot.SpringApplication* Some ideas how can I solve it

Hi guys, I’m doing a Kotlin app using Spring boot. The thing is gradle’s kotlin-jpa plugin doesn’t work when starting the Spring boot app from Intellij run. I’ve found a workaround here: https://stackoverflow.com/questions/43170391/no-default-constructor-for-jpa-entity-with-kotlin-even-with-noarg-plugin by running “gradle bootRun”. But I’d like to understand why it’s not working…