in my `application conf` i have ```port = $ PORT ``` this wo kotlinlang #ktor

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Title

n

Nikky

12/10/2019, 5:04 PM

in my

application.conf

i have

port = ${PORT}

this works fine on heroku and when this is set in the environment, but can i somehow set eg.

as fallback ? could not find how to do that in the HOCON spec

z

zpearce

12/10/2019, 5:18 PM

it's a two line thing:

port = 8080
port = ${?PORT}

n

Nikky

12/10/2019, 6:52 PM

oh thats almost too easy

but that seemed to not work.. it still crashes:

Exception in thread "main" com.typesafe.config.ConfigException$UnresolvedSubstitution: application.conf @ file:/home/nikky/dev/pentagame/backend/build/resources/main/application.conf: 4: Could not resolve substitution to a value: ${PORT}

z

zpearce

12/10/2019, 7:38 PM

you need the question mark

👆 1

https://github.com/lightbend/config#optional-system-or-env-variable-overrides

n

Nikky

12/11/2019, 1:57 PM

oh

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