How to read Environment variables with a Fallback of application.conf in Play?

[kant kodali]

Hi,

How to read Environment variables with a Fallback of application.conf in Play?

Right now, I am using "Play.application().configuration()" to read the config application.conf but I would want to see if the Env variables exist first

for the same key in application.conf and if it does I want to read the value from an Environment variable and if not I want to read from application.cong

Thanks!

[Greg Methvin]

You can use the ${?VAR} fallback syntax in config:

key = "default value"

key = ${?VAR} // this line won't do anything if VAR doesn't exist

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Greg Methvin

Tech Lead - Play Framework

Lightbend, Inc.