(Quick Reference)

4.1.1 Options for the YML format Config

Version: 3.2.6

4.1.1 Options for the YML format Config

application.yml was introduced in Grails 3.0 for an alternative format for the configuration tasks.

Using system properties / command line arguments

Suppose you are using the JDBC_CONNECTION_STRING command line argument and you want to access the same in the yml file then it can be done in the following manner:

production:
    dataSource:
        url: '${JDBC_CONNECTION_STRING}'

Similarly system arguments can be accessed.

You will need to have this in build.gradle to modify the bootRun target if grails run-app is used to start the application

bootRun {
    systemProperties = System.properties
}

For testing the following will need to change the test task as follows

test {
    systemProperties = System.properties
}