A common pattern is to extend an existing config, overriding and/or adding new config values to it. The extension is done by including the base configuration, and then overriding the chosen values in the current config.
This page assumes that you are familiar with the contents of The Defaults List.
Extending a config from the same config group:
- db: mysql
host: localhost # from db/base_mysql
port: 3307 # overridden by db/mysql.yaml
user: omry # populated by db/mysql.yaml
password: secret # populated by db/mysql.yaml
encoding: utf8 # added by db/mysql.yaml
Extending a config from another config group:
To extend a config from a different config group, include it using an absolute path (/), and override the package to _here_. (_here_ is described in Packages)
It is otherwise identical to extending a config within the same config group.