I would like to be able to use nested parameters defined in one configuration file in another for examle
# config/config.yaml (my custom configuration file)
database:
driver: pdo_mysql
host: localhost
user: dev
password: dev
dbname: dev
To be used in another configuration file
# config/packages/doctrine.yaml
url: 'mysql://%database.user%:%database.password%@%database.host%:%database.port%/%database.dbname%'
This currently does not work as I am not sure how to reference the variables in the Config package (https://symfony.com/doc/current/configuration.html)
Parameters are just flat key-value elements and can not be nested. This is written in the Symfony Documentation
You have to define a separate key for every parameter. The convention is to use a dot to separate namespaces. The dot does not make it an array, but makes it easier to read.
database.driver: pdo_mysql
database.host: localhost
database.user: dev
database.password: dev
database.dbname: dev
The parameters are then accessed exactly like you want it:
url: 'mysql://%database.user%:%database.password%@%database.host%:%database.port%/%database.dbname%'