How to add an array with values in Symfony2 configuration?

Question

I would like to add a simple list of values in a configuration files (config.yml). For example :

my_bundle:
    columns: [\"col1\", \"col2\"]

W

Answer 1

If you want to achieve a node like this, just do:

$rootNode
    ->children()
        ->arrayNode('columns')
            ->prototype('scalar')
            ->end()
        ->end()
    ->end()
;