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Improve service container parameters section #8399

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14 changes: 14 additions & 0 deletions service_container.rst
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Expand Up @@ -572,6 +572,20 @@ Actually, once you define a parameter, it can be referenced via the ``%parameter
syntax in *any* other service configuration file - like ``config.yml``. Many parameters
are defined in a :ref:`parameters.yml file <config-parameters-yml>`.

You can then fetch the parameter in the service::

class SiteUpdateManager
{
// ...

private $adminEmail;

public function __construct($adminEmail)
{
$this->adminEmail = $adminEmail;
}
}

You can also fetch parameters directly from the container::

public function newAction()
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