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Explained some issues about command constructors and configure #9969

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Jun 27, 2018
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Explained some issues about command constructors and configure #9969

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28 changes: 28 additions & 0 deletions console.rst
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Expand Up @@ -61,6 +61,34 @@ method. Then you can optionally define a help message and the
;
}

The ``configure()`` command is called automatically at the end of the command
constructor. If your command defines its own constructor, set the properties
first and then call to the parent constructor, to make those properties
available in the ``configure()`` method::

class CreateUserCommand extends Command
{
// ...

public function __construct(bool $requirePassword = false)
{
// best practices recommend to call the parent constructor first and
// then set your own properties. That wouldn't work in this case
// because configure() needs the properties set in this constructor
$this->requirePassword = $requirePassword;

parent::__construct();
}

public function configure()
{
$this
// ...
->addArgument('password', $this->requirePassword ? InputArgument::OPTIONAL : InputArgument::REQUIRED, 'User password')
;
}
}

Registering the Command
-----------------------

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