# Authorize token custom query parameters

It often required to customize authorize token ulr parameters. For example you may want a mobile version of paypal pages. In this case you would like to change `cmd` from `_express-checkout` to `_express-checkout-mobile`. Or to change "Continue" button to "Pay" on the last paypal's page. To do so you have to send an extra query parameter `useraction=commit`. So here we would describe ways you can use this.

### Static usage.

You can pass these query parameters as api options:

```php
<?php

use Payum\Paypal\ExpressCheckout\Nvp\Api;
use Psr\Http\Client\ClientInterface;
use Psr\Http\Message\RequestInterface;
use Psr\Http\Message\StreamInterface;
use Psr\Http\Message\StreamInterfacel

/** @var ClientInterface $client */ 
/** @var RequestInterface $requestInterface */
/** @var StreamInterface $streamInterface */

$api = new Api([
    // ...
    'useraction' => Api::USERACTION_COMMIT,
    'cmd' => Api::CMD_EXPRESS_CHECKOUT_MOBILE,
], $client, $requestInterface, $streamInterface);

echo $api->getAuthorizeTokenUrl('aToken');
// https://www.sandbox.paypal.com/cgi-bin/webscr?cmd=_express-checkout-mobile&useraction=commit&token=aToken
```

### Runtime usage.

You could also pass these parameters as a second argument of `getAuthorizeTokenUrl` method. These parameters will overwrite values passed as options. You could also use second variant to pass any other parameters.

```php
<?php

use Payum\Paypal\ExpressCheckout\Nvp\Api;
use Psr\Http\Client\ClientInterface;
use Psr\Http\Message\RequestInterface;
use Psr\Http\Message\StreamInterface;
use Psr\Http\Message\StreamInterfacel

/** @var ClientInterface $client */ 
/** @var RequestInterface $requestInterface */
/** @var StreamInterface $streamInterface */

$api = new Api($options = [], $client, $requestInterface, $streamInterface);

echo $api->getAuthorizeTokenUrl('aToken', array(
    'useraction' => Api::USERACTION_COMMIT,
    'cmd' => Api::CMD_EXPRESS_CHECKOUT_MOBILE,
));

// https://www.sandbox.paypal.com/cgi-bin/webscr?cmd=_express-checkout-mobile&token=aToken
```

To pass these values using your PaymentDetails models set next fields:

```php
<?php
use Payum\Core\Model\ArrayObject;
use Payum\Paypal\ExpressCheckout\Nvp\Api;
use Payum\Core\Request\Capture;

$model = new ArrayObject;
$model['AUTHORIZE_TOKEN_CMD'] = Api::CMD_EXPRESS_CHECKOUT_MOBILE;
$model['AUTHORIZE_TOKEN_USERACTION'] = Api::USERACTION_COMMIT;

/** @var \Payum\Core\GatewayInterface $gateway */
$gateway->execute(new Capture($model));
```

***

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