Braintree Api与cakephp 3.0集成

"require": {
    "braintree/braintree_php": "^3.0"
}

// config/app.php

'Braintree' => [
    'environment' => 'sandbox', // 或者 'production'
    'merchantId' => 'your_merchant_id',
    'publicKey' => 'your_public_key',
    'privateKey' => 'your_private_key'
]

// src/Controller/PaymentsController.php

use Cake\Network\Http\Client;
use Braintree\ClientToken;

class PaymentsController extends AppController
{
    public function checkout()
    {
        $clientToken = ClientToken::generate();
        $this->set('clientToken', $clientToken);
    }
}

<!-- src/Template/Payments/checkout.ctp -->

<?= $this->Form->create(null, ['url' => ['controller' => 'Payments', 'action' => 'process']]) ?>
    <?= $this->Form->hidden('payment_method_nonce', ['id' => 'payment_method_nonce']) ?>
    <?= $this->Form->button('Pay Now', ['id' => 'pay-button']) ?>
<?= $this->Form->end() ?>

<script src="https://js.braintreegateway.com/web/dropin/1.31.2/js/dropin.min.js"></script>
<script>
    var button = document.querySelector('#pay-button');

    braintree.dropin.create({
        authorization: '<?= $clientToken ?>',
        container: '#dropin-container'
    }, function (createErr, instance) {
        button.addEventListener('click', function () {
            instance.requestPaymentMethod(function (err, payload) {
                document.querySelector('#payment_method_nonce').value = payload.nonce;
                document.querySelector('form').submit();
            });
        });
    });
</script>

// src/Controller/PaymentsController.php

use Braintree\Transaction;

class PaymentsController extends AppController
{
    public function process()
    {
        $paymentMethodNonce = $this->request->getData('payment_method_nonce');

        $result = Transaction::sale([
            'amount' => '10.00',
            'paymentMethodNonce' => $paymentMethodNonce,
            'options' => [
                'submitForSettlement' => true
            ]
        ]);

        if ($result->success) {
            // 支付成功
        } else {
            // 支付失败
        }
    }
}