如何在授權後進行捕獲？以及如何退款？ in omnipay

Question

omnipay沒有完整的文檔！我正在嘗試在授權後進行捕獲，但我似乎無法做到。

<?php 

if (!defined('BASEPATH')) 
    exit('No direct script access allowed'); 

use Omnipay\Common\GatewayFactory; 

class Welcome extends CI_Controller { 

    function __construct() { 
     parent::__construct(); 
     $this->load->helper('url'); 
    }  
    public function authorize() { 

     $gateway = GatewayFactory::create('PayPal_Express'); 
     $gateway->setUsername('***'); 
     $gateway->setPassword('***'); 
     $gateway->setSignature('***'); 
     $gateway->setTestMode(true); 

     $response = $gateway->authorize(
         array(
          'cancelUrl' => base_url('welcome/authorize_return'), 
          'returnUrl' => base_url('welcome/authorize_return'), 
          'amount' => '1.99', 
          'currency' => 'USD' 
         ) 
       )->send(); 

     $response->redirect(); 
    } 

    public function authorize_return() { 
     $gateway = GatewayFactory::create('PayPal_Express'); 
     $gateway->setUsername('***'); 
     $gateway->setPassword('***'); 
     $gateway->setSignature('***'); 
     $gateway->setTestMode(true); 

     $response = $gateway->completeAuthorize(
         array(
          'cancelUrl' => base_url('welcome/authorize_return'), 
          'returnUrl' => base_url('welcome/authorize_return'), 
          'amount' => '1.99', 
          'currency' => 'USD' 
         ) 
       )->send(); 

     echo $responsemsg = $response->getMessage(); 

     $data = $response->getData(); 
     $ref = $response->getTransactionReference(); 
     $response2 = $gateway->capture($data)->send(); 
     print_r($response2); 
    }  
} 

我需要從「待定」到「已完成」更改狀態（例如：之後我船的產品。）

還我該怎麼能做退款，當？如果交易狀態完成，我可以退款嗎？或僅限於特定狀態，它們是什麼？

我得到「你不能退還這筆交易類型」時，「付款狀態」是「待定」，當它爲「已完成」：

function __construct() { 
     parent::__construct(); 
     $this->load->helper('url'); 

     $this->gateway = GatewayFactory::create('PayPal_Express'); 
     $this->gateway->setUsername('***'); 
     $this->gateway->setPassword('***'); 
     $this->gateway->setSignature('***'); 
     $this->gateway->setTestMode(true); 
    } 
public function refund($transactionReference, $amount) { 

      $ref = $transactionReference; 

      $data = array(
       'transactionReference' => $ref, 
       'amount' => $amount, 
      ); 
      $response = $this->gateway->refund($data)->send(); 
      if ($response->isSuccessful()) { 
       // success 
       return 'done'; 
      } else { 
       return $response->getMessage(); 
      } 
     } 

Answer 1

如果你想立即獲取支付，請在您的初始請求中購買purchase()和completePurchase()而不是authorize()和completeAuthorize()（購買進行組合授權和拍攝）。

如果您想在稍後捕獲付款（例如發貨時），則需要執行以下操作。

// after initial completeAuthorize() 
// store $ref in your database with the payment 
$ref = $response->getTransactionReference(); 

// then later, when you want to capture it 
$data = array(
    'transactionReference' => $ref, 
    'amount' => '10.00', // pass original amount, or can be less 
); 
$response = $gateway->capture($data)->send(); 
if ($response->isSuccessful()) { 
    // success 
} else { 
    // error, maybe you took too long to capture the transaction 
    echo $response->getMessage(); 
}