PayPal API - 折扣？

Question

我正试图获得折扣，以申请我写的购物车。我正在使用Adaptive API系统，但我似乎无法做到正确。我在 SetPaymentOptions 调用中尝试过它：

      'receiverOptions' => [
                             {
                               'receiver' => {
                                               'email' => 'foo@live.co.uk'
                                             },
                               'invoiceData' => {
                                                  'totalShipping' => '8.00',
                                                  'totalTax' => 0,
                                                  'item' => [
                                                              {
                                                                'itemPrice' => '15.00',
                                                                'name' => 'Alice in Wonderland Mechanism Necklace',
                                                                'price' => '15',
                                                                'itemCount' => 1
                                                              },
                                                              {
                                                                'itemPrice' => '30.00',
                                                                'name' => '110 Year Old Unicorn Dial Necklace',
                                                                'price' => '30',
                                                                'itemCount' => 1
                                                              }
                                                            ],
                                                  'discount' => '0.15'
                                                }
                             }
                           ],
      'requestEnvelope' => {
                             'errorLanguage' => 'en_US',
                             'detailLevel' => 'ReturnAll'
                           },
      'payKey' => 'AP-2F6415163M814733M',
      'SenderOptions' => {
                           'requireShippingAddressSelection' => bless( do{\(my $o = 1)}, 'JSON::XS::Boolean' )
                         }
    };

..甚至在最初的支付电话中尝试过 - 但似乎都没有认出折扣（并应用它）。

     'currencyCode' => 'GBP',
      'requestEnvelope' => {
                             'errorLanguage' => 'en_US',
                             'detailLevel' => 'ReturnAll'
                           },
      'cancelUrl' => 'https://sitedev.net/',
      'discount' => '0.15',
      'actionType' => 'CREATE',
      'ipnNotificationUrl' => 'https://sitedev.net/cgi-bin/ipn.cgi',
      'returnUrl' => 'https://sitedev.net/myorders',
      'reverseAllParallelPaymentsOnError' => bless( do{\(my $o = 0)}, 'JSON::XS::Boolean' ),
      'receiverList' => {
                          'receiver' => [
                                          {
                                            'email' => 'foo@live.co.uk',
                                            'amount' => '53.00',
                                            'invoiceId' => '47',
                                            'paymentType' => 'GOODS'
                                          }
                                        ]
                        }
    };

更新：嗯，好吧 - 仍然有这个问题！

                         'item' => [
                                     {
                                       'itemPrice' => '25.00',
                                       'name' => 'Cryptex - 16Gb USB Drive',
                                       'price' => '25',
                                       'itemCount' => 1
                                     },
                                     {
                                       'name' => 'Special Discount',
                                       'price' => '-2.50',
                                       'itemCount' => 1
                                     },
                                     {
                                       'itemPrice' => '5.00',
                                       'name' => 'Shipping',
                                       'price' => '5.00',
                                       'itemCount' => 1
                                     }
                                   ]

这就是我传入的值，但在购物车结束时，它显示为：

 Steampunk Junkies £27.50
 Cryptex - 16Gb USB Drive
 £25.00
 Shipping
 £5.00

 £0.00

奇怪的是 - 折扣正在应用......只是没有显示???

Answer 1

我很好奇你在哪里看到＆＃34;折扣＆＃34;参数甚至在这些调用中可用.. ??它未列在Pay或SetPaymentOptions的API参考中。

您需要做的是在SetPaymentOptions中将折扣添加为负数金额的订单项。因此，它将是一个额外的行项目，其值为-0.15。你可以命名这个项目＆＃34;折扣＆＃34;或者你想要的任何东西，但同样，这些API中没有实际的折扣参数。