PayPal API - 折扣？

Question

我試圖讓折扣適用於我寫的購物車。我正在使用Adaptive API系統，但似乎無法正確完成。我已經試過在SetPaymentOptions電話：

 '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') 
         } 
    }; 

..和甚至嘗試過在初始收費電話 - 但也似乎認識到優惠（並應用）。

 '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' 
              } 
             ] 
         } 
    }; 

UPDATE：嗯OK - 這個仍然有問題！

      '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 
            } 
            ] 

這就是價值觀，我傳遞，但在車結束，它顯示爲：

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

£0.00 

怪異的事情 - 是正在應用的折扣......只是不顯示???

Answer 1

我很好奇你在哪裏看到有一個「折扣」參數，即使在這些調用中可用.. ??它未在Pay或SetPaymentOptions的API參考中列出。

您需要做的是將折扣作爲SetPaymentOptions中的訂單項添加負數。所以這將是一個額外的行項目，其值爲-0.15。你可以命名項目「折扣」或任何你想要的，但再次，這些API沒有實際的折扣參數可用。