在 PayPal 订单和 PayPal 订阅之间切换

Question

我一直在使用 paypal 结账，但遇到了困难，我的公司提供的服务可以一次性购买，也可以重复购买，我设计了结账页面并使用了他们可以选择的下拉菜单服务水平和频率，我现在注意到在实施 paypal 时，我必须使用“intent=subscription”来进行订阅，但如果我有，则无法下达正常订单，如果我有两个脚本包括在内，然后我在结帐时收到 500 错误。无论如何我可以 unload/reload 当按钮改变时我需要的脚本，这就是我必须改变按钮的东西

$(".product-info :input").change(function () {
             if($( ".productselect" ).val() == "basic"){
                 $( "#basic" ).show();
                 $( "#plus" ).hide();
                 $( "#premier" ).hide();
             }else if ($( ".productselect" ).val() == "plus"){
                 $( "#basic" ).hide();
                 $( "#plus" ).show();
                 $( "#premier" ).hide();
             }else if ($( ".productselect" ).val() == "premier"){
                 $( "#basic" ).hide();
                 $( "#plus" ).hide();
                 $( "#premier" ).show();
             }
             if($( ".timingselect" ).val() == "Single"){
                paypalsingle();
                $(".totamount").html("$" + $(".productselect").find(':selected').data('cost'));
             }else if ($( ".timingselect" ).val() == "Bi"){
                 paypalmulti($(".productselect").find(':selected').data('ppbi'));
                $(".totamount").html("$" + $(".productselect").find(':selected').data('costbi'));
             }else if ($( ".timingselect" ).val() == "Week"){
                 paypalmulti($(".productselect").find(':selected').data('ppweek'));
                $(".totamount").html("$" + $(".productselect").find(':selected').data('costweek'));
             }
        });
        function paypalsingle(){
            document.getElementById('paypal-button-container').innerHTML = null;
            document.getElementById('paypal-payment-button').innerHTML = null;
            paypal.Buttons({
                style:{
                    color:'blue',
                    shape:'pill'
                },
                createOrder: function (data, actions) {
                    var cost = parseFloat(document.getElementsByClassName('totamount')[0].innerText.replace('$',''));
                    var address = document.getElementsByClassName('basictitle')[0].innerText;

                    return actions.order.create({
                        purchase_units : [{
                            amount: {
                                name: '######### Services',
                                description: "Lawn mowing at: " + address,
                                value: cost
                            }
                        }]
                    });
                },
                onApprove: function (data, actions) {
                    return actions.order.capture().then(function (details) {
                        console.log(details);
                        var prod, timing;
                         if($( ".productselect" ).val() == "basic"){
                             prod ="basic";
                         }else if ($( ".productselect" ).val() == "plus"){
                             prod ="plus";
                         }else if ($( ".productselect" ).val() == "premier"){
                             prod ="premier";
                         }
                         if($( ".timingselect" ).val() == "Single"){
                             timing ="single";
                         }else if ($( ".timingselect" ).val() == "Bi"){
                             timing ="bi";
                         }else if ($( ".timingselect" ).val() == "Week"){
                             timing ="weekly";
                         }
                        window.location = "paymentmade.php?UserID=<?php echo $userid ?>&orderID="+data.orderID+"&multi=true&timing="+timing+"&prod="+prod;
                    })
                },
                onCancel: function (data) {
                    window.location.replace("quote.php?fname=<?php echo $fname ?> &lname=<?php echo $lname ?>&email=<?php echo $email ?>&tel=<?php echo $tel ?>&lot=<?php echo $lot ?>&building=<?php echo $building ?>&lotID=<?php echo $lotid ?>")
                }
            }).render('#paypal-payment-button');
        }
        function paypalmulti(ppid){
            document.getElementById('paypal-button-container').innerHTML = null;
            document.getElementById('paypal-payment-button').innerHTML = null;
            paypal.Buttons({
                style: {
                    shape: 'pill',
                    color:'blue',
                    layout: 'vertical',
                    label: 'paypal'
                },
                createSubscription: function(data, actions) {
                    return actions.subscription.create({
                        /* Creates the subscription */
                        plan_id: ppid
                    });
                },
                onApprove: function (data, actions) {
                    return actions.order.capture().then(function (details) {
                        console.log(details);
                        var prod, timing;
                         if($( ".productselect" ).val() == "basic"){
                             prod ="basic";
                         }else if ($( ".productselect" ).val() == "plus"){
                             prod ="plus";
                         }else if ($( ".productselect" ).val() == "premier"){
                             prod ="premier";
                         }
                         if($( ".timingselect" ).val() == "Single"){
                             timing ="single";
                         }else if ($( ".timingselect" ).val() == "Bi"){
                             timing ="bi";
                         }else if ($( ".timingselect" ).val() == "Week"){
                             timing ="weekly";
                         }
                        window.location = "paymentmade.php?UserID=<?php echo $userid ?>&orderID="+data.orderID+"&multi=true&timing="+timing+"&prod="+prod;
                    })
                },
                onCancel: function (data) {
                    window.location.replace("quote.php?fname=<?php echo $fname ?> &lname=<?php echo $lname ?>&email=<?php echo $email ?>&tel=<?php echo $tel ?>&lot=<?php echo $lot ?>&building=<?php echo $building ?>&lotID=<?php echo $lotid ?>")
                }
            }).render('#paypal-button-container'); // Renders the PayPal button
        }

Answer 1

您可以使用如下辅助函数来动态 load/reload SDK：

function loadAsync(url, callback) {
  var s = document.createElement('script');
  s.setAttribute('src', url); s.onload = callback;
  document.head.insertBefore(s, document.head.firstElementChild);
}

// Usage Example:

loadAsync('https://www.paypal.com/sdk/js?client-id=test&currency=USD', function() {
  paypal.Buttons({

    // Set up the transaction
    createOrder: function(data, actions) {
        return actions.order.create({
            purchase_units: [{
                amount: {
                    value: '0.01'
                }
            }]
        });
    },

    // Finalize the transaction
    onApprove: function(data, actions) {
        return actions.order.capture().then(function(details) {
            // Show a success message to the buyer
            alert('Transaction completed by ' + details.payer.name.given_name);
        });
    }

  }).render('body');  // Replace with selector of desired container to render in
});

（您的回调当然可以是一个命名函数，例如您的 paypalsingle，而不是像上面的用法示例中那样的匿名函数）

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