问Paypal在单页面应用程序中的实现

EN

exports.create = function (req, res) {
    //Payment object
    var payment = {
       //fill details from DB
    };   

    //Passing the payment over to PayPal
    paypal.payment.create(payment, function (error, payment) {
        if (error) {
            console.log(error);
        } else {
            if (payment.payer.payment_method === 'paypal') {
                req.session.paymentId = payment.id;
                var redirectUrl;
                for (var i = 0; i < payment.links.length; i++) {
                    var link = payment.links[i];
                    if (link.method === 'REDIRECT') {
                        redirectUrl = link.href;
                    }
                }
                res.redirect(redirectUrl);
            }
        }
    });
};

This redirects user to paypal and once user confirms or cancels payment, the redirect urls are called. And in the success redirect url I capture the payment details into the databse and render a html in this opened window with the confirmation.

exports.execute = function (req, res) {
    var paymentId = req.session.paymentId;
    var payerId = req.param('PayerID');

    // 1. if this is executed, then that means the payment was successful, now store the paymentId, payerId and token into the database
    // 2. At the close of the popup window open a confirmation for the reserved listing
    var details = {"payer_id": payerId};
    paypal.payment.execute(paymentId, details, function (error, payment) {
        if (error) {
            console.log(error);
        } else {
            //res.send("Hell yeah!");
            res.render('paypalSuccess', {payerId: payerId, paymentId: paymentId});
        }
    });
};