如何使用 django-push-notifications 实现 web 客户端？

Question

我已经使用 django-push-notifications 成功实施了 APNS。而且我发现这种依赖性正在增长，并且也有 Web Push Notifications。我曾尝试跟进给定的代码，但看不到 registation_id。我得到了

Uncaught (in promise) DOMException` 
index.html?_ijt=f2lo8aqelnrfm7g1266vtapp67:1

我把 chrome 一个参数给 loadVersionBrowser() 以避免错误

Uncaught TypeError: Cannot read property 'match' of undefined

这是我当前的文件

<html>
<script>
// Utils functions:
function urlBase64ToUint8Array (base64String) {
        var padding = '='.repeat((4 - base64String.length % 4) % 4)
        var base64 = (base64String + padding)
                .replace(/\-/g, '+')
                .replace(/_/g, '/')

        var rawData = window.atob(base64)
        var outputArray = new Uint8Array(rawData.length)

        for (var i = 0; i < rawData.length; ++i) {
                outputArray[i] = rawData.charCodeAt(i)
        }
        return outputArray;
}
function loadVersionBrowser (userAgent) {
        var ua = userAgent, tem, M = ua.match(/(opera|chrome|safari|firefox|msie|trident(?=\/))\/?\s*(\d+)/i) || [];
        if (/trident/i.test(M[1])) {
                tem = /\brv[ :]+(\d+)/g.exec(ua) || [];
                return {name: 'IE', version: (tem[1] || '')};
        }
        if (M[1] === 'Chrome') {
                tem = ua.match(/\bOPR\/(\d+)/);
                if (tem != null) {
                        return {name: 'Opera', version: tem[1]};
                }
        }
        M = M[2] ? [M[1], M[2]] : [navigator.appName, navigator.appVersion, '-?'];
        if ((tem = ua.match(/version\/(\d+)/i)) != null) {
                M.splice(1, 1, tem[1]);
        }
        return {
                name: M[0],
                version: M[1]
        };
};
var applicationServerKey = "BHZZKYSonkdaKjxjgw7DKYO45PmetHY7jprxWn4K4gfZSxUuvyQRe1LegYKoKJzv8qhi5HiIO4wjn6SP9Gg1ftk";
// In your ready listener
if ('serviceWorker' in navigator) {
  // The service worker has to store in the root of the app
  // 
  var browser = loadVersionBrowser('chrome');
  navigator.serviceWorker.register('navigatorPush.service.js?version=1.0.0').then(function (reg) {
    reg.pushManager.subscribe({
      userVisibleOnly: true,
      applicationServerKey: urlBase64ToUint8Array(applicationServerKey)
    }).then(function (sub) {
      var endpointParts = sub.endpoint.split('/');
      var registration_id = endpointParts[endpointParts.length - 1];
      var data = {
        'browser': browser.name.toUpperCase(),
        'p256dh': btoa(String.fromCharCode.apply(null, new Uint8Array(sub.getKey('p256dh')))),
        'auth': btoa(String.fromCharCode.apply(null, new Uint8Array(sub.getKey('auth')))),
        'name': 'XXXXX',
        'registration_id': registration_id
      };
      console.log(data);
    })
  }).catch(function (err) {
    console.log(':^(', err);
  });
}
</script>
Hello
</html>

问题：
1.我哪里错了？
2. Web Push Notification Gateway默认使用FCM吗？

Answer 1

这一行：

var ua = userAgent, tem, M = ua.match(/(opera|chrome|safari|firefox|msie|trident(?=\/))\/?\s*(\d+)/i) || [];

很奇怪。考虑将其转换成类似的东西：

var ua = userAgent;
var tem;
var M = ua.match(/(opera|chrome|safari|firefox|msie|trident(?=\/))\/?\s*(\d+)/i) || [];

您不能在声明变量的同一语句中使用它。

至于第二个问题，网络推送通知将（我认为）使用 firebase chrome，以及与其他浏览器相关的任何其他提供商。这是由 django-push-notifications 模块处理的，您不必担心。

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