Turbolinks Rails application Uncaught TypeError: Cannot read property 'parentNode'

Question

我正在尝试在 Rails turbolinks 站点上的 Ruby 中使用 Freshdesk 小部件。

自从我开始使用这个小部件，在初始页面加载后导航到其他页面时，我的控制台中总是出现以下错误：

> VM2797 <widget_id>.js:1 Uncaught TypeError: Cannot read property
> 'postMessage' of null
>     at Object.postMessage (VM2797 <widget_id>.js:1)
>     at Object.widgetRenderComplete (VM2797 <widget_id>.js:1)
>     at Object.handleMessage (VM2797 <widget_id>.js:1)

这是我的代码在添加一个带有 id 的 div 之前（我在我的视图中用 ID 作为变量调用它的部分）

<script>
  window.fwSettings={
    'widget_id': <%= widget_id %>
  };
  !function(){if("function"!=typeof window.FreshworksWidget){var n=function(){n.q.push(arguments)};n.q=[],window.FreshworksWidget=n}}()
</script>
<script type='text/javascript' src='https://widget.freshworks.com/widgets/<%= widget_id %>.js' async defer></script>

查看示例

<%= render "shared/freshdesk_widget", widget_id: 60000003593 %>

我考虑过使用 eventListener turbolinks:before-cache，它会查找 div 并在缓存之前将其删除。

这是现在的样子

<script type='text/javascript'>
  document.addEventListener("turbolinks:before-cache", function() {
    const deleteable = document.getElementById("div_to_delete");
    deleteable.parentNode.removeChild(deleteable);
  })
</script>

<div id="div_to_delete">
  <script>
    window.fwSettings={
      'widget_id': <%= widget_id %>
      };
      !function(){if("function"!=typeof window.FreshworksWidget){var n=function(){n.q.push(arguments)};n.q=[],window.FreshworksWidget=n}}()
  </script>
  <script type='text/javascript' src='https://widget.freshworks.com/widgets/<%= widget_id %>.js' async defer></script>
</div>

我遇到了两个错误

> VM49956:4 Uncaught TypeError: Cannot read property 'parentNode' of
> null
>         at HTMLDocument.<anonymous> (<anonymous>:4:15)
>         at 
  Object../node_modules/turbolinks/dist/turbolinks.js.e.dispatch
> (turbolinks.js:5)
>         at r.notifyApplicationBeforeCachingSnapshot 
  (turbolinks.js:6)
>         at r.cacheSnapshot (turbolinks.js:6)
>         at r.cacheSnapshot (turbolinks.js:5)
>         at r.<anonymous> (turbolinks.js:5)
>         at turbolinks.js:5

和之前一样

> VM2797 <widget_id>.js:1 Uncaught TypeError: Cannot read property
> 'postMessage' of null
>     at Object.postMessage (VM2797 <widget_id>.js:1)
>     at Object.widgetRenderComplete (VM2797 <widget_id>.js:1)
>     at Object.handleMessage (VM2797 <widget_id>.js:1)

提前致谢！干杯

Answer 1

删除元素不会删除 DOM 中的小部件，因此，据我所知，您只需在 window.FreshworksWidget 变量时才初始化小部件未定义。

仅用以下行替换您的所有代码：

<script>
if (window.FreshworksWidget === undenfined ) {
  window.fwSettings={
    'widget_id': <%= widget_id %>
  };
  !function(){if("function"!=typeof window.FreshworksWidget){var n=function(){n.q.push(arguments)};n.q=[],window.FreshworksWidget=n}}()
}
</script>

Turbolinks Rails application Uncaught TypeError: Cannot read property 'parentNode'

Turbolinks Rails application Uncaught TypeError: Cannot read property 'parentNode'

ruby-on-rails

widget

turbolinks

stimulusjs

freshdesk