durandal - DurandalJS - Widget is not reinitialized on subsequent requests

Question

This is an example of the problem: widget is not reinitialized on subsequent requests

I have a "pager" widget. The first time I navigate to a page where it is used, ctor is executed and the pager is initialized (page 1).

Now let say I navigate to page 6.

The problem is when I navigate to another page and then back to the page where the pager is, the pager (widget) is still rendered with page 6 selected and ctor is not executed. The widget controller is not a singleton.

Is there something I don't get?

Answer 1

由于页面没有被重新渲染（所以小部件），小部件的任何生命周期回调都不会被调用。您可以通过它与父页面的激活方法中的小部件进行通信

1. 从小部件侦听的根页面的激活方法引发事件
2. 更新一些可观察到的小部件订阅的数据
3. 或者，肮脏的方式 - 不要这样做，只需通过使用 with/if 绑定包装小部件来重新呈现小部件，这将随着每个激活方法调用而改变。如果您无法更改小部件代码，这可能会有所帮助，这不太可能。