JSF2.0部分渲染UI：定义 [英] JSF2.0 Partial Render with ui:define

问题描述

我使用的facelet模板，我想我运行到一个问题，用户界面​​：定义和JSF生命周期。我template.xhtml包括在头一个固定的菜单，简化它具有像这样的链接：

I'm using facelet templating and I think I'm running into an issue with ui:define and the JSF lifecycle. My template.xhtml contains a fixed menu in the header, simplified it has links like this:

<h:commandLink value="Click Me">
    <f:ajax update="#{myBean.listener}" render="contentpanel"/>
</h:commandLink>

本的template.xhtml还包含一个用户界面：插入语句：

The template.xhtml also contains a ui:insert statement:

<ui:insert name="content">
    <h:outputLabel value="content placeholder"/>
</ui:insert>

现在我有一个content.xhtml它看起来像：

Now I have a content.xhtml which looks like:

<ui:composition template="template.xhtml">
    <ui:define name="content">
        <h:panelGroup id="contentpanel"/>
    </ui:define>
</ui:composition>

这么多的介绍。当我点击commandlink点击我我打电话给我的听众。此侦听器设置在backingbean参考依据我点击了链接，动态加载内容。

So much for the introduction. When I click the commandlink 'Click Me' I'm calling my listener. This listener sets a reference in a backingbean to dynamically load the content based on the link I clicked.

这呈现不这样做，我第一次preSS的commandlink。那么它基本上看起来像它首先做了重新渲染，然后调用的另一种方法监听，而不是围绕。所以，当我第一次点击，似乎什么都没有发生。当我点击了我第二次​​看到，是为第一次点击设置内容。当我点击第三次我看到的第二次点击的内容。

This rendering is not done the first time I press the commandlink. Well it basically looks like it first does the re-render and then call the listener instead of the other way around. So when I first click, nothing seems to happen. When I click for the second time I see the content that was set for the first click. When I click for the third time I see the content of the second click.

我想这是因为用户界面：定义视图已经重新建在JSF生命周期的恢复视图阶段。任何想法如何克服呢？

I think it's because the ui:define view is already re-built in the 'Restore View' phase of the JSF lifecycle. Any ideas on how to overcome this?

更新

好像我的假设是错误的。这样做的原因似乎是不同的东西。该＃{myBean.listener} 有一个 @SessionScoped @ManagedProperty 的CommandLink点击之后被更新。该的ContentPanel实际上是通过加载数据＃{myBean.data} 是 @RequestScoped 。这＃{myBean.data} 没有正确地重新加载数据。我通过直接传递的getData（）方法将 @SessionScoped 豆解决了这个问题。

Seems like my assumption was wrong. The cause of this seems to be something different. The #{myBean.listener} has a @SessionScoped @ManagedProperty which is updated after the CommandLink is clicked. The contentpanel actually loads data via the #{myBean.data} which is @RequestScoped. This #{myBean.data} did not reload the data correctly. I solved it by passing the getData() method directly to the @SessionScoped bean.

可能会有点混乱。但我的结论：不工作，部分渲染它通过的facelet模板加载的组件（ UI：定义/ UI：插入）

Might be a bit confusing. But my conclusion: it does work to partial render a component which is loaded via facelet templating (ui:define / ui:insert)

推荐答案

好像我的假设是错误的。这样做的原因似乎是不同的东西。在＃{} myBean.listener有@SessionScoped @ManagedProperty的CommandLink被点击后更新。该的ContentPanel实际上是通过＃{myBean.data}这是@RequestScoped加载数据。这个＃{myBean.data}没有正确地重新加载数据。我通过直接传递getData（）方法的@SessionScoped bean的解决了这个问题。

Seems like my assumption was wrong. The cause of this seems to be something different. The #{myBean.listener} has a @SessionScoped @ManagedProperty which is updated after the CommandLink is clicked. The contentpanel actually loads data via the #{myBean.data} which is @RequestScoped. This #{myBean.data} did not reload the data correctly. I solved it by passing the getData() method directly to the @SessionScoped bean.

可能会有点混乱。但我的结论是：它不工作，部分呈现其通过的facelet模板加载的组件（UI：定义/ UI：插入）

Might be a bit confusing. But my conclusion: it does work to partial render a component which is loaded via facelet templating (ui:define / ui:insert)

这篇关于JSF2.0部分渲染UI：定义的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！