JSF 2.0 F：AJAX渲染ID未找到 [英] jsf 2.0 f:ajax render ID not found

问题描述

当在弹出（PP1）保存按钮点击列表获取更新的项目。 但是，当preSS的项目列表中的更新按钮，渲染ID：Form1中：PP1是不是有错误时它正在呈现来临。如果不渲染=@所有它的工作原理，但它并不好。 （错误：＆LT; F：AJAX＆GT; 包含未知的ID：窗口1：PP1'）

 ＆LT; H：表格ID =Form1的prependid =假＆gt;
＆LT; H：panelGroup中的id =项目＆GT;
＆LT; UI：重复VAR =行动值=＃{dadadada}varStatus =状态＆GT;
＆LT; H：的commandButton值=保存＆GT;
//给ID未找到错误
＆LT; F：Ajax事件=点击执行=@形式呈现=：窗口1：PP1监听器=＃{fsfsfsfsfs}/＆GT;
＆LT; / H：的commandButton＆GT;
＆LT; / UI：重复＆GT;

＆LT; /小时：panelGroup中＆GT; //项目面板组

//弹出
＆LT; H：panelGroup中的id =PP1＆GT;
＆LT; D​​IV ID =popup2级=popup_block＆GT;

//保存按钮，在弹出的
＆LT; D​​IV CLASS =popupBody_save2＆GT;
            ＆LT; H：的commandButton形象=资源/图像/ saveBtn.gif值=保存＆GT;
             ＆LT; F：Ajax事件=点击执行=@形式呈现=项目监听器=＃{dfsfssfs}/＆GT;
            ＆LT; / H：的commandButton＆GT;
        ＆LT; / DIV＆GT;

＆LT; / DIV＆GT;
＆LT; /小时：panelGroup中＆GT;

＆LT; /小时：形式GT;
 

解决方案

在：Form1中：PP1 将无法正常工作，因为你有 prependId =假的形式。该 PP1 将无法工作，因为它再寻找在同一个范围内组件作为＆LT; UI：重复＆GT; 这是由它本身的 UINamingContainer 部分。

在打开网页浏览器，单击鼠标右键JSF页面和的查看源文件的获取生成的HTML。找到它是由＆LT生成的HTML元素; H：panelGroup中的id =PP1＆GT; 。它应该是这个样子。

 ＆LT;跨度ID =富：巴：PP1＆GT;
 

您需要使用完全 pfixed与这个ID $ P $：在渲染属性。

 ＆LT; F：AJAX渲染=：FOO：巴：PP1＆GT;
 

如果有一个自动生成的ID部分，如 j_id0 ，那么你需要给有问题的父组件的固定ID。

When the Save button in the popup(pp1) clicked the projects list gets updated. But when press the update button in the projects list, the render ID :form1:pp1 is not there error comes when its being rendered. If do render="@all" it works, but its not good. ( error : <f:ajax> contains an unknown id ':form1:pp1')

<h:form id="form1" prependid=false>
<h:panelGroup id="projects">
<ui:repeat var="action" value="#{dadadada}" varStatus="status">
<h:commandButton value="Save">
//gives id not found error
<f:ajax event="click" execute="@form" render=":form1:pp1" listener="#{fsfsfsfsfs}" />
</h:commandButton>
</ui:repeat>

</h:panelGroup> // project panel group

//popup
<h:panelGroup id="pp1">
<div id="popup2" class="popup_block">

//save button in the popup
<div class="popupBody_save2">
            <h:commandButton  image="resources/images/saveBtn.gif" value="Save">
             <f:ajax event="click" execute="@form" render="projects" listener="#{dfsfssfs}" />
            </h:commandButton>
        </div>

</div>
</h:panelGroup>

</h:form>

解决方案

The :form1:pp1 won't work since you have prependId="false" on the form. The pp1 won't work since it's then looking for the component in the same scope as <ui:repeat> which is by itself an UINamingContainer component.

Open the JSF page in webbrowser, rightclick and View Source to get the generated HTML. Locate the HTML element which is generated by <h:panelGroup id="pp1">. It should look something like this

<span id="foo:bar:pp1">

You need to use exactly this ID prefixed with : in the render attribute.

<f:ajax render=":foo:bar:pp1">

If there's an autogenerated ID part such as j_id0, then you need to give the parent component in question an fixed ID.

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