如何通过RequestContext更新 [英] How to update via RequestContext

问题描述

我正在尝试使用RequestContext.update()更新表 以下代码正在运行(jsf):

I am trying to update a table by using RequestContext.update() The following code is working (jsf):

<h:panelGrid columns="2" style="width: 100%" columnClasses="treeColumn,tableColumn">
        <h:panelGroup id="treePanel">
            <p:tree id="tree" 
                    value="#{bean.root}" 
                    var="node" 
                    dynamic="true"
                    cache="true"
                    animate="true"
                    selectionMode="single"
                    selection="#{bean.selectedNode}"
                    rendered="#{bean.renderTree}"> 
                <p:ajax event="select" listener="#{bean.onNodeSelect}" update=":mainForm:treePanel,:mainForm:tablePanel"/>
                <p:ajax event="collapse" listener="#{bean.onNodeCollapse}"/>
                <p:treeNode expandedIcon="ui-icon-folder-open"  
                            collapsedIcon="ui-icon-folder-collapsed">  
                    <h:outputText value="#{node.name}" styleClass="tableTreeText"/>  
                </p:treeNode> 
                 <p:treeNode expandedIcon="ui-icon-folder-open"  
                             collapsedIcon="ui-icon-folder-collapsed">  
                    <h:outputText value="#{node.name}" styleClass="tableTreeText"/>  
                </p:treeNode> 
            </p:tree> 
        </h:panelGroup>
        <h:panelGroup id="tablePanel" styleClass="acqPanelTable">
            <p:dataTable id="acqDataTable"
                         widgetVar="acqTablehdsWidget"
                         var="acq"
                         value="#{bean.list}" 
                         rendered="#{bean.renderTable}"
                         filteredValue="#{bean.filteredList}"
                         paginator="true"
                         paginatorPosition="bottom"

     .....
     ....
     ...
     ..
     .

但不通过服务器端:

 RequestContext requestContext = RequestContext.getCurrentInstance();
 requestContext.update(":mainForm:tablePanel");
 renderTable = true;

我不知道有什么不同?

感谢您的帮助，

谢谢

推荐答案

删除前导冒号.

requestContext.update("mainForm:tablePanel");

始终相对于UIViewRoot进行解析.仅当您当前坐在视图的UINamingContainer组件中时，前导冒号才有效.

It's always resolved relative to UIViewRoot. The leading colon is only valid when you're currently sitting in an UINamingContainer component in the view.

这篇关于如何通过RequestContext更新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！