Question

我创建了带有四个selectOneMenu的数据表每当我更改第二个selectOneMenu的第一个selectOneMenu值需要在同一行上填充时再次选择第二个selectOneMenu第三个需要填充我通过将行号值传递给每个selectOneMenu（具有特定selectOneMenu用户必须单击的意图）来完成此操作但是每当我使用f：param传递值时，我在控制器上获取空值但是同样可以使用outputText打印数据表

请指导

<t:dataTable id="insertTaskDataTable" border="1"
                value="#{insertTask.taskList}" var="taskInfo" rowIndexVar="row"  
                iterationStatusVar="it">
                <t:column>
                <h:inputHidden  id="id" value="#{row}"/>
                </t:column>                 
            <t:column>
                <f:facet name="header">#{bundle['GROUP_HEADER']}</f:facet>
                <h:selectOneMenu id="taskGroup" value="#{taskInfo.groupList.comboValue}" onchange="document.getElementById('addTask:filterButton').click();">
                    <f:param  name="idTaskGroup" value="#{row}"/>
                    <t:outputText  name="id" value="#{row}"/>
                     <f:selectItems value="#{taskInfo.groupList.comboValues}" />
                </h:selectOneMenu>

            </t:column>
            <t:column>
                <f:facet  name="header">#{bundle['ACTIVITY_HEADER']}</f:facet>
                <h:selectOneMenu id="taskActivity" value="#{taskInfo.activityList.comboValue}">
                <f:ajax  render="taskSubActivity" listener="#{insertTask.handleActivityChange}"></f:ajax>   
                <f:selectItems value="#{taskInfo.activityList.comboValues}" />
                </h:selectOneMenu>

            </t:column>
            <t:column>
                <f:facet name="header">#{bundle['SUBACTIVITY_HEADER']}</f:facet>
                <h:selectOneMenu id="taskSubActivity" value="#{taskInfo.subActivityList.comboValue}">
                    <f:selectItems value="#{taskInfo.subActivityList.comboValues}" />
                </h:selectOneMenu>

            </t:column>
            <t:column>
                <f:facet name="header">#{bundle['COMPLEXTIY_HEADER']}</f:facet>
                <h:selectOneMenu id="taskComplexity" value="#{taskInfo.complexityList.comboValue}">
                    <f:selectItems value="#{taskInfo.complexityList.comboValues}" />
                </h:selectOneMenu>

            </t:column>

            <t:column>
                <f:facet name="header">#{bundle['BENCHMARK_EFFORT_HEADER']}</f:facet>
                <t:inputText  value="#{taskInfo.benchMarkHrs}" />
                <t:outputLabel value="hrs"/>
                <t:inputText  value="#{taskInfo.benchMarkMin}" />
                <t:outputLabel value="min"/>

            </t:column>

            <t:column>
                <f:facet name="header">#{bundle['DESCRIPTION_HEADER']}</f:facet>
                <t:inputText value="#{taskInfo.taskdescription}" />
            </t:column>


        </t:dataTable>
    </t:div>

            <a4j:commandButton id="filterButton" style="visibility:hidden;display:none" action="#{insertTask.handleGroupChange}" render="insertTaskDataTable" />

Answer 1

嗨，大家好我有解决方案

在这里，

    <t:dataTable id="insertTaskDataTable" border="1"
                value="#{insertTask.taskList}" var="taskInfo" rowIndexVar="row"  
                iterationStatusVar="it" rendered="#{insertTask.taskList[0] != null}" >

            <t:column>
                <f:facet name="header">#{bundle['GROUP_HEADER']}</f:facet>
                <h:selectOneMenu id="taskGroup" value="#{taskInfo.groupList.comboValue}"  onchange="document.getElementById('addTask:insertTaskDataTable:#{row}:groupButton').click();">

                     <f:selectItems value="#{taskInfo.groupList.comboValues}" />
                </h:selectOneMenu>

            </t:column>
            <t:column>
                <f:facet name="header">#{bundle['CATEGORY_HEADER']}</f:facet>
                <h:selectOneMenu id="taskCategory" value="#{taskInfo.categoryList.comboValue}"  onchange="document.getElementById('addTask:insertTaskDataTable:#{row}:categoryButton').click();">
                     <f:selectItems value="#{taskInfo.categoryList.comboValues}" />
                </h:selectOneMenu>

            </t:column>
            <t:column>
                <f:facet  name="header">#{bundle['ACTIVITY_HEADER']}</f:facet>
                <h:selectOneMenu id="taskActivity" value="#{taskInfo.activityList.comboValue}"  onchange="document.getElementById('addTask:insertTaskDataTable:#{row}:activityButton').click();">

                <f:selectItems value="#{taskInfo.activityList.comboValues}" />
                </h:selectOneMenu>

            </t:column>
            <t:column>
                <f:facet name="header">#{bundle['SUBACTIVITY_HEADER']}</f:facet>
                <h:selectOneMenu id="taskSubActivity" value="#{taskInfo.subActivityList.comboValue}" onchange="document.getElementById('addTask:insertTaskDataTable:#{row}:subActivityButton').click();">
                    <f:selectItems value="#{taskInfo.subActivityList.comboValues}" />
                </h:selectOneMenu>

            </t:column>
            <t:column>
                <f:facet name="header">#{bundle['COMPLEXTIY_HEADER']}</f:facet>
                <h:selectOneMenu id="taskComplexity" value="#{taskInfo.complexityList.comboValue}">
                    <f:selectItems value="#{taskInfo.complexityList.comboValues}" />
                </h:selectOneMenu>

            </t:column>

            <t:column>
                <f:facet name="header">#{bundle['BENCHMARK_EFFORT_HEADER']}</f:facet>
                <t:outputText  value="#{taskInfo.benchMarkHrs}" style="height: 10px; width: 50px;" />
                <t:outputLabel value=" hrs"/>
                <t:outputText value="#{taskInfo.benchMarkMin}" style="height: 10px; width: 50px;" />
                <t:outputLabel value="min"/>

            </t:column>

            <t:column>
                <f:facet name="header">#{bundle['DESCRIPTION_HEADER']}</f:facet>
                <t:inputText value="#{taskInfo.taskdescription}" />
                <h:commandButton id="groupButton" style="visibility:hidden;display:none" actionListener="#{insertTask.handleGroupChange}">
                    <f:attribute name="groupid" value="#{row}" />
                </h:commandButton>
                <h:commandButton id="categoryButton" style="visibility:hidden;display:none" actionListener="#{insertTask.handleCategoryChange}">
                    <f:attribute name="categoryid" value="#{row}" />
                </h:commandButton>
                <h:commandButton id="activityButton" style="visibility:hidden;display:none" actionListener="#{insertTask.handleActivityChange}">
                <f:attribute name="activityid" value="#{row}" />
                </h:commandButton>
                <h:commandButton id="subActivityButton" style="visibility:hidden;display:none" actionListener="#{insertTask.handleSubActivityChange}">
                <f:attribute name="subactivityid" value="#{row}" />
                </h:commandButton>
            </t:column>




        </t:dataTable>

Answer 2

最佳解决方案是 tomahawk library

t：selectOneRow

Java Side

private Long selectedRowIndex = -1L; //Along with it's getters and setters

JSP方

<t:dataTable var="var" value="#{bean.beanList}"
style="border: 1px solid black;">

<t:column>
    <t:selectOneRow value="#{bean.selectedRowIndex}" groupName="selection"
        id="selectBtn">
    </t:selectOneRow>
</t:column>

<t:column>
    <f:facet name="header">
        <h:outputLabel value="Names" />
    </f:facet>
    <t:outputText value="#{var.names}" />
</t:column>

<t:column>
    <f:facet name="header">
        <h:outputLabel value="Address" />
    </f:facet>
    <t:outputText value="#{var.address}" />
</t:column>

当“ selectedRowIndex ”为-1L时，表示行中没有任何内容被选中。每当您需要将页面设置为未选择无线电时，请将此值设置为-1L。

结果应该是这样的......

Select One Row in action

包括datatable中的selectOneMenu

2 个答案: