jsf-2 - p:splitButton menuitem with immediate="true" 总是删除 p:dataTable 的最后一行

Question

p:splitButton menuitem 用于具有 immediate="true" 的删除功能总是删除数据表的最后一行，即使中间行被删除，它也总是删除最后一行。这是如何引起的，我该如何解决？下面的数据表在 p:wizard 内，我必须在按下 p:wizard 的下一步按钮时验证数据表字段值。

<p:dataTable id="nomineeEducation" var="education" value="#{nominee.prospective.schoolHistoryToSave}" rowIndexVar="status"
        rendered="#{fn:length(nominee.prospective.schoolHistoryToSave) > 0}">
        <p:column headerText="School" width="250">
            <p:selectOneMenu value="#{education.lookupSchoolId}" required="true"
                requiredMessage="Education# #{status+1}: Please select School.">
                <f:selectItem itemLabel="--School--" itemValue="#{null}" />
                <f:selectItems value="#{selectItemList.schoolList}" />
            </p:selectOneMenu>
        </p:column>
        <p:column headerText="Degree Obtained" width="250">
            <p:selectOneMenu value="#{education.schoolAffiliations[0].educationId}" required="true"
                requiredMessage="Education# #{status+1}: Please select Degree Obtained.">
                <f:selectItem itemLabel="--Degree--" itemValue="#{null}" />
                <f:selectItems value="#{selectItemList.educationList}" />
            </p:selectOneMenu>
        </p:column>
        <p:column headerText="Dates Attended" width="150">
            <p:selectOneMenu value="#{education.underGradMonth}" required="true"
                requiredMessage="Education# #{status+1}: Please select Degree Month.">
                <f:selectItem itemLabel="--Month--" itemValue="#{null}" />
                <f:selectItems value="#{selectItemList.monthList}" />
            </p:selectOneMenu>
            <p:selectOneMenu value="#{education.underGradYear}" required="true"
                requiredMessage="Education# #{status+1}: Please select Degree Year.">
                <f:selectItem itemLabel="--Year--" itemValue="#{null}" />
                <f:selectItems value="#{selectItemList.yearList}" />
            </p:selectOneMenu>
        </p:column>         
        <p:column headerText="Action" width="150">
            <p:splitButton value="Select">
                <p:menuitem value="Delete" action="#{nominee.deleteEducation(education, false)}" update="nomineeEducation" icon="ui-icon-close"  immediate="true"/>
                <p:menuitem value="Add New" action="#{nominee.addEducation(false)}" update="nomineeEducation" icon="ui-icon-plus" 
                    rendered="#{fn:length(nominee.prospective.schoolHistoryToSave) eq (status+1)}" />
            </p:splitButton>
        </p:column>
    </p:dataTable>

Answer 1

如http://forum.primefaces.org/viewtopic.php?f=3&t=38506所述，如果使用immediate="true".

一种解决方法是将您的splitButton代码更改为：

 <p:splitButton value="Select">
   <p:menuitem value="Delete" 
               action="#{nominee.deleteEducation(education, false)}" 
               update="nomineeEducation" 
               icon="ui-icon-close"  
               process="@this"
               global="false"
               />
   <p:menuitem value="Add New" 
               action="#{nominee.addEducation(false)}" 
               update="nomineeEducation" 
               icon="ui-icon-plus" 
               rendered="#{fn:length(nominee.prospective.schoolHistoryToSave) eq (status+1)}" 
               />
 </p:splitButton>