我想为Primefaces表创建编辑表单。我测试了这段代码:
<h:form id="form">
<p:dataTable id="tbl" var="systemuser" value="#{systemusers.systemUsers}"
selectionMode="single" selection="#{systemusers.selectedSystemUser}" rowKey="#{systemuser.username}" lazy="true"
resizableColumns="true"
>
<p:ajax event="rowSelect" listener="#{systemusers.onRowSelect}" update=":form:carDetail" oncomplete="PF('carDialog').show()" />
....................
</p:dataTable>
<p:dialog id="wd" header="System User Details" widgetVar="carDialog" modal="true" showEffect="fade" hideEffect="fade" resizable="true">
<p:outputPanel id="carDetail" style="text-align:center;">
<p:panelGrid columns="2" columnClasses="label,value">
<h:outputLabel for="id" value="ID" />
<p:outputLabel id="id" value="#{systemusers.selectedSystemUser.id}" rendered="#{not systemusers.editable}"/>
<h:inputText value="#{systemusers.selectedSystemUser.id}" rendered="#{systemusers.editable}" />
........
</p:panelGrid>
</p:outputPanel>
<f:facet name="footer">
<p:commandButton value="Edit System User" rendered="#{not systemusers.editable}"
actionListener="#{systemusers.editRecord(false)}">
<f:ajax render=":form:wd" execute=":form:wd"></f:ajax>
</p:commandButton>
<p:commandButton value="Cancel" rendered="#{systemusers.editable}" actionListener="#{systemusers.editRecord(true)}">
<f:ajax render=":form" execute=":form"></f:ajax>
</p:commandButton>
</f:facet>
</p:dialog>
<p:contextMenu for="tbl">
<p:menuitem value="View" update="carDetail" icon="fa fa-search" oncomplete="PF('carDialog').show()"/>
<p:menuitem value="Delete" update="tbl" icon="fa fa-remove" actionListener="#{systemusers.deleteSystemUser}">
<p:confirm header="Confirmation" message="Are you sure?" icon="fa fa-warning" />
</p:menuitem>
</p:contextMenu>
<p:confirmDialog global="true" showEffect="fade" hideEffect="fade">
<p:commandButton value="Yes" type="button" styleClass="ui-confirmdialog-yes" icon="fa fa-check" />
<p:commandButton value="No" type="button" styleClass="ui-confirmdialog-no" icon="fa fa-remove" />
</p:confirmDialog>
</h:form>
管理bean:
@Named
@RequestScoped
public class Systemusers implements Serializable
{
.......
public void editRecord(boolean editable)
{
SessionFactory factory = HibernateUtils.getSessionFactory();
Session session = factory.getCurrentSession();
try
{
session.getTransaction().begin();
SystemUsersModel obj = new SystemUsersModel();
obj.setId(selectedSystemUser.getId());
..........
session.update(obj);
session.getTransaction().commit();
this.editable = editable;
}
catch (Exception e)
{
e.printStackTrace();
session.getTransaction().rollback();
}
}
......
private boolean editable = false;
public boolean isEditable()
{
return editable;
}
public void setEditable(boolean editable)
{
this.editable = editable;
}
}
当我打开编辑表单并单击按钮Edit System User
时,表单消失。可能是因为我渲染并执行它。如何在不关闭的情况下执行表单并在其下执行?
答案 0 :(得分:1)
示例代码在很多方面都很糟糕。有两点突出:
<f:ajax render=":form" execute=":form">
是多余的,甚至可能导致奇怪的行为OP很可能不知道(引自PrimeFaces showcase,强调我的)
的命令按钮强>
CommandButton使用ajax ,部分处理和蒙皮功能扩展了标准h:commandButton 。
所以commandBotton已经是ajax anabled并且不需要来hava a
<f:ajax render=":form" execute=":form">
在里面。这(很可能)使更新运行两次。一个@none(Understanding PrimeFaces process/update and JSF f:ajax execute/render attributes)和一个更新表单。第二个最有可能没有任何内容。但尝试(和调试)将使事情变得清晰。如果这不是答案,那么原因就不能在代码中看到,因此应该是[mcve]