Forms Primefaces-如何从另一个表单更新动态.xhtml表单
当我点击取消请求的链接时,我想动态更新我的表单,该表单包含commandLink表单,因为此记录在此表单中不再可见。这是我的密码:Forms Primefaces-如何从另一个表单更新动态.xhtml表单,forms,jsf,jsf-2,primefaces,Forms,Jsf,Jsf 2,Primefaces,当我点击取消请求的链接时,我想动态更新我的表单,该表单包含commandLink表单,因为此记录在此表单中不再可见。这是我的密码: <h:form id = "form"> <p:dataGrid id = "dataGrid" value="#{userRequestBean.userActiveRequests}" columns="1" var="userActiveRequest" selection="#{userRequest
<h:form id = "form">
<p:dataGrid id = "dataGrid" value="#{userRequestBean.userActiveRequests}" columns="1"
var="userActiveRequest" selection="#{userRequestBean.request}"
rowKey="#{userActiveRequest.id}">
<f:facet name="header">
My requests
</f:facet>
<h:panelGrid id="panelGrid">
<h:outputText value="#{userActiveRequest.title.toUpperCase()}" />
<h:outputText value="#{userActiveRequest.description}" />
<h:form rendered="#{not empty userActiveRequest.hiredAgency}">
<h:commandLink
value="Details for agency #{userActiveRequest.hiredAgency.tUser.name}"
action="agencyDetail?faces-redirect=true">
<f:setPropertyActionListener target="#{agencyBean.tAgency}"
value="${userActiveRequest.hiredAgency}" />
</h:commandLink>
</h:form>
**//HERE IS THE COMMANDLINK WHICH I MENTIONED**
<h:form rendered="#{empty userActiveRequest.hiredAgency}">
To cancel, click <p:commandLink
value="HERE" action="#{userRequestBean.cancelRequest()}"
update = "form:dataGrid:panelGrid">
<f:setPropertyActionListener target="#{userRequestBean.request}"
value="${userActiveRequest}" />
</p:commandLink>
</h:form>
<p:commandButton value="Details"
action="userRequestDetails?faces-redirect=true">
<f:setPropertyActionListener target="#{userRequestBean.request}"
value="${userActiveRequest}" />
</p:commandButton>
</h:panelGrid>
</p:dataGrid>
</h:form>
增加:
Java类的一部分:
private List<TRequest> userActiveRequests; // + get and set methods
public UserRequestBean(){
EntityManager em = HibernateUtil.getEntityManager();
Query query = em.createQuery("select r " +
"from TUser u join u.userRequests r where u.id = :userId and r.isActive = 'Y'");
query.setParameter("userId", Long.valueOf(11));
userActiveRequests = query.getResultList();
}
public void cancelRequest (){
EntityManager em = HibernateUtil.getEntityManager();
em.getTransaction().begin();
request.setIsCancelled(true);
request.setIsActive(false);
em.merge(request);
em.getTransaction().commit();
//remove the object from the List
userActiveRequests.remove(request);
}
正如Luiggi所说,嵌套表单是无效的 请参阅以下内容:
查看一下您的设计,看看您是否真的需要嵌套该内部表单,或者可以只使用部分ajax更新来满足您的需要。问题在于您正在嵌套表单,而这是无效的HTML。删除包装其他s的,将调用命令链接操作。我删除了outher,但它仍然给了我错误-找不到表达式为dataGrid:panelGrid的组件,该表达式引用自dataGrid:0:j_idt19:j_idt21。因此,现在真正的问题是,您正在尝试更新id无法识别的组件。为您的所有组件指定一个特定的ID,然后更新完整的组件ID。在这种情况下,删除顶部后,您的完整组件ID现在不会出现错误,但我取消的记录仍在dataGrid中。似乎更新不起作用,它不会重新刷新dataGrid。链接是删除操作还是应该更新数据库中状态的操作?您确定也在更新列表中存储的对象吗?