当用户返回表单时，如何告诉Facelets页面应加载什么对象？
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我遇到了一个问题，已经解决了，但是我觉得我的解决方案是一个糟糕的破解。有没有更好的办法？
我有一个页面，在该页面上放置了表单，该表单显示了某些对象的属性，例如示例（省略了明显的细节）。
Ticket.java：
@Entity
public class Ticket {
@Id
private Long id;
private String title;
private byte priority;
// Getters, setters...
}
@RequestScoped
public class TicketController {
private Ticket ticket = new Ticket();
// Getters, setters...
public String doUpdateTicket() {
Ticket t = ticketEJB.getTicketById(ticket.getId());
t.setTitle(ticket.getTitle());
t.setPriority(ticket.getPriority());
ticketEJB.updateTicket(t);
ticket = t;
return \"view.faces\";
}
}
<h:form>
<h:inputHidden value=\"#{ticketController.ticket.id}\" />
<h:panelGrid columns=\"2\">
<h:outputLabel value=\"ID\"/>
<h:outputLabel value=\"#{ticketController.ticket.id}\"/>
<h:outputLabel value=\"Title: \"/>
<h:inputText value=\"#{ticketController.ticket.title}\"/>
<h:outputLabel value=\"Priority: \"/>
<h:inputText value=\"#{ticketController.ticket.priority}\" />
<h:commandButton value=\"Submit\"
action=\"#{ticketController.doUpdateTicket}\" />
</h:panelGrid>
</h:form>
doUpdateTicket()
没有找到相关结果
已邀请:
2 个回复
襄挟款籍
<f:metadata> <f:viewParam name=\"id\" value=\"#{ticketController.id}\" /> <f:event type=\"preRenderView\" listener=\"#{ticketController.preLoad}\" /> </f:metadata> ...@ManagedBean @ViewScoped public class TicketController { private Long id; private Ticket ticket; @EJB private TicketEJB ticketEJB; public void preLoad() { ticket = ticketEJB.getTicketById(id); } public String doUpdateTicket() { ticketEJB.updateTicket(ticket); return \"view.faces\"; } // ... }<h:outputLabel value=\"#{ticketController.ticket.id}\"/><h:outputText value=\"#{ticketController.ticket.id}\"/>哭木算