ui:repeat不适用于f:selectItem [英] ui:repeat doesn't work with f:selectItem

问题描述

我正在使用菜单上的icefaces select从用户列表中选择一个用户 我想为每个用户重复执行selectItem 这是我尝试过的:

i am using icefaces select on menu to select a user from list of users and i want to repeat the selectItem for each user here's what i tried:

<ice:selectOneMenu id="users">
    <ui:repeat value="#{user.getUserList()}" var="user">
        <f:selectItem itemLabel="#{user.name}" itemValue="#{user.id}"/>
    </ui:repeat>               
</ice:selectOneMenu> 

UserBean:

@Component("user")
@Scope("view")
Public class UserBean{

Public List<User> getUserList() throws Exception {
        return userService.getAllUsers();
    }

}

注意::UserBean不包含属性id，即它们存在于User实体中的名称. 请指教，谢谢.

NOTE: UserBean doesn't contains the properties id,name they exist in User entity. please advise, thanks.

推荐答案

The <ui:repeat> is an UI component while <f:selectItem> is a taghandler (like JSTL). Taghandlers runs during view build time before UI components which runs during view render time. So at the moment the <ui:repeat> runs, there is no means of a <f:selectItem>.

一个也是标签处理程序的<c:forEach>可以工作，但更好的方法是使用

A <c:forEach>, which is also a tag handler, would work, but much better is to use <f:selectItems> instead. Since JSF 2.0 it can take a collection and support the var attribute as well:

<ice:selectOneMenu id="users">
    <f:selectItems value="#{user.usersList}" var="userItem" 
        itemLabel="#{userItem.name}" itemValue="#{userItem.id}" />
</ice:selectOneMenu>

请注意，var属性不应与作用域中的现有bean冲突.

Note that the var attribute should not clash with an existing bean in the scope.

• selectOneMenu Wiki页面

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