JSF - Change panelGroup by using ajax calls - Beans, EL and?

I have to make a sort of switch of some panelGroup UI. About the view section, i made this :

<h:panelGroup layout="block" id="profile_content">
    <h:panelGroup layout="block" styleClass="content_title">
        Profilo Utente
    </h:panelGroup>

    <h:panelGroup rendered="#{selector.profile_page=='main'}">
        <ui:include src="/profile/profile_main.xhtml" />
    </h:panelGroup>

    <h:panelGroup rendered="#{selector.profile_page=='edit'}">
        <ui:include src="/profile/profile_edit.xhtml" />
    </h:panelGroup>

    <h:panelGroup rendered="#{selector.profile_page=='insert'}">
        <ui:include src="/profile/profile_articles.xhtml" />
    </h:panelGroup>
</h:panelGroup>

Now, to change this value, i written an exclusive JavaBean, called Selector :

@ManagedBean(name="selector")
@RequestScoped
public class Selector {
    @ManagedProperty(value="#{param.profile_page}")
    private String profile_page;

    public String getProfile_page() {
        if(profile_page==null || profile_page.trim().isEmpty()) {
            this.profile_page="main";
        }
        return profile_page;
    }
    public void setProfile_page(String profile_page) { this.profile_page=profile_page; }
}

So, right now succeeds my problem : when i change the "context" by using some h:commandButton, i'd like to use asynch call to the server. This is my Button Panel :

<h:commandButton value="EDIT">
    <f:ajax event="action" execute="???" render=":profile_content"/>
</h:commandButton>

<h:commandButton value="PM">
    <f:ajax event="action" execute="???" render=":profile_content"/>
</h:commandButton>

<h:commandButton value="ARTICLES">
    <f:ajax event="action" execute="???" render=":profile_content"/>
</h:command开发者_开发技巧Button>

I don't know what to put on execute, so that i edit the Beans value and i change the context by using render=":profile_content"

Hope this question is comprehendible. Forgive me about language :)

Cheers

---

Use f:setPropertyActionListener. You don't need to override the default of f:ajax's execute attribute (which is @this, the sole button).

E.g.

<h:commandButton value="EDIT">
    <f:setPropertyActionListener target="#{selector.profile_page}" value="edit" />
    <f:ajax event="action" render=":profile_content"/>
</h:commandButton>

Note that the Java Coding Conventions recommends CamelCase over under_score. I'd suggest to fix profile_page to be profilePage. This is Java, not PHP.