h:commandLink conditional target

Question

I have a h:commandLink :

<h:commandLink value="" 
    actionListener="#{controller.authenticateAccount}" 
    style="text-decoration: none;" 
    target="#{controller.userNameGiven ? '_parent' : '' }">
        <img src="../images/Profile/authenticateCPButton.gif" border="0" style="padding-left: 2px;"/>
</h:commandLink>

Now controller.userNameGiven is a boolean field and is set to true if username given and otherwise set to false. The h:commandLink is present in a iframe and prior to this the target was set to _parent and then if the username is present then it was redirecting to a page in the same parent window but in other case the iframe was rendered in the parent page which is clearly a bug. Now after the target validation the redirected page is opening in that iframe, which is undesirable. What I am doing wrong?

Thanks and regards.

---

Edit 1:

I have changed the target to:

target="#{controller.target}"

where:

    public String getTarget() {
        return target;
    }

    public void setTarget(String target) {
        this.target = target;
    }    

and

if(this.userName != null && this.userName.trim().length()>0) {
            target = "_parent";
            FacesContext.getCurrentInstance().getExternalContext().redirect("./somepage");
} else {
            target = "";
}

But its still not working and the url somepage is opening in the iframe.

Answer 1

Move the logic into a bean method:

public class Controller
{
    // ...

    public boolean isUserNameGiven () { /* snip */ }

    public String getFooTarget()
    {
        return this.isUserNameGiven() ? "_parent" : "";
    }

    // ...
}