p:ajax for locale change one click behind problem

[wikisky]

I'm trying to partially reload page on language change. Everything works fine, except that it is one step behind. I mean when I change first language to second, the page reloaded in first language, then when I change back - the page now reloaded in second one. Here the code:

Code: Select all

<f:view contentType="text/html" locale="#{sessionBean.locale}">
...........
<h:outputText value="#{sessionBean.language}"/>
<h:selectOneMenu id="language_select" value="#{sessionBean.language}">
   <f:selectItem itemLabel="English" itemValue="en"/>
   <f:selectItem itemLabel="Français" itemValue="fr"/>
   <p:ajax process="language_select" update="sidebar1 post_block footer" event="change"/>
</h:selectOneMenu>

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    public Locale getLocale() {
        if (locale==null) {
            FacesContext context = FacesContext.getCurrentInstance();
            ExternalContext ec=context.getExternalContext();
            locale=ec.getRequestLocale();
            if (locale==null) locale=Locale.ENGLISH;
        }
        return locale;
    }

    public void setLocale(Locale locale) {
        this.locale = locale;
        FacesContext.getCurrentInstance().getViewRoot().setLocale(locale);
    }

    public String getLanguage() {
        return getLocale().getLanguage();
    }

    public void setLanguage(String language) {
        setLocale(new Locale(language));
    }

Note, that I'm printing selected language at the beginning, and it does show that it changed in time, but all the renderings are still in previous language.
I tried to force locale "FacesContext.getCurrentInstance().getViewRoot().setLocale(locale);" - doesn't work. I probably have to somehow reload bundles or something?

[Oleg]

Hi,

Why do you change language in set-method? I would do it in valueChangeListener. This code works in my web app

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	/**
	 * This method is fired if the locale has been changed (see attribute valueChangeListener).
	 *
	 * @param vce ValueChangeEvent
	 */
	public void localeChanged(ValueChangeEvent vce)
	{
		Locale localeNew = (Locale) vce.getNewValue();

		FacesContext fc = FacesContext.getCurrentInstance();
		UIViewRoot viewRoot = fc.getViewRoot();

		if (viewRoot instanceof PartialViewRoot) {
			viewRoot = ((PartialViewRoot) viewRoot).getBase();
		}

		viewRoot.setLocale(localeNew);

		// force new loading of locales, themes and time zones because the language has been changed
		locales = null;
		themeNames = null;
		timeZones = null;
	}

The second strange thing is update="sidebar1 post_block footer". I would update the entire web application via redirect.

[wikisky]

Why do you change language in set-method? I would do it in valueChangeListener. This code works in my web app

Trust me I tried every method I could think of with my poor 2-weeks JSF experience. It didn't work. I just found the cause.
I was using in page

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<f:loadBundle basename="messages" var="msg"/>

. I found info that it is not recommended in JSF2 as it causing problems specifically in ajax calls. I had to set it in faces-config.xml:

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    <application>
        <resource-bundle>
            <base-name>messages</base-name>
            <var>msg</var>
        </resource-bundle>
    </application>

The second strange thing is update="sidebar1 post_block footer". I would update the entire web application via redirect.

I wanted to try cool looking in-page language switch.

[cagatay.civici]

wikisky, so you resolved your issue?

[wikisky]

Yes, the language does switch in page.
There are some issues with menu and submenu after I reload it by ajax - it stops highlighting and submenu doesn't pop up.
Didn't investigated it yet, but probably I will end up by reloading the whole page.

[cagatay.civici]

As I remember Menu and MenuBar does not like being updated with ajax, we haven't investigated what this happens yet.