Transition to set locale

[breaux]

What's the simplest way to define a transition that switches the locale and returns to the current view-state? We do have the LocaleChangeInterceptor configured if that helps.

[boudewijn]

You call the flow you want to go to (or want to stay), and add &locale=<locale> to the url (if you've configured LocaleChangeInterceptor to read "locale"); the interceptor takes care of the rest.

[breaux]

What's the simplest way to do that from a transition? I'm sorry if I'm being thick here, but it's been a while since I last coded SWF, so it's possible something obvious is escaping me. All I can think of right now is to transition to another view-state that does this, but I was hoping instead for something that could be done right in the transition itself.

[boudewijn]

You can create a loginBean, and call it in your transition like this:

<transition on="login">
			<evaluate expression="loginBean.doLogin()"></evaluate>
		</transition>

The bean would have the following method:

public String doLogin() throws IOException, ServletException {
		ExternalContext context = FacesContext.getCurrentInstance()
				.getExternalContext();

		RequestDispatcher dispatcher = ((ServletRequest) context.getRequest())
				.getRequestDispatcher("/web/loginProcess");

		dispatcher.forward((ServletRequest) context.getRequest(),
				(ServletResponse) context.getResponse());

		FacesContext.getCurrentInstance().responseComplete();
		// It's OK to return null here because Faces is just going to exit.
		return null;
	}

(configure the spring login process as /web/loginProcess, as in the method)
The username should be called j_username and the password j_password.
Don't forget to add FORWARD in the Spring security filter like this:

	<filter-mapping>
		<filter-name>springSecurityFilterChain</filter-name>
		<url-pattern>/*</url-pattern>
		<dispatcher>FORWARD</dispatcher>
		<dispatcher>REQUEST</dispatcher>
	</filter-mapping>

This should do the trick to make use of the default configuration.

cheers

[breaux]

What I posted to StackOverflow:

This is not what I was seeking, but it's the only thing I found to do. That is, I created an action method to call from the transition:

<transition on="switchLanguage" validate="false">
<evaluate expression="myAction.switchLanguage"/>
</transition>

And

public Event switchLanguage(RequestContext context)
{
// get the "other" locale string itself from the current locale's resource bundle
Locale locale = context.getExternalContext().getLocale();
MessageSource ms = context.getActiveFlow().getApplicationContext();
String newLocaleString = ms.getMessage("lang.other", null, locale);

HttpServletRequest req = (HttpServletRequest) context.getExternalContext().getNativeRequest();
HttpServletResponse res = (HttpServletResponse) context.getExternalContext().getNativeResponse();

LocaleResolver localeResolver = RequestContextUtils.getLocaleResolver(req);
localeResolver.setLocale(req, res, StringUtils.parseLocaleString(newLocaleString));
return success();
}