InternalResourceViewResolver and mobile views

In Keith Donalds blog post about Spring Mobile (http://blog.springsource.com/2010/11...n-development/) I found this part interesting:


Finally, a Tiles-based page layout that changes if the device is a mobile device:

<definition name="page" templateExpression="/WEB-INF/layouts/${currentDevice.mobile ? 'mobile/' : 'standard/'}page.jsp" />

I like to do something similar with a InternalResourceViewResolver in my mvc config xml.

<bean class="org.springframework.web.servlet.view.Intern alResourceViewResolver" prefix="/WEB-INF/views/" p:suffix=".jsp" />

This because I'm not using Tiles but plain JSP's (decorated using SiteMesh).

Can I use the expression like ${currentDevice.mobile ? 'mobile/' : 'standard/'} also in combination with a InternalResourceViewResolver.

Bases on the currentDevice.mobile I want to render
index.jsp (for desktop) or index.iphone.jsp or perhaps index.android.jsp.

Unfortunately InternalResourceViewResolver does not support view template expressions, it only allows a static prefix and suffix values to be injected. You could implement your own ViewResolver that would do this, perhaps even a special subclass or composite of InternalResourceViewResolver. ViewResolver is passed the HttpServletRequest and from the request you can obtain the currentDevice as a request attribute. You can also get at RequestAttributes via the RequestContextHolder thread local.

Keith

Probabably a DeviceAwareInternalResourceViewResolver in Spring Mobile core would have benefit for everybody. Would be a feature request I guess.

Yeah, I suggested this in a comment here: http://blog.springsource.com/2010/12...comment-181442.