Had a chance to try it out. The way Velocity accesses static methods
is described here:
http://velocity.apache.org/engine/releases/velocity-1.6.2/developer-guide.html#supportforstaticclassesFor Click you can do something like:
public void onInit() {
addModel("velocity", Velocity.class);
}
Then in your template you can access the resourceExists method as follows:
#if ($velocity.resourceExists("/xyz.htm"))
#parse(...)
#end
That said, the resourceExists method didn't work for me (not sure
why), so I ended up writing my own method:
public class Util {
public static void resourceExists(String resourceName) {
try {
Context context = Context.getThreadLocalContext();
// First check on the servlet context path
boolean hasTemplate =
context.getServletContext().getResource(resourceName) != null;
if (!hasTemplate) {
// Second check on the classpath
hasTemplate = ClickUtils.getResource(resourceName,
Util.class) != null;
}
} catch (MalformedURLException e) {
throw new RuntimeException(e);
}
return hasTemplate;
}
You can use it as follows:
public void onInit() {
addModel("util", Util.class);
}
Hope this helps.
kind regards
bob
On Thu, Aug 13, 2009 at 2:24 PM, Prem Kurian
Philip<
[hidden email]> wrote:
>> I haven't tested myself but isn't the templateExists function part of
>> the Velocity class?
>>
>> So you should do this instead:
>>
>> #if (Velocity.templateExists("empty.htm")
>> #end
>>
>> Also it seems as if templateExists has been deprecated in favor of
>> resourceExists.
>>
>
> Bob, thanks a lot for taking the time to reply.
>
> I did actually try this earlier (Velocity.templateExists as well as
> Velocity.resourceExists) and I was still getting the same parse error.
>
> I tried this:
> #if (Velocity.templateExists("template.htm") == true)
> #parse("template.htm")
> #end
>
> As well as this:
>
> #if (Velocity.resourceExists("template.htm") == true)
> #parse("template.htm")
> #end
>
> The error I am getting: Page Parsing Error
>
> Source: /border-template.htm
> Message: Was expecting one of: "[" , "{" , "(" , <WHITESPACE> ,
> <STRING_LITERAL> , "true" , "false" , <INTEGER_LITERAL> ,
> <FLOATING_POINT_LITERAL> , <IDENTIFIER> , "{" , <LOGICAL_NOT>
>
> Regards,
> Prem
>
>
--
http://incubator.apache.org/click/
