Catch "Failed to look up view" error and serve 404 - node.js

Question

I am currently routing every page to my pagesController that cannot be found in previous routes by including this line in routes.js:
this.match('/:page', { controller: 'pages', action: 'show' });
I had the idea to let my PagesController handle serving a 404 if not found:
PagesController.show = function() {
var page = this.param('page');
if(page != undefined){
page = page.replace(".html","");
try {
this.render("./"+page);
} catch(error){ //Failed to look up view -- not working at the moment =(
this.redirect({action : "404"});
};
}
return;
};
But my idea is failing. The error cannot be caught, so the fatal still gets served. Should I append a fn to the render call? With what arguments? How does it work? (/simple questions).

Answer 1

It might look something like this:
PagesController.show = function() {
var self = this;
var page = this.param('page');
if (page !== undefined) {
page = page.replace('.html', '');
this.render("./" + page, function(err, html) {
if (! err)
return self.res.send(html);
self.redirect({ action : '404' });
});
} else {
// this will probably never be called, because `page`
// won't be undefined, but still...
this.redirect({ action : '404' });
}
};