Where should I assign res.redirect

[otogen]

Hi, I am a super beginner about Node.js and Express

facebook-template-nodejs example works fine, then I would like to add res.redirect('/AnotherPage') when pushed a button. But I can not get solution. Because your code:

app.get('/',handle_facebook_request);
app.post('/',handle_facebook_request);

I wonder if I should write like as:

function handle_facebook_request(req,res){

if(req.param('button')){
res.redirect('/AnotherPage');
}
....
});

But I think it is wrong. Where should I assign res.redirect?

In case of pushed button, I always write as:

app.post('/', function(req,res){
if(req.param('button')){
res.redirect('/AnotherPage');
}
});

But I am not sure about your example case.

Thank you for your thoughts !