arrays - Handling input arrays in Express forms?

Question

Let's say I have to edit a batch of objects of the same type on the same page:

//-jade
form(action='', method='POST')
    for each message_id in messages_ids
        input(type='text', name='message', id='#{message_id}')
        input(type='text', name='author',  id='#{message_id}')
    input(type='submit', value='Send')

I know I wont be able to process such form on backend 'cause of id -- it wont be sent to backend. However, is there a way to do it? I'd like to get something like this on backend:

//js
for (var i = 0; i <= req.body.message.length; i++) {
    console.log (
        'ObjectID: ' + req.body.message[i].id, //-? null, just to show what I'm trying to get
        'Message: '  + req.body.message[i],
        'Author: '   + req.body.author[i]
    );
}

It's pseudocode (it wont work). So, any ideas?

P.S. I'm getting how to do this without AJAX