Step 5 - Modifying our 'Routes', Part 2 ( 'deleteDonation' & 'incrementVotes' )

The first thing we need to do is add a new function to allow us to find a single donation, so add the following to your routes/donations.js, replacing the getByValue function

router.findById = function(req, res) {

    var id = req.params.id;

    console.log('Getting Donation for Id: ' + id);

    Donation.findById(id, function(err,donation) {
        if (err)
            res.send(err);

            res.send(donation);
        });
}

We're using Mongoose's own 'findById', but this will make things easier for us later on.

Modifying Our Third Route - 'Delete a Donation'

Edit your routes/donations.js file and navigate to your existing 'deleteDonation' function.

Now, replace it with the following :

router.deleteDonation = function(req, res) {

    var donation = new Donation();

    var id = req.params.id;
    console.log('Deleting donation: ' + id);

    Donation.findByIdAndRemove(id, function(err) {
        if (err)
            res.send(err);

        router.findAll(req,res);
  });
}

Notice how we use the Mongoose 'findByIdAndRemove' function to retrieve and delete the object from the 'Model'.

Modifying Our Fourth Route - 'Increment Votes'

Again, edit your routes/donations.js file and navigate to your existing 'incrementVotes' function.

And replace it with the following :

router.incrementUpvotes = function(req, res) {

    var id = req.params.id;

    console.log('Incrementing votes for Id: ' + id);

    Donation.findById(id, function(err,donation) {
        if (err)
            res.send(err);

        donation.upvotes += 1;
        donation.save(function(err) {
            if (err)
                res.send(err);
            console.log('Votes Incremented: ' + id);
            //res.json({ message: 'Donation Added!', data: donation });
            router.findAll(req,res); 
            }); 

  });
}

Like last time, there's a bit more going on here, so make sure you understand the general jist of how this works. (But I'll explain in the labs if necessary?)

You may need to restart your server but if everything goes to plan, you might now be able to delete and 'upvote' donations from your mongodb database.