Find map -> update map -> find user -> update user

Favourite it!

exports.favourite = function(req, res) {
  console.log(req.body);
      Map.findOne({_id: req.body.id}, function(err, map){
           if (!err) {
            map.update({favourited: req.body.plusone}, {upsert: true}, function(err) {
               if (err) {console.log("Error with incrementing favourite")}
                else {
                  if (!req.user) {
                    res.send("Please login to favourite this route")
                  }
                  else {
                    console.log(req.user);
                    User.findOne({_id: req.user._id}, function(err, user) {
                          if (err) { console.log("Error finding user")}
                          else {
                          user.update({$addToSet: {favourites: req.body.id}}, {upsert: true}, function(err) {
                                  if (err) {console.log("Error adding to favourites")}      
                                  else { res.send("Thank you for favouriting this route")}
                                  })
                          }
                      })
                  }

                }
            })

          }
    })
};