Parse Server Cloud Code - Update OR Create object - node.js

Question

I am using Parse Server on AWS and mLab with great success, except for my Cloud Code. The main issue is surrounding my previous code for Create OR Update an object. I used to do this by querying for a user pointer on the Favourites class. If a row contains a user pointer then I need to update its content, if it doesn't exist a row needs to be created.
Old Parse.com Code
Parse.Cloud.define("saveFavourites", function(request, response) {
console.log(request.params.favourites);
var Favourites = Parse.Object.extend("Favourites");
var query = new Parse.Query("Favourites");
query.equalTo('user', request.user);
query.first({
success: function(results) {
console.log(JSON.stringify(results));
console.log(results)
if (results === undefined) {
var favourites = new Favourites();
favourites.save({
user: request.user,
favourites: request.params.favourites
}, {
success: function(favourites) {
// The object was saved successfully.
},
error: function(favourites, error) {
// The save failed.
// error is a Parse.Error with an error code and message.
}
});
} else {
results.set("favourites", request.params.favourites);
results.set("userId", request.user.id);
results.save();
}
response.success(results);
},
error: function(error) {
error.message("favourites lookup failed");
}
});
});
New Parse Server Code
Parse.Cloud.define("saveFavourites", function(request, response) {
console.log('user is : ' + JSON.stringify(request.user));
var Favourites = Parse.Object.extend("Favourites");
var query = new Parse.Query("Favourites");
query.equalTo("user", request.user);
query.first({
useMasterKey: true
}, {
success: function(results) {
if (results && results.length > 0) {
console.log('running found');
favourites.set("favourites", request.params.favourites);
favourites.set("userId", request.user.id);
favourites.save();
response.success();
} else {
var favourites = new Favourites();
favourites.set("user", request.user);
favourites.set("favourites", request.params.favourites);
favourites.set("userId", request.user.id);
favourites.save();
response.success();
}
},
error: function(error) {
console.log(error.message);
}
});
});

Answer 1

Do not response unless callback finished. Set response.error on each Parse requests error.
Parse.Cloud.define("saveFavourites", function(request, response) {
console.log(request.params.favourites);
var Favourites = Parse.Object.extend("Favourites");
var query = new Parse.Query("Favourites");
query.equalTo('user', request.user);
query.first({
//is this query need masterKey?
useMasterKey: true,
success: function(results) {
console.log(JSON.stringify(results));
console.log(results)
if (results === undefined) {
var favourites = new Favourites();
favourites.save({
user: request.user,
favourites: request.params.favourites
}, {
success: function(favourites) {
// The object was saved successfully.
response.success(results);
},
error: function(favourites, error) {
// The save failed.
// error is a Parse.Error with an error code and message.
response.error(error);
}
});
} else {
results.set("favourites", request.params.favourites);
results.set("userId", request.user.id);
results.save(null, { useMasterKey: true }).then(response.success, response.error);
}
},
error: function(error) {
error.message("favourites lookup failed");
response.error(error);
}
});
});