Parse, cloud code beforeDelete - swift

Question

Before I'm deleting my user I would like to remove some objects in another class. This works fine in Swift.
class func deleteAnonymousUserListSettings(completetion:(result:Bool, error:NSError!) -> Void){
var queryListSettings = PFQuery(className: "ListSettings")
queryListSettings.findObjectsInBackgroundWithBlock { (objects: [AnyObject]?, error: NSError?) -> Void in
if let objs = objects as? [PFObject] where error == nil {
PFObject.deleteAllInBackground(objs, block: { (success, error) -> Void in
if success{
completetion(result: success, error: error)
}
})
}
}
}
Now I would like to transfer this to cloudCode. It works approximately 1 out of 10 times but I don't know why or when it works and sometimes not.
Parse.Cloud.beforeDelete(Parse.User, function(request, response) {
var query = new Parse.Query('ListSettings');
query.find({
success: function(results) {
for (var i = 0; i < results.length; i+=1) {
results[i].destroy();
}
response.success(results);
},
error: function() {results
response.error("error");
}
});
});
Help, please.

Answer 1

Instead of deleting one by one, you can delete all of the object at once and return success if it is successful. You can do this via the below code blocks;
query.find().then(function (results)
{
Parse.Object.destroyAll(results);
response.success("Success");
},
function (error)
{
response.success("Error");
})
Hope this helps.Regards.

Answer 2

Here we go, this works for me.
Parse.Cloud.beforeDelete(Parse.User, function(request, response) {
var query = new Parse.Query('ListSettings');
query.find().then(function(results) {
return Parse.Object.destroyAll(results);
}).then(function() {
response.success();
}, function(error) {
response.error("Error removing ListSettings.");
});
});