Google Geolocation on beforeSave - parse-platform

Question

I'm trying to do Geolocation using Google Maps API on beforeSave event for Parse Cloud. The problem is httpRequest isn't triggered between the process.
Here's my code:
Parse.Cloud.beforeSave('SearchList', function (request, response) {
if ( ! request.object.isNew())
response.success();
var SearchList = Parse.Object.extend('SearchList');
var query = new Parse.Query(SearchList);
query.equalTo('Id', request.object.get('Id'));
query.first({
success: function (entry) {
if (entry) {
var address = request.object.get('Street1') + ', ' + request.object.get('Street2') + ', ' + request.object.get('Street3') + ', ' + request.object.get('Suburb') + ', ' + request.object.get('State') + ', ' + request.object.get('Postcode');
for (var attr in request) {
entry.set(attr, request[attr]);
}
entry.set('Address', address);
if (request.object.get('Type') === 'Bus') {
address = request.object.get('Street1') + ', ' + request.object.get('State');
console.log('Bus Address: ' + address);
Parse.Cloud.httpRequest({
method: 'POST',
url: 'https://maps.googleapis.com/maps/api/geocode/json',
params: {
address : address,
key: 'my-api-key'
},
success: function(httpResponse) {
var response = httpResponse.data;
if (response.status === 'OK') {
var langLat = response.results[0].geometry.location;
console.log(langLat);
entry.set('Location', new Parse.GeoPoint({ latitude: Number(langLat.latitude), longitude: Number(langLat.longitude) }));
entry.save();
response.error('Updated Existing Entry');
}
},
error: function(httpResponse) {
entry.set('Location', null);
entry.save();
response.error('Updated Existing Entry');
}
});
} else {
entry.set('Location', new Parse.GeoPoint({ latitude: Number(request.object.get('Latitude')), longitude: Number(request.object.get('Longitude')) }));
entry.save();
response.error('Updated Existing Entry');
}
} else {
response.success();
}
},
error: function (err) {
response.error('Could not validate uniqueness for the Id object.');
}
});
});
So what my code does is during save, I checked the entry if it already existed in the database. If it exist I simple update its values and then return a response.error telling parseObject.save to not continue to save the data since it already existed, else I return a response.success telling parseObject.save to continue saving the data. So during this process there are some data who don't have lat-long values, so I have to check whether they have lat-long, if they don't I wanted to do a Geolocation query using the entry's address w/ Google Maps API to retrieve the lat-long values.
Any ideas on how I can execute Geolocation using Google Maps API during beforeSave?
Thanks

Answer 1

When you call reaponse success or error you're signalling that the function is complete, so anything after that isn't guaranteed to complete, especially if it's asynchronous.
You should make the asynchronous request and update the passed object and then return success to save it.