Parse Cloud Code: How to iterate a httpRequest? - facebook-graph-api

Question

What i'm doing is loading Ids from my Parse database and for each Id I want to call a httpRequest to Facebook Api. The problem is that httpRequest seems to not work when there is not a response.success (it ends the proccess) call inside itself.
This is what I have so far:
Parse.Cloud.define("hello", function(request, response) {
var query = new Parse.Query("Location");
query.find({
success: function(results) {
console.log(results);
for (var i = 0; i < results.length; ++i)
var locationId = results[i].get("locationId");
console.log(locationId);
Parse.Cloud.httpRequest({
url: 'https://graph.facebook.com/v2.2/'+locationId+'/events?access_token='+accessToken,
success: function(httpResponse) {
console.log(httpResponse.data);
response.success("result");
},
error:function(httpResponse){
console.error(httpResponse.message);
response.error("Failed to login");
}
});
...
Any ideas?

Answer 1

I'm not the most up on my javascript, but I'm pretty sure this is the concept you're looking for. It's possible better solutions exist.
var totalResults = results.length;
var completedResults = 0;
var completion = function() {
// Because you're doing multiple requests, you'll need to figure out how you determine success/failure. ie: Are any failures considered an overall failure? Do you want to pass a more detailed success?
response.success("Finished");
};
for (var i = 0; i < totalResults; ++i)
var locationId = results[i].get("locationId");
console.log(locationId);
Parse.Cloud.httpRequest({
url: 'https://graph.facebook.com/v2.2/'+locationId+'/events?access_token='+accessToken,
success: function(httpResponse) {
completedResults++;
console.log(httpResponse.data);
if (completedResults == totalResults) {
completion();
}
},
error:function(httpResponse){
completedResults++;
console.error(httpResponse.message);
if (completedResults == totalResults) {
completion();
}
}
});
}
// ...