Reverse geocoding from google maps API - google-maps

Question

I use the Google Maps API to save a database of addresses in a point.
Came across a problem which is the third day I can not decide. Can you give me some advise.
I cycle runs through all the points, which are marked on the map, in which using geotsoder.geoсode recognize and and use ajax write this address in the database.
Example:
function saveAddress(marker_points)
{
var i = 0;
id = 0;
address = [];
var count = 0;
points = [];
for(i in marker_points)
{
var geocoder = new google.maps.Geocoder();
geocoder.geocode( {'address': marker_points[i]},function(results, status){
address = results[0].formatted_address;
});
$.ajax({
type: "POST",
url: "/user.view.location.phone_id-{/literal}{$iPhoneId}{literal}.html",
cache: false,
data: "address=" + address + "&location_point=" + marker_points[i],
dataType: "html",
async: false,
timeout: 5000,
success: function (data) {
}
});
}
}
But in Ajax passed last point, ie written in the database returned last address and the last point on which this address.
Could you tell me what could be the problem and how to solve it, because he had tried all the options, it does not work?

Answer 1

You can use function closure to associate the request with the response.
Example using geocoded addresses:
They function that gets closure on "i" is:
function geocodeAddress(i) {
geocoder.geocode({'address' : locations[i]},
function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
map.setCenter(results[0].geometry.location);
createMarker(results[0].geometry.location, i);
} else {
alert('Geocode was not successful for the following reason: '
+ status);
}
});
}

Answer 2

I think your script may sometimes call ajax method before getting response from geocoder.geocode. Try to put $.ajax method inside of
function(results, status){
address = results[0].formatted_address;
}
so that fragment of your code would look something like:
var marker_points = ["50.463425,30.508120","50.465822,30.514380","50.465317,30.515609"];
for(i in marker_points) {
codeAndSendAddress(marker_points[i]);
}
function codeAndSendAddress(point){
var mp = point.split(',');//Extract numbes from string
var latLng = new google.maps.LatLng(mp[0],mp[1]) // create latitude/logitude object
geocoder.geocode( { 'latLng': latLng}, function(results, status) {
if(status == google.maps.GeocoderStatus.OK) { make sure location was found
var geocodedAddress = results[0].formatted_address;
var geocodedLocationPoint = results[0].geometry.location;
$.ajax({
type: "POST",
url: "/user.view.location.phone_id-{/literal}{$iPhoneId}{literal}.html",
data: 'address='+geocodedAddress+
'&geocoded_location_point='+geocodedLocationPoint+
'&location_point='+point,
timeout: 5000,
success: function (data) {}
});
}
});
}