Get Lat Long

gistfile1.js

var search_for_address = function(element, o, e_lat, e_lon) {
    var address = $('#id_address_1').val() + ', '
        + $('#id_city option:selected').text() + ', '
        + $('#id_postcode').val();
    var gc = new google.maps.Geocoder();
    var request = {
        address: address
    }
    gc.geocode(request, function(result, status) {
        if (status != 'OK') {
            alert('Failed to find a match.');
            return false;
        }
        result = result[0];
        alert('Found match: Address "' + result.formatted_address
            + '", setting marker to location.');
        o.marker.setPosition(result.geometry.location);
        var lat = o.marker.getPosition().lat();
        var lng = o.marker.getPosition().lng();
        e_lat.val(lat);
        e_lon.val(lng);
        recenter_map(o.map, lat, lng);
    });
}
var init_getlatlong = function(o, e_lat, e_lon) {
    var map_row = $('<div/>', {
        class: 'form-row',
        style: 'height: 300px'
    });
    var map_container = map_row[0]
    e_lon.closest('div.form-row').after(map_row);
    var old_lat = e_lat.val() || false;
    var old_lon = e_lon.val() || false;

    var old_point = new google.maps.LatLng(0,0);
    var map_options = {
        scrollwheel: false,
        center: old_point,
        mapTypeId: google.maps.MapTypeId.ROADMAP,
        zoom: 1,
    };
    o.map = new google.maps.Map(map_container, map_options);

    recenter_map(o.map, old_lat, old_lon);

    o.marker = new google.maps.Marker({
        position: old_point,
        map: o.map,
        draggable: true,
    });
    google.maps.event.addListener(o.marker, 'dragend', function() {
        e_lat.val(o.marker.getPosition().lat());
        e_lon.val(o.marker.getPosition().lng());
    });
};

var recenter_map = function(map, lat, lon) {
    if (lat && lon) {
        map.setZoom(14);
        map.setCenter(new google.maps.LatLng(lat, lon))
    } else {
        map.setZoom(1);
        map.setCenter(new google.maps.LatLng(0, 0));
    }
}

$(function() {
    var o = {};
    var e_lat = $('input[name=latitude]');
    var e_lon = e_lat.closest('div.form-row').next().find('input');
    if (e_lat.length > 0) {
        init_getlatlong(o, e_lat, e_lon);
    }
    $('#id_city').on('change', function(event) {
        var lat = e_lat.val() || false;
        var lon = e_lon.val() || false;
        if (!lat || !lon) {
            var gc = new google.maps.Geocoder();
            gc.geocode({
                address: $('#id_city option:selected').text(),
            }, function(result, status) {
                if (status != 'OK') {
                    return false;
                }
                result = result[0];
                o.marker.setPosition(result.geometry.location);
                recenter_map(
                    o.map,
                    o.marker.getPosition().lat(),
                    o.marker.getPosition().lng()
                );
            });
        }

    });
    if ($('#id_address_1').length > 0) {
        var search_button = $('<a/>', {
            text: 'Search for accommodation address...',
            href: 'javascript:void(0)'
        });
        var button_row = $('<div/>', {
            class: 'form-row',
        });
        button_row.prepend(search_button);
        search_button.on('click', function(event) {
            event.preventDefault();
            search_for_address($(this), o, e_lat, e_lon);
        });
        e_lon.closest('div.form-row').after(button_row);
    }
});