Can't load waypoints and routes on Google Maps api v3 - php

Question

I want to display multiple directions with dragable waypoints and save each waypoints.
On my project I can click on the map to create the routes, generating a wayA point and a wayB point and draw a route between them. So, I can make multiple routes.
I can also save them on the database.
The problem is load this points on the map again fetching them on the database and drawing all on the map.
I have two pages, on index.htm you can draw your routes and save them, and on loady.htm you can load them on the map.
I tried somethings but without sucess, I will post my try here.
This is my resumed index.htm
var map, ren, ser;
var data = {};
var wayA = [];
var wayB = [];
var directionResult = [];
function goma() <---Initialize
{
google.maps.event.addListener(map, "click", function(event) {
if (wayA.length == wayB.length) {
wayA.push(new google.maps.Marker({
draggable: true,
position: event.latLng,
map: map
}));
} else {
wayB.push(new google.maps.Marker({
draggable: true,
position: event.latLng,
map: map
}));
ren = new google.maps.DirectionsRenderer( {'draggable':true} );
ren.setMap(map);
ren.setPanel(document.getElementById("directionsPanel"));
ser = new google.maps.DirectionsService();
ser.route({ 'origin': wayA[wayA.length-1].getPosition(), 'destination': wayB[wayB.length-1].getPosition(), 'travelMode': google.maps.DirectionsTravelMode.DRIVING},function(res,sts) {
if(sts=='OK') {
directionResult.push(res);
ren.setDirections(res);
} else {
directionResult.push(null);
} })
} }); }
function save_waypoints()
{
var w=[],wp;
var rleg = ren.directions.routes[0].legs[0];
data.start = {'lat': rleg.start_location.lat(), 'lng':rleg.start_location.lng()}
data.end = {'lat': rleg.end_location.lat(), 'lng':rleg.end_location.lng()}
var wp = rleg.via_waypoints
for(var i=0;i<wp.length;i++)w[i] = [wp[i].lat(),wp[i].lng()]
data.waypoints = w;
var str = JSON.stringify(data)
var jax = window.XMLHttpRequest ? new XMLHttpRequest() : new ActiveXObject('Microsoft.XMLHTTP');
jax.open('POST','process.php');
jax.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
jax.send('command=save&inventoresdegara='+str)
jax.onreadystatechange = function(){ if(jax.readyState==4) {
if(jax.responseText.indexOf('bien')+1)alert('Mapa Atualizado !');
else alert(jax.responseText)
}}
}
This is the resumed loady.htm with my try
var map, ren, ser;
var data = {};
var wayA = [];
var wayB = [];
var directionResult = [];
function goma() {
ren = new google.maps.DirectionsRenderer( {'draggable':true} );
ren.setMap(map);
ren.setPanel(document.getElementById("directionsPanel"));
ser = new google.maps.DirectionsService();
fetchdata();
function setroute(os)
{
var wp = [];
for(var i=0;i<os.waypoints.length;i++)
wp[i] = {'location': new google.maps.LatLng(os.waypoints[i][0], os.waypoints[i][3]),'stopover':false }
ser.route({ 'origin': wayA[wayA.length-1].setPosition(), 'destination': wayB[wayB.length-1].setPosition(), 'travelMode': google.maps.DirectionsTravelMode.DRIVING},function(res,sts) {
if(sts=='OK') {
directionResult.push(res);
ren.setDirections(res);
} else {
directionResult.push(null);
}
});
}
function fetchdata()
{
var jax = window.XMLHttpRequest ? new XMLHttpRequest() : new ActiveXObject('Microsoft.XMLHTTP');
jax.open('POST','process.php');
jax.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
jax.send('command=fetch')
jax.onreadystatechange = function(){ if(jax.readyState==4) {
try { setroute( eval('(' + jax.responseText + ')') ); }
catch(e){ alert(e); }
}}
}
This is my php file:
<?
if($_REQUEST['command']=='save')
{
$query = "insert into inventoresdegara set value='$data'";
if(mysql_query($query))die('bien');
die(mysql_error());
}
if($_REQUEST['command']=='fetch')
{
//$query = "select value from inventoresdegara";
$query = "SELECT value FROM inventoresdegara";
if(!($res = mysql_query($query)));
$rs = mysql_fetch_array($res,1);
die($rs['value']);
}
?>
This is a image from my database to you know how the information are saved
The only thing that I need to do is load this values to the map, please help me =).
Thanks !
After my try, the loady.htm was this on ser.routes
ser.route({'origin':new google.maps.LatLng(os.start.lat,os.start.lng),
'destination':new google.maps.LatLng(os.end.lat,os.end.lng),
'waypoints': wp,
'travelMode': google.maps.DirectionsTravelMode.DRIVING},function(res,sts) {
if(sts=='OK')ren.setDirections(res);
}

Answer 1

If the reason to saving waypoints is to reproduce the route they came from, you're better off saving the entire route and then showing it on the map without re-requesting the route again. See Displaying results of google direction web service without using javascript api
Otherwise, if you just want to get a fresh route from A to B through waypoints, your current approach of calling ser.route() with them is correct.