[postgis-users] Session and dynamic maps

[Ibrahim Khachab]

Hi,
I'm using pmapper with a sort of dynamic map viewing (I wrote a php code 
to create config and map files on the fly). The url the contained a "me" 
parameter to make an initial zoom.
I noticed that after the firs map was displayed the other ones had an 
initial zoom as the first one and thus not diaplaying the right area of 
the map.
I mad a lot of debug and I found two ways to "fix" this problem.
tThe first and simple one is, when you use different config files, to 
make the first if block in the config/__startup_config.php file to look like

if (isset($_REQUEST['config'])) {
     // Check for invalid GET variables
     if (preg_match("/\/|\./", $_REQUEST['config'])) exit();
     $config = trim($_REQUEST['config']);
     if ($config != $_SESSION['config']){
         unset($_SESSION["GEOEXT"]);
     }
}
The added lines are
     if ($config != $_SESSION['config']){
         unset($_SESSION["GEOEXT"]);
     }


The other one would work on any configuration and involves the 
pmap_setGeoExt() function in the incphp/map.php file.
The idea is to switch the first two if blocks making

if (isset($_SESSION["GEOEXT"])) {
....
   GEOEXT    code
...
  }elseif (isset($_SESSION['zoom_extparams'])) {
....
   zoom_extparams    code
...


looks like this


if (isset($_SESSION['zoom_extparams'])) {
....
   zoom_extparams    code
...
  }elseif (isset($_SESSION["GEOEXT"])) {
....
   GEOEXT    code
...
}

So the $_SESSION['zoom_extparams'] will have the precedence on the 
$_SESSION["GEOEXT"] one.


I hope this may help who may have the same problem that I had.

Ibrahim Khachab