[mapguide-users] What is %24CurrentSelection???

[achectl]

Hi Chris,

I've tried to follow your script and try to modify a little of date.php as below:
<?php
   
    $mapName = "";
    $sessionId = "";
	$ID = "";
	$Area = "";
       
    try
    {
        // Initialize the web tier API
        MgInitializeWebTier("C:\Program Files\MapGuideOpenSource2.0\WebServerExtensions\www\webconfig.ini");
       
        // Read the map name and session ID
        GetRequestParameters();

        // Create a site connection
        $user = new MgUserInformation($sessionId);
        $siteConnection = new MgSiteConnection();
        $siteConnection->Open($user);
       
        // Create a resource service instance
        $resourceService = $siteConnection->CreateService(0);
               
        // Retrieve the selection
		$selection = new MgSelection($map, $selectionXml); 
        //$selection = new MgSelection();
        //$selection->Open($resourceService, $mapName);
       
        // Output the selection
        echo $selection->ToXml();
    }
    catch(MgException $e)
    {
        // Output error details
        echo "<Message>" . $e->GetMessage() . "</Message>";
		echo "<Details>" . $e->GetDetails() . "</Details>";
    }
       
       
    function GetParameters($params)
    {
        global $mapName;
        global $sessionId;
		global $ID;
		global $Area;

        $mapName = $params['MAPNAME'];
        $sessionId = $params['SESSION'];
		$ID = $params['ID'];
		$Area = $params['Area'];
		
		echo $mapName;
		echo $ID;
		echo $Area;
    }

    function GetRequestParameters()
    {
        if($_SERVER['REQUEST_METHOD'] == "POST")
            GetParameters($_POST);
        else
            GetParameters($_GET);
    }
?> 

After click the invokeURL command of the fusion layout, it prompts the error "Default49cb4916a1dfe$CurrentSelection$CurrentSelectionAn unclassified exception occurred.An unclassified exception occurred. Exception occurred in method new_MgSelection at line 12308 in file .\MgApi_wrap.cpp" of the new date.php window. 

The $ID & $Area is the key of the invokeURL.js. It seems that the proper value still can't to find! I think it should be something missing of the date.php. 

Thanks
Achectl



If your date.php file is on a separate server, it seems like a good idea to save the sample code in a local file, as you've done, and then make that script issue a subsequent request to date.php.

It looks like the SESSION parameter is not getting sent to your script. It could be a case issue - it might get sent as lowercase 'session' instead. Are you able to use Fiddler or Firebug to determine which parameters are actually getting sent to your script? I also remember seeing a defect where the parameters got sent twice, which caused problems.

If your InvokeUrl.js (in the fusion/widgets folder) contains a section like this:

    execute : function() {
        var url = this.sBaseUrl;
        //add in other parameters to the url here
        
        var map = this.getMap();
        var params = [];
        params.push('LOCALE='+Fusion.locale);
        params.push('SESSION='+map.getSessionID());
        params.push('MAPNAME='+map.getMapName());
        params = params.concat(this.additionalParameters);

try changing it to:

    execute : function() {
        var url = this.sBaseUrl;
        //add in other parameters to the url here

        var map = this.getMap();
        var taskPaneTarget = Fusion.getWidgetById(this.sTarget);
        var params = [];
        if ( taskPaneTarget == null ) {
            params.push('LOCALE='+Fusion.locale);
            params.push('SESSION='+map.getSessionID());
            params.push('MAPNAME='+map.getMapName());
        }
        params = params.concat(this.additionalParameters);

An alternative approach would be to fix the InvokeUrl.js file so that it handles the $CurrentSelection variable correctly, but that would require a bit of figuring out.

Chris.
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