[mapguide-users] How to get selected area information in mapguide

[nekad]

hm, i don't know if there is selection xml in $_POST['SELECTION']
 
how can i check it?

i just follow the tutorial by getting MgSelection with $_POST['SELECTION']
parameter
to enable selection in map area, i just checklist the options 'Features on
Layer are selectable' in mapguide maestro...


Jackie Ng wrote:
> 
> Are you sure there is selection xml in $_POST['SELECTION'] ?
> 
> - Jackie
> 
> 
> nekad wrote:
>> 
>> i have included constants.php
>> 
>> and there is no problem with MgServiceType anymore...
>> 
>> but, now i got the problem in finding the information of selected area...
>> 
>> when i run this code
>> $selection = new MgSelection($map, $_POST['SELECTION']); 
>> $layers = $selection->GetLayers();
>> 
>> it returns nothing, seems like i don't select any area on the map?
>> can you help me?
>> 
>> Jackie Ng wrote:
>>> 
>>> PHP does not support enums, so all the mapguide constants like
>>> MgServiceType, MgResourceType, etc are stored and defined in the
>>> constants.php file in your mapviewerphp directory.
>>> 
>>> Have you included this file?
>>> 
>>> - Jackie
>>> 
>>> 
>>> nekad wrote:
>>>> 
>>>> Hey guys..
>>>> I'm newbie in GIS world
>>>> I'm using Mapguide  and mapguide maestro 1.0.9
>>>> 
>>>> What i want is,
>>>> when user click a selected area, then they can right click and choose
>>>> the link i provided, let say "ViewData"
>>>> 
>>>> when user click ViewData, then it will show a popup window which
>>>> display relevant information of selected area...
>>>> 
>>>> But, my problem is, I don't know how to get the information..
>>>> 
>>>> I have coded by following the sample,
>>>> $args = ($_SERVER['REQUEST_METHOD'] == 'POST') ? $_POST : $_GET;	
>>>>     $sessionId = $args['SESSION'];
>>>> 	echo $sessionId."<br>";
>>>>     $mapName = $args['MAPNAME'];
>>>> 	echo $mapName."<br>";
>>>>     try
>>>>     {
>>>>       // Initialize the Web Extensions and connect to the Server using
>>>>       // the Web Extensions session identifier stored in PHP session
>>>> state.
>>>> 		
>>>>       MgInitializeWebTier ($webconfigFilePath);
>>>> 	  
>>>> 	  $userInfo = new MgUserInformation($sessionId);
>>>> 	  //$userInfo = new MgUserInformation("Administrator", "admin");
>>>> 	  echo "USER";
>>>>       $siteConnection = new MgSiteConnection();echo "CON";
>>>> 	  $siteConnection->Open($userInfo);echo "open";
>>>> 	  $resourceService =
>>>> $siteConnection->CreateService(MgServiceType::ResourceService); echo
>>>> "resource";
>>>> 
>>>> when i run it, popwindow will display echo till "CON", but "resource"
>>>> will not shown...
>>>> what is the problem?
>>>> somebody can help me the simple way to do my needs?
>>>> 
>>>> thx
>>>> 
>>> 
>>> 
>> 
>> 
> 
> 

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