[mapguide-users] change layer definition runtime

Mark Chan makoychan at yahoo.com
Tue Sep 6 21:08:33 PDT 2016

Thanks Jackie, 
I think i got the gist, but will this also work with fusion? I am currently using the fusion templates. I was wondering if i could also do this with .net to rebuild the mapdefinition or layer definition.
Thanks for the response, im a bit stuck on this.

Sent from Yahoo Mail on Android 
  On Wed, Sep 7, 2016 at 12:03 AM, Jackie Ng<jumpinjackie at gmail.com> wrote:   You have to manipulate MgMap/MgLayer objects, so you have to use a
server-side script. It doesn't have to be .net. It could be in Java or PHP.
But it has to be one of the 3 languages which can work with the MapGuide Web

Your script needs to take in mapname/sessionid and do the following:

 - Opens the MgMap from the mapname
 - Finds the matching MgLayer in the map's layer collection by its layer
 - Make a new MgLayer that points to your new layer definition
 - Replace the matching MgLayer with your new MgLayer
  - Insert the new MgLayer to the layer collection at the matching index of
the old MgLayer
  - Remove the old MgLayer from the layer collection
 - Save the map state and trigger a map refresh back on the client-side

- Jackie

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