[Cartoweb-users] how to edit the X and Y coordonates from a point with the "edit" plugin

[marie-line romanens]

Hello,
I try to modify the "edit" plugin for CW3 and I'm completely blocked.
I want to give my users the ability to edit the X and Y coordonates from a point. 
I found how to retrive the values into the differents input fields when I choose the "EDIT tool"(the arrow one) but it seems it's coming right from the mapfile ('edit_attributes' 'id,date_ouverture|string,requerant|string,the_geom|string,... in the METADATA zone in my layer definiton) and my problem is that I'm not able to use postGis functions (such as X(geometry) y(geometry or astext(geometry)) in that call.
By the way, is there a place where I can modify the postGIS request ?
Marie
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