i faced with problem situation. I don't know even how to solve the problem. So i would like to get advice. i saved value of Column Portlet and value of nbZones GridContainer in MongoDB. My situation is that if i get value of Column and ROW Portlet and value of nbZones GridContainer in MongoDB, Portlet and GridContainer value was taken from the DB to the location of the original place of it?

my MongoDB Data

{
  "GridSeq":1,
  "nbZones":3,
  "Portlet":[
  {
     "row":1,
     "col":0
  }
 ]
}

i calculate row value following code.

 var perColumn=[];
 var id=portlet.get('id');
 var col = portlet.get('column');
 if (perColumn[col] !== undefined) {
     perColumn[col]++;
 } else {
     perColumn[col] = 0;
 }
 var row = perColumn[col];
 console.log('id:'+id + ",row: " + row + ",col: " + col);