posting row_id with URL: when expanding jqgrid to load subgrid - jqgrid

Question

I m trying to load a jqgrid as a subgrid by posting parent row key (dept_id) to url:'sub_grid_load_dept.php', when expanding grid.
But have no idiea how to do it in a simple way.
here is my code
jQuery("#grid-dept").jqGrid({
url:'grid_load_dept.php',
datatype: "xml",
colNames:['dept id','dept prefix','dept name'],
colModel:[
{name:'dept_id',index:'dept_id', width:200, editable: true},
{name:'dept_prefix',index:'dept_prefix', width:200, editable: true},
{name:'dept_name',index:'dept_name', width:200, editable: true}
],
loadonce:false,
mtype: "POST",
pager: '#grid-dept-pager',
sortname: 'dept_id',
sortorder: "asc",
editable: true,
caption: "department",
editurl:"grid_edit_dept.php",
subGrid: true,
subGridRowExpanded: function(subgrid_id, row_id)
{
var subgrid_table_id;
var pager_id;
subgrid_table_id = subgrid_id+"_t";
pager_id = "p_"+subgrid_table_id;
$("#" + subgrid_id).html("<table id='"+subgrid_table_id+"' class='scroll'></table><div id='"+ pager_id +"' class='scroll'></div>");
$("#" + subgrid_table_id).jqGrid({
url:'sub_grid_load_dept.php',
datatype: "xml",
colNames: ['id','dept_id','office_id','dept_head','date_from','date_to','remarks'],
colModel:
[
{name:"id",index:"id",width:80,key:true, editable:true},
{name:"dept_id",index:"dept_id",width:130, editable:true},
{name:"office_id",index:"office_id",width:80,align:"right", editable:true},
{name:"dept_head",index:"dept_head",width:80,align:"right", editable:true},
{name:"date_from",index:"date_from",width:100,align:"right", editable:true},
{name:"date_to",index:"date_to",width:100,align:"right", editable:true},
{name:"remarks",index:"remarks",width:100,align:"right", editable:true}
],
caption: "Department Details",
mtype: "POST",
sortname: 'id',
sortorder: "asc",
editable: true,
pager:pager_id,
editurl:"sub_grid_edit_dept.php"
});
jQuery("#"+subgrid_table_id).jqGrid('navGrid',"#"+pager_id,{edit:true,add:true,del:false,search:true,refresh:true})
}
What I mean is how to post 'row_id' in subGridRowExpanded: function(subgrid_id, row_id)
by including in URL: proterty.maybe as an array.

Answer 1

I have found Solution:
[http://stackoverflow.com/questions/12823591/how-to-pass-the-selected-row-id-to-the-subgrids-url-in-jqgrid][1]
Used postDATA:An associative array which appends directly to the url.
postData: {prodcutid: row_id}