jqGrid get row data on select -

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i need peices of data row on select, can send off. getting 'false' on teacher , student vars. teacherid id column grid.

   onselectrow: function () {         var $grid = $("#student-grid");         var rowdata = $grid.jqgrid('getrowdata', 'selrow');         var teacher = $grid.jqgrid('getcell', rowdata, 'teacherid');         var student = $grid.jqgrid('getcell', rowdata, 'studentid');          alert('student num is: ' + student + ' , teacher num is: ' + teacher);      }

edit add more info:

     colmodel: [          { name: 'studentid', index: 'studentid', key: false, hidden: true },          { name: 'teacherid', index: 'teacherid', key: true, hidden: true }, ... (other columns) ]

yes using loadonce: true , both using datatype json.


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