columns:[[
..
{field:'type',title:'Course Type',
width:80,align:'right',
formatter:function(val,row,index){
return (val==0?"OL":(val==1?"Classroom":"WB"));
},
editor:{type:'combobox',
options:{name: 'type',
valueField: 'val',
textField: 'txt',
data: [{txt:'OL',val:'0'},{txt:'Classroom',val:'1'},{txt:'WB',val:'2'}]
}
}
}
]];