[ExtJS] Add Custom CSS Class to Grid Cell

You can make Ext JS 5 gird cell more pretty by applying twitter bootstrap.css to grid cell. It look like:

All you have to do is override the renderer function which returns a span element with bootstrap's label css class.
  header: 'Status',
  dataIndex: 'status',
  width: 100,
  renderer: function(value, meta, record) {
    var cls;
    if (value === 'Success') {
      cls = 'label label-success';
    } else if (value === 'Failure') {
      cls = 'label label-important';
    } else if (value === 'Processing') {
      cls = 'label label-warning';
    return Ext.String.format('<span class="{0}">{1}</span>', cls, value);
The code above is tested with Ext JS 5.0.1.