Digging through the code it seems there is an attribute for setting html attributes to the generated tag using the imageOptions
and to set attributes on generated td cell tag we can use the htmlOptions
array from the base clase
/**
* TbImageColumn widget class
*
* @package booster.widgets.grids.columns
*/
class TbImageColumn extends CGridColumn
{
/**
* @var array the HTML options of the image tag
*/
public $imageOptions = array();
so to limit image width to 50px the column should be modified to
.....
array(
'class'=>'bootstrap.widgets.TbImageColumn',
'imagePathExpression'=>'$data->getImage("large")',
'headerHtmlOptions'=>array('style'=>'min-width: 50px;'),
'imageOptions'=>array('width'=>'50px'),
'usePlaceKitten'=>false,
),
.....