Is it that the column doesn't show up at all, or that it just doesn't show the image the way you like?
If it is the former, then perhaps you should consider using the 2nd parameter of the Dataface_RecordGrid constructor to specify the columns that should be visible.
If the latter, then you can add a cell filter for that column to specify how it should be rendered.
I don't have any examples off hand for cellFilters, but here is where it is called:
Generally just create a function to do the filtering:
function myFilter($row, $col, $value) {
return '<img src="'.$value.'"/>';
}
Then
$dataGrid->cellFilters['mycol'] = 'myFilter';
(But if myFilter is defined inside the current class it would be:
$dataGrid->cellFilters['mycol'] = array($this, 'myFilter');
It's a PHP callback...
Steve