public function addColumn($columnId, $column) { if (isset($column['sortable']) && !isset($column['renderer']) && $column['sortable'] === FALSE) { if (isset($column['type']) && $column['type'] == 'action') { $column['renderer'] = 'ampgrid/adminhtml_catalog_product_grid_renderer_action'; } else { if (isset($column['options'])) { $column['renderer'] = 'ampgrid/adminhtml_catalog_product_grid_renderer_options'; } } } return parent::addColumn($columnId, $column); }