How to add a new column to product grid?

[Augustin]

Hi Guys!
How can I add a new column to the grid of products, please?
I need to have the product id showing in the grid, as well.
There is an older post from 2013 [http://forum.abantecart.com/index.php/topic,1433.msg5585.html#msg5585] with the same question, but without a solution 
Thank you very much!

[abolabo]

Grid consist of three controllers.
1. Page controller in your case pages/catalog/product.php
2. common/listing_grid.php - common controller that builds grid wrapper html.
3. Response controller that  returns row cells for grid by ajax.

To add column you should to  add  column into grid definition and add column into response.
1. you can change grid definitions with hook

Code Select Expand

public function onControllerCommonListingGrid_InitData(){
$that =& $this->baseObject;
$that->loadLanguage('reward_points/reward_points');
$data = &$that->data;
if($data['table_id'] == 'product_grid'){

//your code here
$data['colNames'][] = 'your column name';
$data['colModel'] = array(
            array(
                'name'     => '****',
                'index'    => '****',
                'align'    => 'center',
                'width'    => 65,
                'sortable' => false,
                'search'   => false,
            );
                }
}

2. then change response

Code Select Expand

public function onControllerResponsesListingGridProduct_UpdateData()
{
$that =& $this->baseObject;
$response =& $that->data['response'];
foreach($response->rows as &$row){
      $row['cell'][] = 'ffffff';
}

}

[Augustin]

Thank you very much, Abolabo!