How can i add custom multi option Attribute in sales order grid like select warehouse and able to edit on the grid itself

Question

I need to add custom multi selection option for admin purpose, like the ordered products currently available in which location warehouse. Its display like both inside of the order page and Sales->order-> Grid

//custom code
$this->addColumn('warehouse ', array(
    'header'    => Mage::helper('sales')->__('warehouse'),
    'index'     => 'warehouse',
    'type'      => 'text',
    'width'     => '70px',
    'sortable'  => false,
    'filter'    => false,
     'renderer' => 'Mage_Adminhtml_Block_Sales_Order_Renderer_Productatt',
));

But It display only Column Name, how can i display with values,

Output:

Note: After placing the order the admin manually select the warehouse right after its display inside the object.

Answer 1

I've been using BL Custom Grid for years and it will do exactly what you need.

https://github.com/iplaydu/BL_CustomGrid

It provides you with an option to add any custom attribute and even extend the each and every grid to your liking (especially for product grid). If you have some grids already extended then you also have an option to only rewrite the ones you want.

PS. Don't go for the latest version as it doesn't work on some instances, I use 1.9.2.