Add pre-selected filter column

[vnasp]

Hello everyone,

I'm customizing a module from PS 1.7.5 and need that "state order" column loads pre-filtered. I mean, when I load the page, always it shows the orders with X state order, and then I can change for another state order. The page is very similar to Admin Order List.

1. I tried adding a where clause in the sql select, but then the filter only shows X state order (from the where clause), any another state order shows empty.

2. So I looking for a 'filter' command in column array, like filter pre select, filter begin, pre-selected, but I don't found it nothing yet.

I have this:

        'osname' => array(
            'title' => $this->l('Status'),
            'color' => 'color',
            'width' => 200,
            'type' => 'select',
            'list' => $statuses_array,
            'filter_key' => 'os!id_order_state',
            'filter_type' => 'int'