I'm adding a column like so in
_prepareColumns() method of a class that extends
$this->addColumn('status', array( 'header' => $this->helper->__('Status'), 'width' => '20px', 'renderer' => 'namespace_modulename/adminhtml_renderer_status' ));
It doesn't have an
index and the values for this column are being shown properly in the grid but I am not able to filter because filtering needs a column in
select statement to exist.
How can I filter a custom column that its value is returned from a renderer and could be anything?