Filter admin grid with custom render values Magento - magento

Question

i have created a custom grid in which one of the columns i have render
my custom date.On the basis of data i am returning
yes or no
like below
public function render(Varien_Object $row)
{
$currentruleid = $this->getRequest()->getParam('id');
$value = (int)$row->getData($this->getColumn()->getIndex());
$read = Mage::getSingleton('core/resource')->getConnection('core_read');
$write = Mage::getSingleton("core/resource")->getConnection("core_write");
$query = "SELECT exclusive_coupon_id FROM mutually_exclusive
WHERE rule_id ='$currentruleid' AND exclusive_coupon_id ='$value' ";
$result = $read->query($query);
$affected_rows = $result->rowCount();
if($affected_rows > 0){
return 'Yes';
}
else{
return 'No';
}
}
and in grid my column code is
$this->addColumn('', array(
'header' => Mage::helper('salesrule')->__('Exclusive'),
'index' => 'coupon_id',
'width' => '100',
'type' => 'options',
'options' => array(
Mage::helper('adminhtml')->__('No'),
Mage::helper('adminhtml')->__('Yes')
),
'renderer' => 'adminhtml/promo_quote_edit_tab_exclusivecoupons_grid_column_renderer_used',
));
my renderer is returning accurate data
and its showing in columns
i need to filter also with yes or no. But filtering is not working.
Can you please suggest me how can i do this.
thanks

Answer 1

i have check that but my renderer is not any direct field , its a custom data like below is my renderer function
public function render(Varien_Object $row)
{
$currentruleid = $this->getRequest()->getParam('id');
$value = (int)$row->getData($this->getColumn()->getIndex());
$read = Mage::getSingleton('core/resource')->getConnection('core_read');
$write = Mage::getSingleton("core/resource")->getConnection("core_write");
$query = "SELECT exclusive_coupon_id FROM mutually_exclusive
WHERE rule_id ='$currentruleid' AND exclusive_coupon_id ='$value' ";
$result = $read->query($query);
$affected_rows = $result->rowCount();
if($affected_rows > 0){
return 'Yes';
}
else{
return 'No';
}
}