[SOLVED] Magento Set discount code for specific product on fly

Thanks in advance..

As in my previous question i have set the discount code for the product on fly its working fine but i want to apply this rule for specific product only is this possible by changing previous code.

please help me...

Thanks, Jitendra

for your information the code is here....

function generateUniqueId($length = null)
    {
        $rndId = crypt(uniqid(rand(),1));
        $rndId = strip_tags(stripslashes($rndId));
        $rndId = str_replace(array(".", "$"),"",$rndId);
        $rndId = strrev(str_replace("/","",$rndId));
            if (!is_null($rndId)){
            return strtoupper(substr($rndId, 0, $length));
            }
        return strtoupper($rndId);
    }
    /* create unique coupan code */

        $productId  = (int) $this->getRequest()->getParam('id'); 
        $discountprice=$_POST['product']['discountprice']; 
        $model = Mage::getModel('salesrule/rule');
        $couponCode=generateUniqueId(8);
        $model->setName($couponCode);
        $model->setDescription('Discount coupon for Surger.');
        $model->setUsesPerCoupon(1);
        $model->setUsesPerCustomer(1);
        $model->setCustomerGroupIds('0,1');
        $model->setIsActive(1);
       // $model->setConditionsSerialized('a:6:{s:4:\"type\";s:32:\"salesrule/rule_condition_combine\";s:9:\"attribute\";N;s:8:\"operator\";N;s:5:\"value\";s:1:\"1\";s:18:\"is_value_processed\";N;s:10:\"aggregator\";s:3:\"all\";}');
        //$model->setActionsSerialized('a:6:{s:4:\"type\";s:40:\"salesrule/rule_condition_product_combine\";s:9:\"attribute\";N;s:8:\"operator\";N;s:5:\"value\";s:1:\"1\";s:18:\"is_value_processed\";N;s:10:\"aggregator\";s:3:\"all\";}');
        $model->setStopRulesProcessing(0);
        $model->setIsAdvanced(1);
       // $model->setProductIds($productId);
        $model->setSortOrder('0');
        $model->setSimpleAction('by_percent');
        $model->setDiscountAmount($discountprice);
        $model->setDiscountStep(0);
        $model->setSimpleFreeShipping(0);
        $model->setCouponType(2);
        $model->setCouponCode($couponCode);
        $model->setUsesPerCoupon(1);
        $model->setTimesUsed(0);
        $model->setIsRss(0);
        $model->setWebsiteIds('1');
        $model->save();

Here is the perfect code for applying discount to specific product..I found the solution..This code is working fine for applying discount to specific product.

function generateUniqueId($length = null)
    {
        $rndId = crypt(uniqid(rand(),1));
        $rndId = strip_tags(stripslashes($rndId));
        $rndId = str_replace(array(".", "$"),"",$rndId);
        $rndId = strrev(str_replace("/","",$rndId));
            if (!is_null($rndId)){
            return strtoupper(substr($rndId, 0, $length));
            }
        return strtoupper($rndId);
    }
    /* create unique coupan code */
        $productId  = (int) $this->getRequest()->getParam('id'); 
        $sku=$this->getRequest()->getParam('sku');
        $discountprice=$_POST['product']['discountprice']; 
        $model = Mage::getModel('salesrule/rule');
        $couponCode=generateUniqueId(8);
        $model->setName($couponCode);
        $model->setDescription('Discount coupon for Surger.');
        $model->setUsesPerCoupon(1);
        $model->setUsesPerCustomer(1);
        $model->setCustomerGroupIds('0,1');
        $model->setIsActive(1);
       // $model->setConditionsSerialized('a:6:{s:4:\"type\";s:32:\"salesrule/rule_condition_combine\";s:9:\"attribute\";N;s:8:\"operator\";N;s:5:\"value\";s:1:\"1\";s:18:\"is_value_processed\";N;s:10:\"aggregator\";s:3:\"all\";}');
        //$model->setActionsSerialized('a:6:{s:4:\"type\";s:40:\"salesrule/rule_condition_product_combine\";s:9:\"attribute\";N;s:8:\"operator\";N;s:5:\"value\";s:1:\"1\";s:18:\"is_value_processed\";N;s:10:\"aggregator\";s:3:\"all\";}');
        $model->setStopRulesProcessing(0);
        $model->setIsAdvanced(1);
        $model->setProductIds($productId);
        $model->setSortOrder('0');
        $model->setSimpleAction('by_percent');
        $model->setDiscountAmount($discountprice);
        $model->setDiscountStep(0);
        $model->setSimpleFreeShipping(0);
        $model->setCouponType(2);
        $model->setCouponCode($couponCode);
        $model->setUsesPerCoupon(1);
        $model->setTimesUsed(0);
        $model->setIsRss(0);
        $model->setWebsiteIds('1');

         $sku=$_POST['product']['sku'];
        print $sku;
/*$skuCond = Mage::getModel('salesrule/rule_condition_product')
           ->setType('salesrule/rule_condition_product')
           ->setAttribute('sku')
           ->setOperator('==')
           ->setValue($sku);
    print_r($skuCond); exit;       
$found = Mage::getModel('salesrule/rule_condition_product_found')
         ->setType('salesrule/rule_condition_product_found')
         ->setValue(1)           // 1 == FOUND
         ->setAggregator('all'); // match ALL conditions         

$model->loadPost($found);*/

$conditions = array();
$conditions[1] = array(
'type' => 'salesrule/rule_condition_combine',
'aggregator' => 'all',
'value' => 1,
'new_child' => ''
);
$conditions['1--1'] = array
(
'type' => 'salesrule/rule_condition_product_found',//-> means 'if all of the following are true' - same rules as above for 'aggregator' and 'value'
//other values for type: 'salesrule/rule_condition_product_subselect' 'salesrule/rule_condition_combine'
'value' => 1,
'aggregator' => 'all',
'new_child' => '',
);

$conditions['1--1--1'] = array
(
'type' => 'salesrule/rule_condition_product',
'attribute' => 'sku',
'operator' => '==',
'value' => $sku,
);

$model->setData('conditions',$conditions);
$model->loadPost($model->getData());
$model->save();

anybody knows how to apply this discount for one product only what happens in following case is that the discount goes to grand total but i want to apply this discount to that product which i have entered the discount code can anybody help me to separate this discount.

please help...

thanks, Jitendra