change product special price for current session

Question

Is it possible to set product special price for current session? because i have to set product special price if my custom condition is satisfied?is it possible?

Answer 1

If you have a look at Mage_Catalog_Model_Product class you can find a method

/**
 * Returns special price
 *
 * @return float
 */
public function getSpecialPrice()
{
    return $this->_getData('special_price');
}

You can easily rewrite this method and add you condition there to set special price based on your condition. It could be something like this.

/**
 * Returns special price
 *
 * @return float
 */
public function getSpecialPrice()
{
    if ($yourCondition) {
        if (!isset($this->_getData('mycustom_special_price'))) {
            $this->_setData('mycustom_special_price', $customerPrice);
        }
        return $this->_getData('mycustom_special_price'); 

    } else {
        return parent::getSpecialPrice();
    }
}

Answer 2

you can set the session using set, getting value using get and unset session using uns.

Mage::getSingleton(‘core/session’)->setMySessionVariable(‘MyValue’); 

$myValue  =  Mage::getSingleton(‘core/session’)->getMySessionVariable();

echo $myValue;

Mage::getSingleton(‘core/session’)->unsMySessionVariable();