Calculate the price based on height and width - prestashop

Question

I need to make a module that allow the user to enter width and height , and then it should calculate the price based on the height and width .
thanks in advance

Answer 1

let's say that you want to do it on the product ID N° 1 from the product page :
first add two inputs fields in your product.tpl ( or in your module.tpl called in product.tpl)
<input name="height"><br>
<input name="width">
now you need to get it in your module.php to change the price dynamicly :
$id_product = 1;
$newPrice = 0;
$height = Tools::getValue('height');
$width = Tools::getValue('width');
//Price rules (change with your rules)
if($height > 10 && $width > 10) $newPrice = 10;
$specific_price = new SpecificPrice();
$specific_price->price = $newPrice;
$specific_price->id_cart = (int) $this->context->cart->id;
$specific_price->id_shop = 0;
$specific_price->id_shop_group = 0;
$specific_price->id_currency = 0;
$specific_price->id_country = 0;
$specific_price->id_group = 0;
$specific_price->id_customer = (int) $this->context->customer->id;
$specific_price->id_product = (int)$id_product;
$specific_price->id_product_attribute = 0;
$specific_price->from_quantity = 1;
$specific_price->reduction = 0;
$specific_price->reduction_type = 'amount';
$specific_price->from = '0000-00-00 00:00:00';
$specific_price->to = '0000-00-00 00:00:00';
$specific_price->add();
and if you want add it to cart
$cart->id_lang = (int)($this->context->cookie->id_lang);
$cart->id_currency = (int)($this->context->cookie->id_currency);
$cart->updateQty($qte, $id_product);
and after order is done you put the normal price, so override the orderConfirmation controller in override/controllers/front/OrderConfirmationController.php:
class OrderConfirmationController extends OrderConfirmationControllerCore
{
public $ssl = true;
public $php_self = 'order-confirmation';
public $id_cart;
public $id_module;
public $id_order;
public $reference;
public $secure_key;
public function getPriceBack($id_product){
$normalPrice = Product::getPriceStatic($id_product);
$specific_price = new SpecificPrice();
$specific_price->price = $normalPrice;
$specific_price->id_cart = (int) $this->context->cart->id;
$specific_price->id_shop = 0;
$specific_price->id_shop_group = 0;
$specific_price->id_currency = 0;
$specific_price->id_country = 0;
$specific_price->id_group = 0;
$specific_price->id_customer = (int) $this->context->customer->id;
$specific_price->id_product = (int)$id_product;
$specific_price->id_product_attribute = 0;
$specific_price->from_quantity = 1;
$specific_price->reduction = 0;
$specific_price->reduction_type = 'amount';
$specific_price->from = '0000-00-00 00:00:00';
$specific_price->to = '0000-00-00 00:00:00';
$specific_price->add();
}
public function init()
{
parent::init();
$this->id_cart = (int)(Tools::getValue('id_cart', 0));
$is_guest = false;
/* get normal price back */
$id_product = 1;
self::getPriceBack($id_product);
/* check if the cart has been made by a Guest customer, for redirect link */
if (Cart::isGuestCartByCartId($this->id_cart)) {
$is_guest = true;
$redirectLink = 'index.php?controller=guest-tracking';
} else {
$redirectLink = 'index.php?controller=history';
}
$this->id_module = (int)(Tools::getValue('id_module', 0));
$this->id_order = Order::getOrderByCartId((int)($this->id_cart));
$this->secure_key = Tools::getValue('key', false);
$order = new Order((int)($this->id_order));
if ($is_guest) {
$customer = new Customer((int)$order->id_customer);
$redirectLink .= '&id_order='.$order->reference.'&email='.urlencode($customer->email);
}
if (!$this->id_order || !$this->id_module || !$this->secure_key || empty($this->secure_key)) {
Tools::redirect($redirectLink.(Tools::isSubmit('slowvalidation') ? '&slowvalidation' : ''));
}
$this->reference = $order->reference;
if (!Validate::isLoadedObject($order) || $order->id_customer != $this->context->customer->id || $this->secure_key != $order->secure_key) {
Tools::redirect($redirectLink);
}
$module = Module::getInstanceById((int)($this->id_module));
if ($order->module != $module->name) {
Tools::redirect($redirectLink);
}
}
}
after the order is done you have to empty the cart with id_product and delete rule in dbb :
$this->context->cart->deleteProduct(1);
Db::getInstance()->execute('DELETE FROM '._DB_PREFIX_.'specific_price WHERE id_customer='.(int)$this->context->customer->id);
it s just an example and can not use without variables tests and maybe put constante for your product id concerned, hope it helps