如何在Prestashop中限制每次交易的憑證綁定

Question

購物車定價規則中的prestashop功能之一是可以在一次交易中綁定不同憑證。默認情況下，您可以在單個事務中綁定20個憑單。

問題是：我如何限制每筆交易的優惠券僅限10張優惠券？

我是否需要在後端自定義代碼或prestahop的管理面板中有一個選項？

希望能得到您的即時回覆。

感謝，

Answer 1

你必須重寫ParentOrderController類，這種方式：

<?php 
class ParentOrderController extends ParentOrderControllerCore { 
    public function init() 
    { 
     $this->isLogged = (bool)($this->context->customer->id && Customer::customerIdExistsStatic((int)$this->context->cookie->id_customer)); 

     FrontController::init(); 

     /* Disable some cache related bugs on the cart/order */ 
     header('Cache-Control: no-cache, must-revalidate'); 
     header('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); 

     $this->nbProducts = $this->context->cart->nbProducts(); 

     if (!$this->context->customer->isLogged(true) && $this->useMobileTheme() && Tools::getValue('step')) 
      Tools::redirect($this->context->link->getPageLink('authentication', true, (int)$this->context->language->id)); 

     // Redirect to the good order process 
     if (Configuration::get('PS_ORDER_PROCESS_TYPE') == 0 && Dispatcher::getInstance()->getController() != 'order') 
      Tools::redirect('index.php?controller=order'); 

     if (Configuration::get('PS_ORDER_PROCESS_TYPE') == 1 && Dispatcher::getInstance()->getController() != 'orderopc') 
     { 
      if (Tools::getIsset('step') && Tools::getValue('step') == 3) 
       Tools::redirect('index.php?controller=order-opc&isPaymentStep=true'); 
      Tools::redirect('index.php?controller=order-opc'); 
     } 

     if (Configuration::get('PS_CATALOG_MODE')) 
      $this->errors[] = Tools::displayError('This store has not accepted your new order.'); 

     if (Tools::isSubmit('submitReorder') && $id_order = (int)Tools::getValue('id_order')) 
     { 
      $oldCart = new Cart(Order::getCartIdStatic($id_order, $this->context->customer->id)); 
      $duplication = $oldCart->duplicate(); 
      if (!$duplication || !Validate::isLoadedObject($duplication['cart'])) 
       $this->errors[] = Tools::displayError('Sorry. We cannot renew your order.'); 
      else if (!$duplication['success']) 
       $this->errors[] = Tools::displayError('Some items are no longer available, and we are unable to renew your order.'); 
      else 
      { 
       $this->context->cookie->id_cart = $duplication['cart']->id; 
       $this->context->cookie->write(); 
       if (Configuration::get('PS_ORDER_PROCESS_TYPE') == 1) 
        Tools::redirect('index.php?controller=order-opc'); 
       Tools::redirect('index.php?controller=order'); 
      } 
     } 

     if ($this->nbProducts) 
     { 
      if (CartRule::isFeatureActive()) 
      { 
       if (Tools::isSubmit('submitAddDiscount')) 
       { 
        $cart_rules = $this->context->cart->getCartRules(); 

        if (!($code = trim(Tools::getValue('discount_name')))) 
         $this->errors[] = Tools::displayError('You must enter a voucher code.'); 
        elseif (!Validate::isCleanHtml($code)) 
         $this->errors[] = Tools::displayError('The voucher code is invalid.'); 
        elseif(count($cart_rules)>=10) 
         $this->errors[] = Tools::displayError('You have reached the maximum number of coupons that can be used'); 
        else 
        { 
         if (($cartRule = new CartRule(CartRule::getIdByCode($code))) && Validate::isLoadedObject($cartRule)) 
         { 
          if ($error = $cartRule->checkValidity($this->context, false, true)) 
           $this->errors[] = $error; 
          else 
          { 
           $this->context->cart->addCartRule($cartRule->id); 
           if (Configuration::get('PS_ORDER_PROCESS_TYPE') == 1) 
            Tools::redirect('index.php?controller=order-opc&addingCartRule=1'); 
           Tools::redirect('index.php?controller=order&addingCartRule=1'); 
          } 
         } 
         else 
          $this->errors[] = Tools::displayError('This voucher does not exists.'); 
        } 
        $this->context->smarty->assign(array(
         'errors' => $this->errors, 
         'discount_name' => Tools::safeOutput($code) 
        )); 
       } 
       elseif (($id_cart_rule = (int)Tools::getValue('deleteDiscount')) && Validate::isUnsignedId($id_cart_rule)) 
       { 
        $this->context->cart->removeCartRule($id_cart_rule); 
        Tools::redirect('index.php?controller=order-opc'); 
       } 
      } 
      /* Is there only virtual product in cart */ 
      if ($isVirtualCart = $this->context->cart->isVirtualCart()) 
       $this->setNoCarrier(); 
     } 

     $this->context->smarty->assign('back', Tools::safeOutput(Tools::getValue('back'))); 
    } 
} 

這是所有的init（）方法，我有充分粘貼，以避免錯誤或錯誤。

差異：

• 線＃7 - 呼叫FrontController ::的init（）代替父::的init（）
• 線＃56 - 獲取存儲在當前車規則
• 線＃62 -63 - 在這裏您的請求，檢查購物車規則的編號

請注意，如果您升級您的ps版本，請記住您已覆蓋整個方法。

享受;）