Allow only one product in cart (order.php)

[ramin]

I have Disabled ajax on my shopping cart moudle

I want to edit prestashop 1.4.9 for purpose allow only one product at time in cart details I need help how to do it and which changes must be applied.

Edited January 21, 2013 by ramin (see edit history)

[maciekmaster]

I need the same solution.

 

The customer can select a product and then just the same to cart. Only after placing the order may select a different product.

 

Is there a module or solution?

[jaimeweb]

Hi, 
Can anyone advise how to do this? 
I simply want to restrict customers to add more than 1 product to their cart. If they try to add multiple items some sort of warning/message comes up. 

Please help!

[jaimeweb]

Anyone? 

[jaimeweb]

Bump

[gonebdg - webindoshop.com]

You need to override controller file CartController.php , public function preProcess(). e.g :

public function preProcess()
{
    if(count(self::$cart->getProducts) > 1)
       $this->errors[] = Tools::displayError('Sorry only 1 product allowed to be purchased');
    else
       parent::preProcess();
}

[jaimeweb]

Hi Thanks for your reply. 
How do I implement this into the CartController? Where should it go or replace? 

 

Thanks

[vekia]

in your prestashop filesystem in directory /controllers/ you've got file CartController.php

path: /controllers/CartController.php

 

inside this function you've got function: public function preProcess(), use there code mentioned above, 

[jaimeweb]

I cannot find any reference to "public function preProcess()" in CartController.php. 
I am on 1.5.5

[jaimeweb]

Hi vekia, any chance you could help me find where to put this on 1.5.5? 

Thanks again for your help!

[vekia]

open file:/controllers/CartController.php

 

there is function postProcess();

 

use this one:

 

 

 

public function postProcess()
{
// Update the cart ONLY if $this->cookies are available, in order to avoid ghost carts created by bots
if ($this->context->cookie->exists() && !$this->errors && !($this->context->customer->isLogged() && !$this->isTokenValid()))
{
if (Tools::getIsset('add') || Tools::getIsset('update')){

if(count($this->context->cart->getProducts()) >= 1)
$this->errors[] = Tools::displayError('Sorry only 1 product allowed to be purchased');
else
$this->processChangeProductInCart();

}
else if (Tools::getIsset('delete'))
$this->processDeleteProductInCart();
else if (Tools::getIsset('changeAddressDelivery'))
$this->processChangeProductAddressDelivery();
else if (Tools::getIsset('allowSeperatedPackage'))
$this->processAllowSeperatedPackage();
else if (Tools::getIsset('duplicate'))
$this->processDuplicateProduct();
// Make redirection
if (!$this->errors && !$this->ajax)
{
$queryString = Tools::safeOutput(Tools::getValue('query', null));
if ($queryString && !Configuration::get('PS_CART_REDIRECT'))
Tools::redirect('index.php?controller=search&search='.$queryString);

// Redirect to previous page
if (isset($_SERVER['HTTP_REFERER']))
{

if (isset($regs[3]) && !Configuration::get('PS_CART_REDIRECT'))
Tools::redirect($_SERVER['HTTP_REFERER']);
}

Tools::redirect('index.php?controller=order&'.(isset($this->id_product) ? 'ipa='.$this->id_product : ''));
}

}
elseif (!$this->isTokenValid())
Tools::redirect('index.php');
}

 

 

 

effect:

[abugroup]

open file:/controllers/CartController.php

 

there is function postProcess();

 

use this one:

 

 

 

 

effect:

 

 

 

Hi, thank you for this solution

 

But in Prestashop 1.6 it does not showing any message can you give any solution about this thankyou vekia

Edited June 13, 2014 by abugroup (see edit history)

[ZiedDams]

any updates for 1.7 ?