What the code in hookActionCartSave function run 2 times

[phinq1910]

I have ceated test module with prestashop and have a question, please explain for me

 

1, Regis hook actioncartsave

$this->registerHook('actionCartSave')

2, When I print string in hookActionCartSave function, 

public function hookActionCartSave()
{
		//return false;
		if (!$this->active || !Validate::isLoadedObject($this->context->cart) || !Tools::getIsset('id_product')) return false;

		print_r('expression');
               return false;
}

3, it display double result, why?

expressionexpression{"products":[{"id":1,"link":"http:\/\/localhost\/ps16c\/index.php?id_product=1&controller=product#\/size-s\/color-orange","quantity":3,"image":"http:\/\/localhost\/ps16c\/img\/p\/1\/1-home_default.jpg","image_cart":"http:\/\/localhost\/ps16c\/img\/p\/1\/1-cart_default.jpg","priceByLine":"$49.53","name":"Faded Short Sleeves T-shirt","price":"$49.53","price_float":49.53,"idCombination":1,"idAddressDelivery":5,"is_gift":false,"hasAttributes":true,"attributes":"S, Orange","hasCustomizedDatas":false,"customizedDatas":[]}],"discounts":[],"shippingCost":"$7.00","shippingCostFloat":7,"wrappingCost":"$0.00","nbTotalProducts":3,"total":"$56.53","productTotal":"$49.53","freeShipping":"$0.00","freeShippingFloat":0,"free_ship":false,"isVirtualCart":false,"hasError":false,"crossSelling":""}

Please help me

 

Thank you very much

 

[joseantgv]

I have ceated test module with prestashop and have a question, please explain for me

 

1, Regis hook actioncartsave

$this->registerHook('actionCartSave')

2, When I print string in hookActionCartSave function, 

public function hookActionCartSave()
{
		//return false;
		if (!$this->active || !Validate::isLoadedObject($this->context->cart) || !Tools::getIsset('id_product')) return false;

		print_r('expression');
               return false;
}

3, it display double result, why?

expressionexpression{"products":[{"id":1,"link":"http:\/\/localhost\/ps16c\/index.php?id_product=1&controller=product#\/size-s\/color-orange","quantity":3,"image":"http:\/\/localhost\/ps16c\/img\/p\/1\/1-home_default.jpg","image_cart":"http:\/\/localhost\/ps16c\/img\/p\/1\/1-cart_default.jpg","priceByLine":"$49.53","name":"Faded Short Sleeves T-shirt","price":"$49.53","price_float":49.53,"idCombination":1,"idAddressDelivery":5,"is_gift":false,"hasAttributes":true,"attributes":"S, Orange","hasCustomizedDatas":false,"customizedDatas":[]}],"discounts":[],"shippingCost":"$7.00","shippingCostFloat":7,"wrappingCost":"$0.00","nbTotalProducts":3,"total":"$56.53","productTotal":"$49.53","freeShipping":"$0.00","freeShippingFloat":0,"free_ship":false,"isVirtualCart":false,"hasError":false,"crossSelling":""}

Please help me

 

Thank you very much

 

It seems as if it was called twice.

 

Use "debug_backtrace" function to check it.

[phinq1910]

I put var_dump(debug_backtrace()); it only display my module called (display double result)

array(9) {
  [0]=>
  array(7) {
    ["file"]=>
    string(38) "D:\Xampp\htdocs\ps16c\classes\Hook.php"
    ["line"]=>
    int(587)
    ["function"]=>
    string(18) "hookActionCartSave"
    ["class"]=>
    string(15) "testmodule"
    ["object"]=> 

Wellcome your idea

Thanks

[joseantgv]

I put var_dump(debug_backtrace()); it only display my module called (display double result)

array(9) {
  [0]=>
  array(7) {
    ["file"]=>
    string(38) "D:\Xampp\htdocs\ps16c\classes\Hook.php"
    ["line"]=>
    int(587)
    ["function"]=>
    string(18) "hookActionCartSave"
    ["class"]=>
    string(15) "testmodule"
    ["object"]=> 

Wellcome your idea

Thanks

 

Could you paste the full trace?

[phinq1910]

Yes, please check the below link

 

https://drive.google.com/file/d/0B5Q3dn8S8lg8NXAwX3pfQ1RYdm8/view

 

Thank you

[phinq1910]

I think because presta system call 2 times hookActionCartSave

 public function add($autodate = true, $null_values = false)
    {
        if (!$this->id_lang) {
            $this->id_lang = Configuration::get('PS_LANG_DEFAULT');
        }
        if (!$this->id_shop) {
            $this->id_shop = Context::getContext()->shop->id;
        }

        $return = parent::add($autodate, $null_values);
        Hook::exec('actionCartSave');

        return $return;
    }

    public function update($null_values = false)
    {
        if (isset(self::$_nbProducts[$this->id])) {
            unset(self::$_nbProducts[$this->id]);
        }

        if (isset(self::$_totalWeight[$this->id])) {
            unset(self::$_totalWeight[$this->id]);
        }

        $this->_products = null;
        $return = parent::update($null_values);
        Hook::exec('actionCartSave');

        return $return;
    }

So is it problem of presa?

 

Thank you

[joseantgv]

I think because presta system call 2 times hookActionCartSave

 public function add($autodate = true, $null_values = false)
    {
        if (!$this->id_lang) {
            $this->id_lang = Configuration::get('PS_LANG_DEFAULT');
        }
        if (!$this->id_shop) {
            $this->id_shop = Context::getContext()->shop->id;
        }

        $return = parent::add($autodate, $null_values);
        Hook::exec('actionCartSave');

        return $return;
    }

    public function update($null_values = false)
    {
        if (isset(self::$_nbProducts[$this->id])) {
            unset(self::$_nbProducts[$this->id]);
        }

        if (isset(self::$_totalWeight[$this->id])) {
            unset(self::$_totalWeight[$this->id]);
        }

        $this->_products = null;
        $return = parent::update($null_values);
        Hook::exec('actionCartSave');

        return $return;
    }

So is it problem of presa?

 

Thank you

 

Are you adding a product to the cart from your module?

[phinq1910]

No, I click Add to cart on detail product of presta