WooCommerce add to cart validation: prevent add to cart

Question

I have a probleme with woocommerce that im trying to fix for few days.

I am creating a website for a guy and he wanted me to add a custom input on the product page, I cou

Answer 1

Yes, sorry i'am new in this forum. However i have found a solution, i have edit directly class-wc-cart.php at line 900, and i have copy the function before the if:

if($passed!=false)
{
    do_action( 'woocommerce_add_to_cart', $cart_item_key, $product_id, $quantity, $variation_id, $variation, $cart_item_data );
}

Now for me it works, i know that isn't the most correct solution but for the moment it works, i have only to be careful when i will update woocommerce