WooCommerce 添加到购物车针对特定产品 ID 的自定义重定向

Question

I am trying to hook in on the Add to cart redirect, changing the URL for specific product-ID As a starting point, I found the following code (Source: https://jeroensormani.com/redirect-users-after-add-to-cart/ )

   function my_custom_add_to_cart_redirect( $url ) {
    
    if ( ! isset( $_REQUEST['add-to-cart'] ) || ! is_numeric( $_REQUEST['add-to-cart'] ) ) {
        return $url;
    }
    
    $product_id = apply_filters( 'woocommerce_add_to_cart_product_id', absint( $_REQUEST['add-to-cart'] ) );
    
    // Only redirect the product IDs in the array to the checkout
    if ( in_array( $product_id, array( 1, 16, 24) ) ) {
            $url = "https://mywebsite.com/";
        }
        
        return $url;
    
    }
    add_filter( 'woocommerce_add_to_cart_redirect', 'my_custom_add_to_cart_redirect' );

Which seems approved by others. For me, it seems to ignore the redirect infusion when a condition is applied to it. It works when the condition is left out:

function my_custom_add_to_cart_redirect( $url ) {
    $url = "https://mywebsite.com/";
    return $url;
}
add_filter( 'woocommerce_add_to_cart_redirect', 'my_custom_add_to_cart_redirect' );

My conclusion/guess is, that there is something in the condition or the filter, that is outdated, but I cannot figure out what's wrong. I have researching other simuler code, based on the woocommerce_add_to_cart_redirect hook, and tried countless snippets, and combinations of functions, but I cannot get any of them working, whenever a condition is applied to it.

[Edit] Now that I think about it, It could very well be a query problem. But not too sure how to go about that.

Any help will be greatly appreciated.

Answer 1

First There are 2 available arguments for woocommerce_add_to_cart_redirect filter hook. So yes the code you found is a bit outdated.

For everyone, this hook works if you have enabled "Redirect to the cart page after successful addition" option on WooCommerce Settings > Products (tab) .

Now, there are 2 kinds of add to cart in WooCommerce:

• Ajax add to cart,
• and Normal add to cart.

The hook woocommerce_add_to_cart_redirect only works for Normal add to cart to target specific products, as you cant handle the product ID with Ajax add to cart for the redirection (see below) .

For Ajax add to cart the hook is defined in here like:

'cart_url' => apply_filters( 'woocommerce_add_to_cart_redirect', wc_get_cart_url(), null ),

where the 2nd argument is set to null .

---

For Normal Add to cart the hook is defined in here like:

$url = apply_filters( 'woocommerce_add_to_cart_redirect', $url, $adding_to_cart );

where $adding_to_cart (2nd argument) is the product object defined in here like:

$adding_to_cart = wc_get_product( $product_id );

---

Here is a correct example of working code for Normal Add to cart handling specific product Ids custom redirection:

add_filter( 'woocommerce_add_to_cart_redirect', 'custom_add_to_cart_redirect', 10, 2 );
function custom_add_to_cart_redirect( $redirect_url, $product ) {
    $product_ids = array( 37, 22, 53, 40 ); // Here set your product Ids in the array

    // Only redirect the product IDs in the array to the checkout
    if ( is_object($product) && in_array( $product->get_id(), $product_ids ) ) {
        $redirect_url = wc_get_checkout_url();
    }

    return $redirect_url;
}

Code goes in functions.php file of the active child theme (or active theme). Tested and works for normal add to cart.

To handle Ajax add to cart redirection to a custom Url for specific products , Some jQuery code will be required…

Answer 2

Ok, been trying a lot to figure this error out. After adding the working snippet suggested by LoicTheAztec, I get this error, when loading the "Cart" page, regardless of it being empty or not.

Fatal error: Uncaught ArgumentCountError: Too few arguments to function pza_custom_add_to_cart_redirect(), 1 passed in /home/ DOMAIN /public_html/wp-includes/class-wp-hook.php on line 287 and exactly 3 expected in /home/ DOMAIN /public_html/wp-content/themes/generatepress_child/functions.php: 149 Stack trace: #0 /home/ DOMAIN /public_html/wp-includes/class-wp-hook.php(287): pza_custom_add_to_cart_redirect('https:// DOMAIN ...') #1 /home/ DOMAIN /public_html/wp-includes/plugin.php(212): WP_Hook->apply_filters('https:// DOMAIN ...', Array) #2 /home/ DOMAIN /public_html/wp-content/plugins/uni-woo-custom-product-options-premium/includes/class-uni-cpo-frontend-scripts.php(959): apply_filters('woocommerce_add...', 'https:// DOMAIN ...') #3 /home/ DOMAIN /public_html/wp-includes/class-wp-hook.php(287): Uni_Cpo_Frontend_Scripts::load_scripts('') #4 /home/ DOMAIN /public_html/wp-incl udes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array) #5 /home/ DOMAIN /public_ in /home/ DOMAIN /public_html/wp-content/themes/generatepress_child/functions.php on line 149

It seems to be a conflict with the UNI-CPO Plugin. When disabling the plugin, the issue is gone. I am having a hard time figurering out, if it is the fault of the snippet or the plugin, and how to get around it, if at all possible.