WooCommerce: Get $cart_item in price function

Question

I'm using a custom function to change the style of the product price.

This is my actual function:

add_filter( 'woocommerce_format_sale_price', function( $price, $regular_price, $sale_price ) {
    // stuff happens here
}, 10, 3 );

It works fine on product detail pages if I want some meta fields from the product.

I can get these meta fields if I use global $product and go from there.

The problem is, that global $product throws an error if used on the cart/checkout page.

So I'm using is_product() and is_cart() to check where I am.

But I couldn't figure out how to get the meta fields from a product in the cart.

I know, that I could use $cart_item like $product. But it seems that there is no way to use that with global.

Is there any other way to get the cart item in the function above?

Answer 1

You can use WC()->cart to get cart object. then you can loop it using $cart->get_cart() to get cart_item. try below code.

add_filter( 'woocommerce_format_sale_price', function( $price, $regular_price, $sale_price ) {
    if ( WC()->cart ) {
        $cart = WC()->cart; // Get cart
        if ( ! $cart->is_empty() ) {
            foreach ( $cart->get_cart() as $cart_item_key => $cart_item ) {
                $product_id = $cart_item['product_id'];
                // stuff happens here
            }
        }
    }
}, 10, 3 );