Habib Rehman Habib Rehman - 3 months ago 65
PHP Question

WooCommerce - Adding a custom price to each product in cart

I would like to update the price of products adding a custom price in cart using this simple piece of code

update_post_meta( $product->id, '_regular_price', $frame_price_added);
.

Note: what I'm trying to achieve is to add this custom price to each product in cart.


I have try to get
$frame_price_added
this way:

$frame_price = $res['_number_field'][0];
$frame_price_added = $product->price + $frame_price;


Here
$product->price
is price coming from woocomerce product and
$frame_price
is coming from my newly added price.

I was wondering how do I associate this new price to cart, because it doesn't work.

I have tried using
update_post_meta( $product->id, '_price', $frame_price_added);
and when page is refreshed it adds and stores the custom price to the product, and saved it.

Any idea on how I can achieve this properly?

Thanks.





Edit: One more thing… I have searched a function that can being called on add to cart and i didn't find any thing, and also an action hook being called on
woocommerce_template_single_add_to_cart
which had
woocommerce_single_product_summary
but it didn't find any function.

Answer

You can use woocommerce_before_calculate_totals hook to customize your cart items prices.

You can define $framed_price variables as global in your function, this way.

This is the code:

// getting your additional price outside the function (making any conditional calculations) 
$framed_price = 20;

add_action( 'woocommerce_before_calculate_totals', 'add_custom_total_price', 10, 2 );
function add_custom_total_price( $cart_object ) {
    global $woocommerce, $framed_price;

    foreach ( $cart_object->cart_contents as $key => $value ) {
        $value['data']->price += $framed_price;
    }
}

Or get your custom price inside the hooked function (optionally, depending on how you get your custom price):

add_action( 'woocommerce_before_calculate_totals', 'add_custom_total_price', 10, 2 );
function add_custom_total_price( $cart_object ) {
    global $woocommerce;
    $framed_price = 20;

    foreach ( $cart_object->cart_contents as $key => $value ) {
        $value['data']->price += $framed_price;
    }
}

This code is tested and working.

Naturally this code goes on function.php file of your active child theme (or theme) or in any plugin file.

Reference: WooCommerce Cart - Dynamic Price variable pass into custom price hook

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