Updating WooCommerce cart after adding a variable product (AJAX) - php

Question

I am overriding the AJAX function to add a product using WooCommerce so I can send attributes to the cart as well (which doesn't work out of the box).
I followed the instructions on Update WooCommerce Cart After Adding Variable Product Via AJAX - which does what I want - but it doesn't work completely.
Everything is good when I am logged out. But when I log into Wordpress the PHP override doesn't work/gets ignored. I get no errors and no product is added to the cart. I tried many different approaches, but nothing helps.
function ajax_add_to_cart_script() {
$vars = array( 'ajax_url' => admin_url( 'admin-ajax.php' ) );
wp_enqueue_script( 'wc-variation-add-to-cart', get_template_directory_uri() . '/js/jquery.add-to-cart.js', array( 'jquery' ), null, true);
wp_localize_script( 'wc-variation-add-to-cart', 'WC_VARIATION_ADD_TO_CART', $vars );
}
add_action( 'wp_enqueue_scripts', 'ajax_add_to_cart_script' );
add_action( 'wp_ajax_nopriv_woocommerce_add_variation_to_cart', 'so_27270880_add_variation_to_cart' );
function so_27270880_add_variation_to_cart() {
ob_start();
$product_id = apply_filters( 'woocommerce_add_to_cart_product_id', absint( $_POST['product_id'] ) );
$quantity = empty( $_POST['quantity'] ) ? 1 : wc_stock_amount( $_POST['quantity'] );
$variation_id = isset( $_POST['variation_id'] ) ? absint( $_POST['variation_id'] ) : '';
$variations = ! empty( $_POST['variation'] ) ? (array) $_POST['variation'] : '';
$passed_validation = apply_filters( 'woocommerce_add_to_cart_validation', true, $product_id, $quantity );
if ( $passed_validation && WC()->cart->add_to_cart( $product_id, $quantity, $variation_id, $variations ) ) {
do_action( 'woocommerce_ajax_added_to_cart', $product_id );
if ( get_option( 'woocommerce_cart_redirect_after_add' ) == 'yes' ) {
wc_add_to_cart_message( $product_id );
}
// Return fragments
WC_AJAX::get_refreshed_fragments();
} else {
// If there was an error adding to the cart, redirect to the product page to show any errors
$data = array(
'error' => true,
'product_url' => apply_filters( 'woocommerce_cart_redirect_after_error', get_permalink( $product_id ), $product_id )
);
wp_send_json( $data );
}
die();
}
I am making sure that add_action( 'wp_ajax_nopriv_woocommerce_add_variation_to_cart', 'so_27270880_add_variation_to_cart' ); is added before the snippet to make sure it gets fired, which works when I am logged out - but not when I am logged in.
Anyone got any clue why?
Ping #helgatheviking

Answer 1

An update, it seems to work if I add the following to my functions.php
add_action( 'wp_ajax_nopriv_woocommerce_add_variation_to_cart', 'so_27270880_add_variation_to_cart' );
add_action( 'wp_ajax_woocommerce_add_variation_to_cart', 'so_27270880_add_variation_to_cart' );
Meaning, that one is for logged in admins and one is for normal users. Not sure why I need both because every example I have seen with this kind of extension/override only mentions the wp_ajax_nopriv_$function
Hope this helps anyone who have the same problem as me. And if anyone could explain to me why this is needed, I would be happy to hear it.