I need to develop a plugin that applies a discount to the cart if x number of products have been purchased. Could someone point me in the direction of the code/API I need to use.
Can find nothing from / and do not fancy paying $100+ for the official bulk discount plugin just to get some simple functionality like this.
I have found that WooCommerce's get_total_discount() function applies the woocommerce_cart_total_discount filter, but I don't seem to be able to successfully tap into that filter...
function mwe_calculate_discount( $total_discount, $cart ) {
//global $woocommerce;
$num_products_required_for_discount = 4;
echo "<!-- Discount? -->";
$number_products = $cart->cart_contents_count;
if ($number_products >= $num_products_required_for_discount) {
echo "<!-- QUALIFIES FOR DISCOUNT! -->";
for ($i = 0; $i < $number_products; $i++) {
// Get the reduced price of the product - TODO
// Calculate $product_discount
$product_discount = 11.11; // TODO
// Add $product_discount to the $total_discount
$total_discount += $product_discount;
}
echo "<!-- Total discount: $total_discount -->";
}
else {
echo "<!-- NO DISCOUNT -->";
}
return $total_discount;
}
add_filter('woocommerce_cart_total_discount', 'mwe_calculate_discount', 10, 2);
...any idea what is wrong with my code?
I need to develop a plugin that applies a discount to the cart if x number of products have been purchased. Could someone point me in the direction of the code/API I need to use.
Can find nothing from https://docs.woothemes/documentation/plugins/woocommerce/woocommerce-codex/ and do not fancy paying $100+ for the official bulk discount plugin just to get some simple functionality like this.
I have found that WooCommerce's get_total_discount() function applies the woocommerce_cart_total_discount filter, but I don't seem to be able to successfully tap into that filter...
function mwe_calculate_discount( $total_discount, $cart ) {
//global $woocommerce;
$num_products_required_for_discount = 4;
echo "<!-- Discount? -->";
$number_products = $cart->cart_contents_count;
if ($number_products >= $num_products_required_for_discount) {
echo "<!-- QUALIFIES FOR DISCOUNT! -->";
for ($i = 0; $i < $number_products; $i++) {
// Get the reduced price of the product - TODO
// Calculate $product_discount
$product_discount = 11.11; // TODO
// Add $product_discount to the $total_discount
$total_discount += $product_discount;
}
echo "<!-- Total discount: $total_discount -->";
}
else {
echo "<!-- NO DISCOUNT -->";
}
return $total_discount;
}
add_filter('woocommerce_cart_total_discount', 'mwe_calculate_discount', 10, 2);
...any idea what is wrong with my code?
Share Improve this question edited Oct 6, 2015 at 18:33 Boycott A.I. asked Oct 6, 2015 at 17:35 Boycott A.I.Boycott A.I. 16811 silver badges24 bronze badges 1- I have found the article about WooCommerce discount cart which describe how to get discount on total sales, orders, shipping cost and sales per item cloudways/blog/woocommerce-discount-cart – Owais Alam Commented Dec 14, 2017 at 8:47
1 Answer
Reset to default 3I haven't applied any discounts like that before, but have done it with 'fees' a lot.
Adding a fee is quite easy:
function custom_wc_add_fee() {
WC()->cart->add_fee( 'Fee', -10 );
}
add_action( 'woocommerce_cart_calculate_fees','custom_wc_add_fee' );
(or if you want a plugin solution, I created this plugin: https://aceplugins/plugin/woocommerce-advanced-fees/)