Buy 5 and get 2 (cheapest) for FREE

[Veselina Boyanova]

Hello,
Your plugin is really wonderful!
I need your kind assistance for the Black Promo:
Buy 7 (products of a specific category) and get 2 (the cheapest of them) for FREE!
Could you please tell me the right settings? Because I’ve already tried several combinations, but I couldn’t achiev my goal. 🙁
Thank you in advance!
Veselina

[Soft79]

If you paste the following snippet to your child theme, you get an option ‘Limit discount to: Two cheapest of every n items’ that you can use.

1. Paste the snippet in your child theme’s functions.php
2. Create a new 100% discount coupon
3. On the ‘Usage restrictions’-tab set ‘Minimum quantity of matching products’ to: 7
4. On the ‘Usage limits’-tab set ‘Limit discount to’ to ‘Two cheapest of every n items’

That should do the trick!

add_filter( 'wjecf_get_limit_to_options',
    function ( $options ) {
        $options['two_cheapest_for_every_n_items'] = [
            'callback' => 'limit_to_two_cheapest_for_every_n_items',
            'title' => __( 'Two cheapest of every n items. n = min qty of matching products (or 2 if not supplied)', 'woocommerce-jos-autocoupon')
        ];
        return $options;
    }, 10, 1
);

function limit_to_two_cheapest_for_every_n_items( $coupon, $discountable_cart_items ) {
    //nth is the amount entered in 'minimum qty of matching products' or 2
    $nth = intval( WJECF_Wrap( $coupon )->get_meta( '_wjecf_min_matching_product_qty' ) );
    if ( empty( $nth ) ) {
        $nth = 2;
    }

    //Discountable items; cheap to expensive
    uasort(
        $discountable_cart_items,
        function ( $cart_item_a, $cart_item_b ) {
            $price_a = $cart_item_a['data']->get_price();
            $price_b = $cart_item_b['data']->get_price();
            return $price_a <=> $price_b;
        }
    );

    $limits = [];

    //First find the total number of items
    $total_items = 0;
    foreach( $discountable_cart_items as $cart_item_key => $cart_item ) {
        $total_items += $cart_item['quantity'];
    }

    //This amount of items should be discounted
    $discountable_items_left = 2 * floor( $total_items / $nth );

    foreach( $discountable_cart_items as $cart_item_key => $cart_item ) {
        $limits[$cart_item_key] = min( $discountable_items_left, $cart_item['quantity'] );
        $discountable_items_left -= $limits[$cart_item_key];
    }

    return $limits;
}

[Veselina Boyanova]

Thank you extremely much for your fast cooperation!!! It works like a charm!!! 🙂
Have a wonderful week!!! 🙂

[Author]

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