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Buy one get second 50% off for WooCommerce product variations

I wish to set up a specific discount on a particular variable products but for certain selected variations not for all variation:
eg : my varible id – 1571
variation id – 1572
variation id – 1573

So if customer buys one product they get the another (the same) on 50% discount (Buy one get another for 50% off).

I’ve tried many discount plugins and the closest that I have found are:

With some of them, I was able to setup discount on subtotal or discount on a each product but not exactly what I am looking for (Buy 1 get 1 off). There are other pro plugins I don’t want to go for it.

The nearest code that I found is WooCommerce discount: buy one get one 50% off with a notice.

Is it possible to make a discount on the 2nd item for specific product variations of a variable product (only for each product variation)?

  1. mak
Tags:

2

Answers


  1. 0

    You were really close!

    The discount amount calculation were wrong

    add_action('woocommerce_cart_calculate_fees', 'add_custom_discount_2nd_at_50', 10, 1 );
function add_custom_discount_2nd_at_50( $wc_cart ){

if ( is_admin() && ! defined( 'DOING_AJAX' ) ) return;
$discount = 0;
$items_prices = array();
$qty_notice = 0;  //  <==  Added HERE

// Set HERE your targeted variable product ID
$targeted_product_id = 1571 ;

foreach ( $wc_cart->get_cart() as $key => $cart_item ) {
    if( $cart_item['product_id'] == $targeted_product_id ){
        $qty = intval( $cart_item['quantity'] );
        $qty_notice += intval( $cart_item['quantity'] ); //  <==  Added HERE
        for( $i = 0; $i < $qty; $i++ )
            $items_prices[] = floatval( $cart_item['data']->get_price());
    }
}
$count_items_prices = count($items_prices);
//to get the discount of lowest price sorting in descending order 
rsort($items_prices);
if( $count_items_prices > 1 ) foreach( $items_prices as $key => $price )
    if( $key % 2 == 1 ) $discount -= number_format($price / 2, 2 );
if( $discount != 0 ){
  // The discount
  # Note: Last argument in add_fee() method is related to applying the tax or not to the discount (true or false)
$wc_cart->add_fee('50% off de segunda almohada' , (($price/2)*($discount))^⁻1, true  ); //EDITED
  // Displaying a custom notice (optional)
  wc_clear_notices();
  if(!is_checkout()){
  wc_add_notice( __("Hurrah!! You got 50% off discount on the 2nd item"), 'notice');
}}
//  Display a custom notice on cart page when quantity is equal to 1.
elseif( $qty_notice == 1){ 
    wc_clear_notices();
  if(!is_checkout()){
    wc_add_notice( __( "Add one more to get 50% off on 2nd item" ), 'notice');
}}
}
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  2. 0

    To get a 50% Off on the 2nd item for some specific product variations of a variable product, you will use the following instead:

    add_action('woocommerce_cart_calculate_fees', 'add_custom_discount_2nd_at_50', 10, 1 );
function add_custom_discount_2nd_at_50( $cart ){
    if ( is_admin() && ! defined( 'DOING_AJAX' ) )
        return;

    // YOUR SETTINGS:
    $product_variations_ids = array(1572, 1573); // <== HERE your targeted product variations

    // Initializing variables
    $discount = 0;
    $product_names = array();

    // Loop through cart items
    foreach ( $cart->get_cart() as $key => $cart_item ) {
        if ( in_array( $cart_item['variation_id'], $product_variations_ids ) ) {
            $qty   = (int)    $cart_item['quantity'];
            $price = (float)  $cart_item['data']->get_price();
            $name  = (string) $cart_item['data']->get_name();

            if ( $qty > 1 ) {
                $discount -= number_format( $price / 2, 2 );
            }
            elseif( $qty = 1 ) {
                $product_names[] = $name;
            }
        }
    }

    // Applying the discount
    if( $discount != 0 ){
        $cart->add_fee('Buy one get one 50% off', $discount );
    }
    
    //  Display a custom reminder notice on cart page (otional)
    if( ! empty($product_names) ){
        wc_clear_notices(); // clear other notices on checkout page.
        if( ! is_checkout() ){
            wc_add_notice( sprintf(
                __( "Add one more to get 50%% off on the 2nd item for %s" ),
                '"<strong>' . implode(', ', $product_names) . '</strong>"'
            ), 'notice' );
        }
    }
}

    Code goes in functions.php file of your active child theme (or active theme) Tested and works.

    To get 1 item at 50% OFF for each item purchased, instead of 50% OFF on the 2nd item, replace:

    $discount -= number_format( $price / 2, 2 );

    by:

    $multiplier = ( $qty % 2 ) === 0 ? $qty / 2 : ( $qty - 1 ) / 2;
$discount  -= number_format( $price / 2 * $multiplier, 2 );

    To get the 2nd one Free instead of 50% OFF on the 2nd item, replace the code line:

    $discount -= number_format( $price / 2, 2 );

    by:

    $discount -= $price;

    To get 1 item free for each item purchased, instead of 50% OFF on the 2nd item, replace:

    $discount -= number_format( $price / 2, 2 );

    by:

    $multiplier = ( $qty % 2 ) === 0 ? $qty / 2 : ( $qty - 1 ) / 2;
$discount  -= $price * $multiplier;
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