在 WooCommerce 中以最少的购物车数量添加免费的礼品产品

Question

我想为订单超过 50 美元的顾客赠送一份免费礼物。如果特定产品在购物车中则不会（这里有一些关于 Whosebug 和下面的示例）。

经过一些研究，我发现以下代码可以在将另一个特定产品添加到购物车时添加免费产品。

add_action( 'template_redirect', 'bbloomer_add_gift_if_id_in_cart' );
 
function bbloomer_add_gift_if_id_in_cart() {
 
   if ( is_admin() ) return;
   if ( WC()->cart->is_empty() ) return;
 
   $product_bought_id = 32;
   $product_gifted_id = 57;
 
   // see if product id in cart
   $product_bought_cart_id = WC()->cart->generate_cart_id( $product_bought_id );
   $product_bought_in_cart = WC()->cart->find_product_in_cart( $product_bought_cart_id );
 
   // see if gift id in cart
   $product_gifted_cart_id = WC()->cart->generate_cart_id( $product_gifted_id );
   $product_gifted_in_cart = WC()->cart->find_product_in_cart( $product_gifted_cart_id );
 
   // if not in cart remove gift, else add gift
   if ( ! $product_bought_in_cart ) {
      if ( $product_gifted_in_cart ) WC()->cart->remove_cart_item( $product_gifted_in_cart );
   } else {
      if ( ! $product_gifted_in_cart ) WC()->cart->add_to_cart( $product_gifted_id );
   }
}

在此处找到：https://www.businessbloomer.com/woocommerce-buy-1-product-add-free-product-cart-programmatically/

我也试过这段代码，但如果购物车发生变化，它不会更新：

function aapc_add_product_to_cart() {
    global $woocommerce;
    
    $cart_total = 50;   

    if ( $woocommerce->cart->total >= $cart_total ) {
        if ( ! is_admin() ) {
            $free_product_id = 12989;  // Product Id of the free product which will get added to cart
            $found      = false;

            //check if product already in cart
            if ( sizeof( WC()->cart->get_cart() ) > 0 ) {
                foreach ( WC()->cart->get_cart() as $cart_item_key => $values ) {
                    $_product = $values['data'];
                    if ( $_product->get_id() == $free_product_id )
                        $found = true;                  
                }
                // if product not found, add it
                if ( ! $found )
                    WC()->cart->add_to_cart( $free_product_id );
            } else {
                // if no products in cart, add it
                WC()->cart->add_to_cart( $free_product_id );
            }        
        }
    }        
}

add_action( 'template_redirect', 'aapc_add_product_to_cart' );

有什么方法可以更改该代码以适用于任何产品并仅限制购物车总数？

Answer 1

已更新

如果小计达到特定金额，将免费赠送一件产品添加到购物车：

// Add free gifted product for specific cart subtotal
add_action( 'woocommerce_before_calculate_totals', 'check_free_gifted_product' );
function check_free_gifted_product( $cart ) {
    if ( is_admin() && ! defined( 'DOING_AJAX' ) )
        return;

    // Settings
    $free_product_id   = 37;
    $targeted_subtotal = 50;

    $cart_subtotal     = 0; // Initializing

    // Loop through cart items (first loop)
    foreach ( $cart->get_cart() as $cart_item_key => $cart_item ){
        // When free product is is cart
        if ( $free_product_id == $cart_item['product_id'] ) {
            $free_key = $cart_item_key;
            $free_qty = $cart_item['quantity'];
            $cart_item['data']->set_price(0); // Optionally set the price to zero
        } else {
            $cart_subtotal += $cart_item['line_total'] + $cart_item['line_tax'];
        }
    }

    // If subtotal match and free product is not already in cart, add it
    if ( ! isset($free_key) && $cart_subtotal >= $targeted_subtotal ) {
        $cart->add_to_cart( $free_product_id );
    }
    // If subtotal doesn't match and free product is already in cart, remove it
    elseif ( isset($free_key) && $cart_subtotal < $targeted_subtotal ) {
        $cart->remove_cart_item( $free_key );
    }
    // Keep free product quantity to 1.
    elseif ( isset($free_qty) && $free_qty > 1 ) {
        $cart->set_quantity( $free_key, 1 );
    }
}

// Display free gifted product price to zero on minicart
add_filter( 'woocommerce_cart_item_price', 'change_minicart_free_gifted_item_price', 10, 3 );
function change_minicart_free_gifted_item_price( $price_html, $cart_item, $cart_item_key ) {
    $free_product_id   = 27;
    
    if( $cart_item['product_id'] == $free_product_id ) {
        return wc_price( 0 );
    }
    return $price_html;
}

代码进入活动子主题（或活动主题）的 functions.php 文件。已测试并有效。

在购物车页面 （免费赠品是“Beanie”）:

在迷你购物车上：

在 WooCommerce 中以最少的购物车数量添加免费的礼品产品

Add free gifted product for a minimal cart amount in WooCommerce

php

wordpress

product

cart

woocommerce