java商品类别购物车类,如果其他购物车商品属于特定类别，请将产品添加到woocommerce购物车...

把它放在你的functions.php中：

function df_add_ticket_surcharge( $cart_object ) {

global $woocommerce;

$specialfeecat = 20763; // category id you want to check for

$spfee = 0.00; // initialize special fee

$spfeeperprod = 0.00; //special fee per product

$found = $false; //required to make the code later only add the item once, also stop loops.

$product_id = 38607; //product id of the one you want to add

foreach ( $cart_object->cart_contents as $key => $value ) {

$proid = $value['product_id']; //get the product id from cart

$quantiy = $value['quantity']; //get quantity from cart

$itmprice = $value['data']->price; //get product price

//check if the desired product is already in cart.

if ( sizeof( $woocommerce->cart->get_cart() ) > 0 ) {

foreach ( $woocommerce->cart->get_cart() as $cart_item_key => $values ) {

$_product = $values['data'];

if ( $_product->id == $product_id )

$found = true;

}

}

//check for the category and add desired product

$terms = get_the_terms( $proid, 'product_cat' ); //get taxonomy of the products

if ( $terms && ! is_wp_error( $terms ) ) :

foreach ( $terms as $term ) {

$catid = $term->term_id;

if($specialfeecat == $catid && ! $found) {

WC()->cart->add_to_cart( 38607 );

}

}

endif;

}

}

add_action( 'woocommerce_cart_calculate_fees', 'df_add_ticket_surcharge' );

我修改了现有代码中的代码，这就是为什么spfee和spfeeperprod仍在那里，但你并不真正需要它们，这就是为什么我把它们设置为0.我注意到让这段代码工作的缺点是这部分：

if ( sizeof( $woocommerce->cart->get_cart() ) > 0 ) {

foreach ( $woocommerce->cart->get_cart() as $cart_item_key => $values ) {

$_product = $values['data'];

if ( $_product->id == $product_id )

$found = true;

}

}

这将检查您要添加的项目的产品ID，该产品ID指定为“$ product_id” . 希望这会有所帮助(我昨天与它斗争了很多，但今天早上终于有了突破！)