在 WooCommerce 中，我需要为产品类别的每个项目设置最小数量。我搜索了论坛，发现一些代码工作正常，只是它只计算产品类别的总数量：
add_action( 'woocommerce_checkout_process', 'wc_minimum_order_amount' );
add_action( 'woocommerce_before_cart' , 'wc_minimum_order_amount' );
function wc_minimum_order_amount() {
$minimum = 5; //Qty product
if ( WC()->cart->cart_contents_count < $minimum ) {
$draught_links = array();
foreach(WC()->cart->get_cart() as $cart_item_key => $values ) {
$_product = $values['data'];
$terms = get_the_terms( $_product->id, 'product_cat' );
foreach ($terms as $term) {
$draught_links[] = $term->name;
}
}
if (in_array("Noten", $draught_links)){
$on_draught = true;
}else{
$on_draught = false;
}
if( is_cart() ) {
if($on_draught){
wc_print_notice(
sprintf( 'Bitte beachte die Mindestbestellmenge. Du brauchst mindestens %s Notenexemplare pro Arrangement. Aktuell hast du %s Stück in deinem Warenkorb.' ,
$minimum ,
WC()->cart->cart_contents_count
), 'error'
);
}
} else {
if($on_draught){
wc_add_notice(
sprintf( 'Bitte beachte die Mindestbestellmenge. Du brauchst mindestens %s Notenexemplare pro Arrangement. Aktuell hast du %s Stück in deinem Warenkorb.' ,
$minimum ,
WC()->cart->cart_contents_count
), 'error'
);
}
}
}
}
例如，如果我有两种属于同一产品类别的产品（A和B），并将该类别的最小数量设置为5，则在这种情况下不会出现给客户的错误消息：
该类别的每件产品我需要的最小数量为 5 个。
您知道如何更改和优化以下代码吗？
自 WooCommerce 3 以来，您的实际代码已过时且不方便......有多种方法：
1）。 最好的方法： 设置产品级别的最低数量（针对产品类别）：
// On single product pages
add_filter( 'woocommerce_quantity_input_args', 'min_qty_filter_callback', 20, 2 );
function min_qty_filter_callback( $args, $product ) {
$categories = array('Noten'); // The targeted product category(ies)
$min_qty = 5; // The minimum product quantity
$product_id = $product->is_type('variation') ? $product->get_parent_id() : $product->get_id();
if( has_term( $categories, 'product_cat', $product_id ) ){
$args['min_value'] = $min_qty;
}
return $args;
}
// On shop and archives pages
add_filter( 'woocommerce_loop_add_to_cart_args', 'min_qty_loop_add_to_cart_args', 10, 2 );
function min_qty_loop_add_to_cart_args( $args, $product ) {
$categories = array('Noten'); // The targeted product category
$min_qty = 5; // The minimum product quantity
$product_id = $product->get_id();
if( has_term( $categories, 'product_cat', $product_id ) ){
$args['quantity'] = $min_qty;
}
return $args;
}
代码位于活动子主题（或活动主题）的functions.php 文件中。已测试并工作。
2）。 替代方法：检查购物车项目并显示错误消息（类似于您的代码）：
add_action( 'woocommerce_check_cart_items', 'wc_min_item_required_qty' );
function wc_min_item_required_qty() {
$categories = array('Noten'); // The targeted product category
$min_item_qty = 5; // Minimum Qty required (for each item)
$display_error = false; // Initializing
// Loop through cart items
foreach(WC()->cart->get_cart() as $cart_item ) {
$item_quantity = $cart_item['quantity']; // Cart item quantity
$product_id = $cart_item['product_id']; // The product ID
// For cart items remaining to "Noten" producct category
if( has_term( $categories, 'product_cat', $product_id ) && $item_quantity < $min_item_qty ) {
wc_clear_notices(); // Clear all other notices
// Add an error notice (and avoid checkout).
wc_add_notice( sprintf( 'Bitte beachte die Mindestbestellmenge. Du brauchst mindestens %s Notenexemplare pro Arrangement. Aktuell hast du %s Stück in deinem Warenkorb.', $min_item_qty , $item_quantity ), 'error' );
break; // Stop the loop
}
}
}
代码位于活动子主题（或活动主题）的functions.php 文件中。已测试并工作。
为了使其也适用于父产品类别，您还需要添加此自定义功能：
// Custom conditional function that handle parent product categories too
function has_product_categories( $categories, $product_id = 0 ) {
$parent_term_ids = $categories_ids = array(); // Initializing
$taxonomy = 'product_cat';
$product_id = $product_id == 0 ? get_the_id() : $product_id;
if( is_string( $categories ) ) {
$categories = (array) $categories; // Convert string to array
}
// Convert categories term names and slugs to categories term ids
foreach ( $categories as $category ){
$result = (array) term_exists( $category, $taxonomy );
if ( ! empty( $result ) ) {
$categories_ids[] = reset($result);
}
}
// Loop through the current product category terms to get only parent main category term
foreach( get_the_terms( $product_id, $taxonomy ) as $term ){
if( $term->parent > 0 ){
$parent_term_ids[] = $term->parent; // Set the parent product category
$parent_term_ids[] = $term->term_id; // (and the child)
} else {
$parent_term_ids[] = $term->term_id; // It is the Main category term and we set it.
}
}
return array_intersect( $categories_ids, array_unique($parent_term_ids) ) ? true : false;
}
代码位于活动子主题（或活动主题）的functions.php 文件中。已测试并工作。
然后在现有代码中，您将替换：
has_term( $category, 'product_cat', $product_id )
由
has_product_categories( $category, $product_id )
这也将允许您处理父产品类别。
要使其适用于特定产品类别项目总数，请改用此代码：
add_action( 'woocommerce_check_cart_items', 'wc_min_item_required_qty' );
function wc_min_item_required_qty() {
$categories = '30'; // The targeted product category slug or ID
$max_item_qty = 10; // Minimum Qty required (for each item)
$display_error = false; // Initializing
// Loop through cart items
foreach(WC()->cart->get_cart() as $cart_item ) {
$product_id = $cart_item['product_id']; // The product ID
if( has_term( $categories, 'product_cat', $product_id )) {
$item_quantity += $cart_item['quantity']; // Cart item quantity
}
// For cart items remaining to "Pizza" product category
if( has_term( $categories, 'product_cat', $product_id ) && $item_quantity > $max_item_qty ) {
wc_clear_notices(); // Clear all other notices
// Add an error notice (and avoid checkout).
wc_add_notice( sprintf( 'We can only take orders of up to 10 burgers per customer', $max_item_qty , $item_quantity ), 'error' );
break; // Stop the loop
}
}
}
$categories = array('Noten'); // The targeted product category
是添加 2 个类别的方法吗？
喜欢：
$categories = array('16,24'); // The targeted product category