我試圖限制 Woocommerce 商店的客戶一次只能從 1 個(gè)“供應(yīng)商”訂購產(chǎn)品。我通過稱為“供應(yīng)商”的自定義分類來定義“供應(yīng)商”。我正在嘗試的代碼只是出于某種原因限制了一切。function filter_woocommerce_add_to_cart_validation( $passed, $product_id, $quantity, $variation_id = null, $variations = null ) {// If passedif ( $passed ) {? ??? ? // If cart is NOT empty when a product is added? ? ?? ? if ( !WC()->cart->is_empty() ) {? ? ? ??? ? ? ? // Set vars? ? ? ? $current_product_tag_ids = array();? ? ? ? $in_cart_product_tag_ids = array();? ? ? ??? ? ? ? // Get current product categories via product_id? ? ? ? $current_product_tag_ids = wc_get_product_term_ids( $product_id, 'supplier' );? ? ? ? // Loop through cart items checking for product categories? ? ? ? foreach ( WC()->cart->get_cart() as $cart_item ) {? ? ? ? ? ? // Get product categories from product in cart via cart item product id? ? ? ? ? ? $in_cart_product_tag_ids = array_merge( $in_cart_product_tag_ids, wc_get_product_term_ids( $cart_item['product_id'], 'product_cat' ) );? ? ? ? }? ? ? ??? ? ? ? // Removes duplicate values? ? ? ? $in_cart_product_tag_ids = array_unique( $in_cart_product_tag_ids, SORT_NUMERIC );? ? ? ??? ? ? ? // Compare? ? ? ? $compare = array_diff( $current_product_tag_ids, $in_cart_product_tag_ids );? ? ? ??? ? ? ? // Result is NOT empty? ? ? ? if ( !empty ( $compare ) ) {? ? ? ? ? ? wc_add_notice( 'This product is with a different supplier. Please only order from 1 supplier at a time.', 'error' );? ? ? ? ? ? $passed = false;? ? ? ? }? ? }}return $passed;}add_filter( 'woocommerce_add_to_cart_validation', 'filter_woocommerce_add_to_cart_validation', 10, 5 );我并不是試圖將其限制為每個(gè)供應(yīng)商 1 個(gè)產(chǎn)品，而是試圖限制他們，以便他們每個(gè)訂單只能從 1 個(gè)供應(yīng)商處訂購產(chǎn)品。例如，一旦他們將供應(yīng)商“供應(yīng)商 1”的產(chǎn)品添加到購物籃中，他們將無法添加“供應(yīng)商 1”以外的任何其他供應(yīng)商的產(chǎn)品。
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以下內(nèi)容僅允許將來自一個(gè)“供應(yīng)商”的商品添加到購物車：
add_filter( 'woocommerce_add_to_cart_validation', 'only_one_supplier_by_order', 10, 2 );
function only_one_supplier_by_order( $passed, $product_id ) {
if ( WC()->cart->is_empty() )
return $passed;
$taxonomy = 'supplier';
$term_ids = wp_get_post_terms( $product_id, $taxonomy, ['fields' => 'ids']);
// Loop through cart items
foreach ( WC()->cart->get_cart() as $cart_item ) {
if( ! has_term( $term_ids, $taxonomy, $cart_item['product_id'] ) ) {
// Displaying a custom notice
wc_add_notice( __('This product is with a different supplier. Please only order from 1 supplier at a time.'), 'error' );
return false; // Avoid add to cart
}
}
return $passed;
}
現(xiàn)在，為了確?？蛻魺o法向購物車中的不同供應(yīng)商結(jié)帳，您可以添加以下內(nèi)容：
// To be sure (avoiding checkout)
add_action( 'woocommerce_check_cart_items', 'only_one_supplier_by_order_check' );
function only_one_supplier_by_order_check() {
$taxonomy = 'supplier';
$term_names = []; // Initializing
// Loop through cart items
foreach ( WC()->cart->get_cart() as $cart_item ) {
$terms = wp_get_post_terms( $cart_item['product_id'], $taxonomy );
if( ! empty($terms) ) {
$term = reset($terms);
$term_names[$term->term_id] = $term->name;
}
}
// Allow only one supplier in cart (avoid checkout for more than one
if( count( $term_names ) > 1 ) {
// Displaying a custom notice
wc_add_notice( __('Only items from one supplier at the time are allowed in cart'), 'error' );
}
}
代碼位于活動(dòng)子主題（或活動(dòng)主題）的functions.php 文件中。經(jīng)過測(cè)試并有效。
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