我有一家 woocommerce 商店，其自定義分類為“運(yùn)動(dòng)”。該分類具有三個(gè)級(jí)別 - 父級(jí)、子級(jí)、子級(jí) - 例如：室內(nèi)運(yùn)動(dòng) > 競(jìng)技場(chǎng)運(yùn)動(dòng) > 籃球。如果用戶查看籃球項(xiàng)目，那么我希望相關(guān)產(chǎn)品優(yōu)先顯示其他籃球項(xiàng)目，然后在沒有足夠的籃球項(xiàng)目時(shí)回退到 Arena Sport 項(xiàng)目。因此，首先檢查最低級(jí)別 - Sub-Child，然后是 Child，然后是 Parent。
此外，我使用 RankMath，并且可以將分類術(shù)語(yǔ)設(shè)置為“主要”術(shù)語(yǔ)。因此，在上面的示例中，主要術(shù)語(yǔ)是籃球。主要術(shù)語(yǔ)幾乎總是子子術(shù)語(yǔ)，但也可能是子術(shù)語(yǔ)。
我結(jié)合了其他兩個(gè)問題的回答，代碼的工作原理是從運(yùn)動(dòng)分類中選擇相關(guān)產(chǎn)品。但它只看子級(jí)別，不考慮子子級(jí)別。因此，在上面的示例中，它選擇 Arena Sports 中的項(xiàng)目，而不優(yōu)先考慮籃球。
我應(yīng)該進(jìn)行哪些更改才能確保相關(guān)產(chǎn)品看到“主要”分類術(shù)語(yǔ)，然后首先查找具有該術(shù)語(yǔ)的產(chǎn)品，然后（如有必要）在術(shù)語(yǔ)層次結(jié)構(gòu)的下一級(jí)中查找？
感謝您提供的任何幫助或建議。
我在起草代碼時(shí)參考了這兩篇文章：
按兒童類別劃分的 WooCommerce 相關(guān)產(chǎn)品作為排名數(shù)學(xué)主要類別的后備
使用自定義分類法在 Woocommerce 中選擇相關(guān)產(chǎn)品
這是我當(dāng)前正在使用的代碼：
add_filter( 'woocommerce_related_products', 'related_products_from_rankmath_primary_esporte_taxonomy', 10, 3 );
function related_products_from_rankmath_primary_esporte_taxonomy( $related_posts, $product_id, $args ) {
$taxonomy = 'sport';
$term_ids = wp_get_post_terms( $product_id, $taxonomy, array( 'fields' => 'ids' ) );
$term_slugs = array();
if( count($term_ids) == 1 ) {
// Get children categories
$children_ids = get_term_children( reset($category_ids), $taxonomy );
// Loop through children terms Ids
foreach ( $children_ids as $tem_id ) {
$term_slugs[] = get_term_by( 'id', $tem_id, $taxonomy )->slug; // get the slug from each term Id
}
}
elseif( count( $term_ids ) > 1 ) {
// Get the primary taxonomy/term as saved by Rank Math SEO
$primary_tax_id = get_post_meta( $product_id, 'rank_math_primary_taxonomy', true );
$term_slugs[] = get_term_by( 'id', $primary_tax_id, $taxonomy )->slug; // get the slug from the term Id
}
if ( count( $term_ids ) > 0 ) {
foreach ( $term_ids as $term_id ) {
$term_slugs[] = get_term_by( 'id', $term_id, $taxonomy )->slug;
// Gets the IDs of child terms
$children_ids = get_term_children( $term_id, $taxonomy );
foreach ( $children_ids as $child_id ) {
$term_slugs[] = get_term_by( 'id', $child_id, $taxonomy )->slug; // Gets the slug of each child term
}
}
$related_posts = wc_get_products( array(
'status' => 'publish',
'tax_query' => array(
array(
'taxonomy' => $taxonomy,
'field' => 'slug',
'terms' => $term_slugs,
),
),
'return' => 'ids',
'exclude' => array( $product_id ),
'visibility' => 'catalog',
'limit' => -1,
) );
}
return $related_posts;
} 
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0
0
嘗試以下操作（已評(píng)論）：
// Utility function: Get related product Ids with a custom tax query
function get_related_posts_custom_query( $term_slugs, $taxonomy, $product_id ) {
return wc_get_products( array(
'limit' => -1,
'status' => 'publish',
'exclude' => array( $product_id ),
'visibility' => 'catalog',
'tax_query' => array(
array(
'taxonomy' => $taxonomy,
'field' => 'slug',
'terms' => $term_slugs,
),
),
'return' => 'ids',
) );
}
add_filter( 'woocommerce_related_products', 'related_products_from_rank_math_primary_category', 10, 3 );
function related_products_from_rank_math_primary_category( $related_posts, $product_id, $args ) {
// Get product categories set for the product
$category_ids = wp_get_post_terms($product_id, 'product_cat', array('fields' => 'ids') );
$term_slugs = array(); // Initializing
// 1). Only one product category => Fallback (Query products from "Sport" taxonomy)
if( count($category_ids) == 1 ) {
$taxonomy = 'sport';
// Get "Sport" the term set in the product
$sport_ids = wp_get_post_terms($product_id, $taxonomy, array('fields' => 'ids') );
$term = get_term_by( 'id', reset($sport_ids), $taxonomy );
$term_slugs[] = $term ->slug;
// Get related products from the "Sport" term
$related_posts = get_related_posts_custom_query( $term_slugs, $taxonomy, $product_id );
// IF there is not enough related products: Add the CHILDREN terms
if ( $related_posts 0 ) {
foreach ( $children_ids as $tem_id ) {
$term_slugs[] = get_term_by( 'id', $tem_id, $taxonomy )->slug; // get the slug from each term Id
}
// Get related products from the "Sport" terms
$related_posts = get_related_posts_custom_query( $term_slugs, $taxonomy, $product_id );
}
// IF there is not enough related products: Add the PARENT term
if ( $related_posts parent, $taxonomy );
$term_slugs[] = $parent ->slug;
// Get related products from the "Sport" terms
return get_related_posts_custom_query( $term_slugs, $taxonomy, $product_id );
} else {
return $related_posts;
}
} else {
return $related_posts;
}
}
// 2). More than one product categories => Rank Math SEO
elseif( count( $category_ids ) > 1 ) {
// Get the primary category/term as saved by Rank Math SEO
$primary_cat_id = get_post_meta( $product_id, 'rank_math_primary_product_cat', true );
$taxonomy = 'product_cat';
$term_slugs[] = get_term_by( 'id', $primary_cat_id, $taxonomy )->slug; // get the slug from the term Id
// Get related products from the category terms via Rank Math SEO
return get_related_posts_custom_query( $term_slugs, $taxonomy, $product_id );
}
return $related_posts;
}
它應(yīng)該可以工作。
