针对特定产品类别及其在 WooCommerce 中的子项

Question

我正在尝试在商店内容之前添加自定义内容，但只有在查看特定类别的产品时才会使用此类别的子项。

鞋子类别有：主类别 - 'events'，子类别 - 'seminarium'，'course' 和 'training'.

add_action( 'woocommerce_before_shop_loop', 'eventsTerms', 18);
function eventsTerms() {

  $term = get_term_by('name', 'events', 'product_cat');
  $term_id = $term->term_id;
  $taxonomyName = 'product_cat';
  $termChildren = get_term_children( $term_id, $taxonomyName );

foreach ( $termChildren as $child ) {
  $_term = get_term_by( 'id', $child, $taxonomyName );
  $childTerms= ', "' . '' . $_term->name . '"';

  echo $childTerms; // only to see is ok

}

    if ( is_product_category( array("events", $childTerms) ) ) {
    global $product;
    wp_list_categories( 
      array(
          'show_option_all' => 'show all',
          'taxonomy' => 'product_cat',
          'style' => 'none',
          'separator' => '',
          'hide_empty' => 0,
      ));

  }

}

$childTerms returns 所有子类别名称，所以我想使用 is_product_category 带数组的条件标记，但我的代码仍然只适用于主类别 "events"。

错误在哪里？

编辑 1

好的，我认为它不起作用的原因是 implode 不能在 is_product_category() 参数中使用。所以我正在尝试 json_encode 那样：

add_action( 'woocommerce_before_shop_loop', 'eventsTerms', 18);
function eventsTerms() {

  $term = get_term_by('name', 'events', 'product_cat');
  $term_id = $term->term_id;
  $taxonomyName = 'product_cat';
  $termChildren = get_term_children( $term_id, $taxonomyName );

foreach ( $termChildren as $child ) {
  $_term = get_term_by( 'id', $child, $taxonomyName );
  $childTerms[] = " '".$_term->name."'";
}

$x = implode(",", $childTerms);

$y = json_encode($x);

echo $y; // output as " 'seminarium', 'course', 'training'"

$y2 = preg_replace('/"([a-zA-Z]+[a-zA-Z0-9_]*)":/',':', $x); // removing qutes by preg_replace

echo $y2; // output as 'seminarium', 'course', 'training'

    if ( is_product_category( array('events', $y) ) ) {
    global $product;
    wp_list_categories( 
      array(
          'show_option_all' => 0,
          'taxonomy' => 'product_cat',
          'style' => 'none',
          'separator' => '',
          'hide_empty' => 0,
          'child_of' => $term_id,
      ));

  }

}

Answer 1

函数 get_term_by() 不适用于 "id"、，而是 "term_id" （或 "slug" 或 "name")。
函数 get_term_children() 给出了一个包含 个术语 ID 的数组。
条件函数is_product_category() accepts an array of term names, slugs or Ids, as it's based on is_tax()函数.

你让事情变得比它们应该的更复杂，你不需要 foreach 循环。

定位特定产品类别及其相关子项：

1) 在存档页面上：

$term_slug = 'events';
$taxonomy  = 'product_cat';

$term_id   = get_term_by( 'slug', $term_slug, $taxonomy )->term_id; // Get the term ID
$child_ids = get_term_children( $term_id, $taxonomy ); // Get the children terms IDs
$terms_ids = array_merge( $child_ids, array($term_id) ); // an array of all term IDs (main term Id and it's children)

if ( is_product_category( $terms_ids ) ) {
    // Do something
}

所以在你的代码中：

add_action( 'woocommerce_before_shop_loop', 'eventsTerms', 18 );
function eventsTerms() {
    $term_slug = 'events';
    $taxonomy  = 'product_cat';

    $term_id   = get_term_by( 'slug', $term_slug, $taxonomy )->term_id; // Get the term ID
    $child_ids = get_term_children( $term_id, $taxonomy ); // Get the children terms IDs
    $terms_ids = array_merge( $child_ids, array($term_id) ); // an array of all term IDs (main term Id and it's children)

    if ( is_product_category( $terms_ids ) ) {
        global $product;
        
        wp_list_categories( array(
            'show_option_all' => 'show all',
            'taxonomy'        => 'product_cat',
            'style'           => 'none',
            'separator'       => '',
            'hide_empty'      => 0,
            'child_of'        => $term_id,
        ) );
    }
}

代码进入您的活动子主题（活动活动主题）的 functions.php 文件。 已测试并有效。

2) 在产品页面、购物车项目或订单项目上 （而不是存档页面）:

您将使用条件函数 has_term()，它还接受一组术语名称、slug 或 ID （第三个参数（可选）是 post ID 或WooCommerce 产品的产品 ID）：

$term_slug = 'events';
$taxonomy  = 'product_cat';

$term_id   = get_term_by( 'slug', $term_slug, $taxonomy )->term_id; // Get the term ID
$child_ids = get_term_children( $term_id, $taxonomy ); // Get the children terms IDs
$terms_ids = array_merge( $child_ids, [$term_id] ); // an array of all term IDs (main term Id and it's children)

if ( has_term( $terms_ids, $taxonomy, $product_id ) ) {
    // Do something
}

针对特定产品类别及其在 WooCommerce 中的子项

Target specific product category and it's children in WooCommerce

php

wordpress

custom-taxonomy

woocommerce

taxonomy-terms

定位特定产品类别及其相关子项：