在（每个）类别页面中显示来自 WooCommerce 产品类别小部件的（相关）父类别和子类别

Question

当条件标签 (is_product_category) 同时在产品（和子）类别页面和商店页面中时，我无法应用以下代码。

希望任何人都可以提供帮助。

我的目标：每个产品类别页面（包括父子类别页面），小部件显示所有父子（语义相关）产品类别（不相关的产品类别需要隐藏在小部件中）。

请参阅code snippets 和code snippets

//* Used when the widget is displayed as a dropdown
add_filter('woocommerce_product_categories_widget_dropdown_args', 'appliances', 10, 10);
//* Used when the widget is displayed as a list
add_filter('woocommerce_product_categories_widget_args', 'appliances', 10, 10);
function appliances($cat_args) {
  if (is_product_category(75) || is_product_category($termchildren)) {
    // Create an array that will hold the ids that need to be included
    $include_terms = array();
    // Push the default term that you need to shown 
    array_push($include_terms, 75);
    // Create an array that will hold the ids that need to be included
    $termchildren = get_term_children(75, 'product_cat');
    }
  if (is_product_category(59) || is_product_category($termchildren)) {
    // Create an array that will hold the ids that need to be included
    $include_terms = array();
    // Push the default term that you need to shown 
    array_push($include_terms, 59);
    // Create an array that will hold the ids that need to be included
    $termchildren = get_term_children(59, 'product_cat');
    }
    foreach($termchildren as $child) {
      $term = get_term_by('id', $child, 'product_cat');
      array_push($include_terms, $term - > term_id);
    }
    // Finally pass the array
    $cat_args['include'] = $include_terms;
  }
  return $cat_args;
}

Answer 1

经过多天的反复试验，特此提供对我有用的代码 sn-p：

1. 使用了多个条件标签；
2. 仅显示每个产品类别中的相关类别（&child）；
3. 但不知道如何添加另一个过滤器 woocommerce_product_categories_widget_dropdown_args 以获取（如果）选中的下拉产品类别小部件；
4. 缺点：在产品类别小部件中“仅显示当前类别的子项”无法正常工作。 （由于 get_term_children 如下代码 sn-ps）。

希望在这里帮助任何人，并希望有人可以改进这个答案。

//* Used when the widget is displayed as an slug (aabc) / term_id (50) lists
add_filter( 'woocommerce_product_categories_widget_args', function ( $cat_args ) {
if ( is_product_category('aabc') || is_product_category('ddef') || is_product_category('gghi') || is_product_category('jjkl') || is_product_category('mmno') || is_product_category('ppqr') || is_product_category('sstu') || is_product_category('vvwx') || is_product_category('yyz')){
        // Create an array that will hold the ids that need to be included
        $include_terms = array();
        // Push the default term that you need to show 
        array_push( $include_terms, 50 );
        // Create an array that will hold the ids that need to be included
        $termchildren = get_term_children( 50, 'product_cat' );
        // Iterate over the terms found and add it to the array which holds the IDs to include
        foreach( $termchildren as $child ) {
            $term = get_term_by( 'id', $child, 'product_cat' );     
            array_push( $include_terms, $term->term_id );
            }
        // Finally pass the array
        $cat_args['include'] = $include_terms;
    }   
        return $cat_args;
    });
//* Used when the widget is displayed as an slug (abc) / term_id (60) lists
add_filter( 'woocommerce_product_categories_widget_args', function ( $cat_args ) {
if ( is_product_category('abc') || is_product_category('def') || is_product_category('ghi') || is_product_category('jkl') || is_product_category('mno') || is_product_category('pqr') || is_product_category('stu') || is_product_category('vwx') || is_product_category('yz')){
        // Create an array that will hold the ids that need to be included
        $include_terms = array();
        // Push the default term that you need to show 
        array_push( $include_terms, 60 );
        // Create an array that will hold the ids that need to be included
        $termchildren = get_term_children( 60, 'product_cat' );
        // Iterate over the terms found and add it to the array which holds the IDs to include
        foreach( $termchildren as $child ) {
            $term = get_term_by( 'id', $child, 'product_cat' );     
            array_push( $include_terms, $term->term_id );
            }
        // Finally pass the array
        $cat_args['include'] = $include_terms;
    }   
        return $cat_args;
    });