Question

我在这个论坛上搜索了可能的解决方案，但我没有得到任何有效的方法。也许我做错了。

这是我到目前为止尝试过的代码

$parent_categories = '' ;
$sub_categories = '';
$subcat = '';
$number = '';
$name = 'name';
$order = 'ASC';
$hide_empty=1;
$ids ='';

$args = array(
'number'     => $number,
'orderby'    => $orderby,
'order'      => $order,
'hide_empty' => $hide_empty,
'include'    => $ids,
'hierarchical'=> true, 
'parent'  => 0
);

 $product_categories = get_terms( 'product_cat', $args );


foreach ($product_categories as $cat) {
//var_dump($cat); echo '<br>';

if（$ cat-＆gt; slug =='essays'）{

    $args2 = array(
        'number'     => $number,
        'orderby'    => $orderby,
        'order'      => $order,
        'hide_empty' => $hide_empty,
        'include'    => $ids,
        'parent'     => $cat->term_id,
        'hierarchical'=> true, 
    );

    $sub_categories = get_terms( 'product_cat', $args2 );

    foreach ($sub_categories as $subcat) {
        $sub_categories = $sub_categories.$subcat->name.',';
    }

    $sub_categories = rtrim($sub_categories);
}
else
    $sub_categories= 'nomatch';

}

当我做echo $sub_categories。

我得到输出no match;

调试结果

我尝试删除if else条件以查看哪些有效，哪些无效。

$parent_categories = '' ;
$sub_categories = '';
$subcat = '';

$args = array(
'number'     => $number,
'orderby'    => $orderby,
'order'      => $order,
'hide_empty' => $hide_empty,
'include'    => $ids,
'hierarchical'=> true, 
'parent'  => 0
);

 $product_categories = get_terms( 'product_cat', $args );


foreach ($product_categories as $cat) {
//var_dump($cat); echo '<br>';

    $args2 = array(
        'number'     => $number,
        'orderby'    => $orderby,
        'order'      => $order,
        'hide_empty' => $hide_empty,
        'include'    => $ids,
        'parent'     => $cat->term_id,
        'hierarchical'=> true, 
    );

    $sub_categories = get_terms( 'product_cat', $args2 );

    foreach ($sub_categories as $subcat) {
        $sub_categories = $sub_categories.$subcat->name.',';
    }

    $sub_categories = rtrim($sub_categories);

代码会检索所有顶级类别的父类别和所有子类别。虽然我想要特定父类别的子类别。我尝试了parent=>$cat->term_id和$cat->term_taxonomy_id。结果仍然相同。我试过硬编码父的term_id但没用。

好的，我的首要任务是获取特定类别的子类别！

我的第二个问题是为什么if条件（用橙色标记）不能正常工作？

请让我知道我必须在这里进行哪些修改！

Ger Products子类别wordpress

0 个答案: