仅获取父类别 wordpress

Question

我正在尝试创建类别列表，但我只想列出父类别而不是子类别。我怎样才能做到这一点？到目前为止，我已经创建了一个列表，其中列出了所有父类别和子类别。

function categoryList() {


  $args = array(
  'orderby' => 'name',
  'order' => 'ASC'
  );
$categories = get_categories($args);

  $output .= '<ul class="category-list">';
  foreach($categories as $category) { 
          if ($category){
          $output .= '<li><a href="' . get_category_link( $category->term_id ) . '" title="' . sprintf( __( "View all posts in %s" ), $category->name ) . '" ' . '>' . $category->name.'</a>';
          }
  } 

  $output .= '</li>';
  $output .= '</ul>';

  return $output;

}

Answer 1

对于父类别，我假设您指的是顶级类别。这实际上记录在 Codex page for get_categories 上：你应该用 parent => 0

调用 get_categories

$args = array(
  'orderby' => 'name',
  'order' => 'ASC',
  'parent' => 0
);
$categories = get_categories($args);

Answer 2

仅列出 top-level（父级）在 wordpress 中的分类。选项 'hide_empty' => 0 确保列出空的 top-level 类别。

        $args = array(
                'orderby' => 'name',
                'order' => 'ASC',
                'parent'   => 0,
                'hide_empty' => 0,
                //'exclude'   => '7',
                // optional you can exclude parent categories from listing
         );

        $categories = get_categories( $args );

Answer 3

return 当前父类别的原生 Wordpress 解决方案，排除不需要的类别：

function primary_categories($arr_excluded_cats) {

if($arr_excluded_cats == null) {
    $arr_excluded_cats = array();
}

$post_cats = get_the_category();

$args = array(
  'orderby' => 'name',
  'order' => 'ASC',
  'parent' => 0
);

    $primary_categories = get_categories($args);

    foreach ($primary_categories as $primary_category) {

        foreach ($post_cats as $post_cat) {
            if(($primary_category->slug == $post_cat->slug) && (!in_array($primary_category->slug, $arr_excluded_cats))) {
                return $primary_category->slug;
            }
        }
    }
}

//if you have more than two parent categories associated with the post, you can delete the ones you don't want here
$dont_return_these = array(
        'receitas','enciclopedico'
    );

//use the function like this:
echo primary_categories($dont_return_these);

评论：

如果 post 只有一个父类别，请传递 null 而不是数组
如果你想要另一个输出而不是 slug，请将其更改为 return $primary_category-> slug;

Answer 4

使用这个：

$categories = get_categories( [ 'parent'=> id_parent ,'hide_empty' => 0,] );

Answer 5

下面的代码会给我们父猫的名字和 URL。

function ns_primary_cat() {
  $cat_now = get_the_category();
  $cat_now = $cat_now[0];
  if ( 0 == $cat_now->category_parent ) {
     $catname = '<span class="category"><a href="' . get_category_link( $cat_now->term_id ) . '">' . $cat_now->name . '</a></span>';
  } else {
    $parent_id = $cat_now->category_parent;
    $parent_cat = get_category( $parent_id );
    $catname = '<span class="category"><a href="' . get_category_link( $parent_id ) . '">' . $parent_cat->name . '</a></span>';
  }
  return $catname;
}

仅获取父类别 wordpress

Get only parent categories wordpress

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