php – 多层次结构类别没有在wordpress分类中显示第三级层次结构

发布时间：2020-12-13 16:09:58 所属栏目：PHP教程来源：网络整理

导读：我有自定义帖子类型的3个级别的类别,类别,子类别和子子类别.我试图使用cmb2在下拉列表中显示这些类别,我的代码只显示2个级别的类别和缺少第三级. Category 1 -- child category 1 -- child category 2 -- addon category 1 -- addon category 2 -- child cat

我有自定义帖子类型的3个级别的类别,类别,子类别和子子类别.我试图使用cmb2在下拉列表中显示这些类别,我的代码只显示2个级别的类别和缺少第三级.

Category 1
 -- child category 1
 -- child category 2
    -- addon category 1
    -- addon category 2
 -- child category 3
 -- child category 4
    -- addon category 1
    -- addon category 2

Category 2
 -- child category 1
 -- child category 2
    -- addon category 1
    -- addon category 2
 -- child category 3
 -- child category 4
    -- addon category 1
    -- addon category 2

我正在使用cmb2在select2中使用multiselect选项获取这些类别.

并记下以下代码：

function gp_get_cmb_options_array_tax( $taxonomy,$args = array() ) {

    if ( empty( $taxonomy ) ) { return; }

    $defaults = array(
        'hide_empty' => 0,);

    $args = wp_parse_args( $args,$defaults );
    $terms = get_terms( $taxonomy,$args );

    /**
     * https://developer.wordpress.org/reference/functions/_get_term_hierarchy/
     */
    $hierarchy = _get_term_hierarchy( $taxonomy );

    $term_list = array();
    foreach ( $terms as $term ) {

        if( $term->parent ) {
            continue;
        }

        $term_list[ $term->term_id ] = $term->name;

        if( isset( $hierarchy[ $term->term_id ] ) ) {

            foreach ( $hierarchy[ $term->term_id ] as $child ) {

                $child = get_term( $child,$taxonomy );
                $term_list[ $child->term_id ] = $term->name . ' > ' . $child->name;

            }

        }

    }

    return $term_list;

}

showing only 2 levels and missing third level of categories

和下拉显示如下：

Category 1
Category 1 > child category 1
Category 1 > child category 2
Category 1 > child category 3
Category 1 > child category 4

Category 2
Category 2 > child category 1
Category 2 > child category 2
Category 2 > child category 3
Category 2 > child category 4

虽然应该表现得像

Category 1
Category 1 > child category 1
Category 1 > child category 2
Category 1 > child category 2 > addon category 1
Category 1 > child category 2 > addon category 2
Category 1 > child category 3
Category 1 > child category 4

解决方法

你只需要更深层次地循环：

function gp_get_cmb_options_array_tax( $taxonomy,$taxonomy );
                $term_list[ $child->term_id ] = $term->name . ' > ' . $child->name;

                if( !isset( $hierarchy[ $child->term_id ] ) )
                    continue;

                foreach ($hierarchy[ $child->term_id ] as $subchild) {

                    $subchild = get_term( $subchild,$taxonomy );
                    $term_list[ $subchild->term_id ] = $term->name . ' > ' . $child->name. ' > ' .$subchild->name;

                }

            }

        }

    }

    return $term_list;

}

（编辑：李大同）

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