Wordpress 过滤器“wp_get_nav_menu_items”过滤器仅显示最后一个孩子

Question

我正在尝试将最新帖子添加到我的页脚菜单中，因此我使用了wp_get_nav_menu_items 过滤器。 我将跳过过滤器本身，就在函数结束时我得到一个帖子数组（2）。我已经向它们添加了所有附加数据（如 menu_parent_id 等）。问题是最终菜单仅包含最后一篇文章。即使我设置$items[0] = $items[1]; 以便两个项目相同。它不依赖于特定的菜单或帖子数量 - 总是仅最后一项。我将以可快速重现的格式保留代码：只是一个过滤器和 JSON 编码的项目：

add_filter('wp_get_nav_menu_items', function ($items, $menu, $args) {

return json_decode('[{
        "ID": 2576,
        "post_author": "3",
        "post_date": "2020-05-11 23:46:15",
        "post_date_gmt": "2020-05-11 23:46:15",
        "post_content": "",
        "post_title": "Testr",
        "post_excerpt": "",
        "post_status": "publish",
        "comment_status": "open",
        "ping_status": "open",
        "post_password": "",
        "post_name": "testr",
        "to_ping": "",
        "pinged": "",
        "post_modified": "2020-05-11 23:46:15",
        "post_modified_gmt": "2020-05-11 23:46:15",
        "post_content_filtered": "",
        "post_parent": 0,
        "guid": "http:\/\/mysite.local\/?p=2576",
        "menu_order": 0,
        "post_type": "post",
        "post_mime_type": "",
        "comment_count": "0",
        "filter": "raw",
        "db_id": 2576,
        "object_id": "",
        "menu_item_parent": "0",
        "url": "http:\/\/mysite.local\/?p=2576",
        "title": "Testr",
        "target": "",
        "classes": [],
        "type": "",
        "object": "",
        "attr_title": "",
        "description": "",
        "xfn": "",
        "status": ""
    }, {
        "ID": 3439,
        "post_author": "3",
        "post_date": "2020-05-11 23:28:49",
        "post_date_gmt": "2020-05-11 23:28:49",
        "post_content": "",
        "post_title": "Test",
        "post_excerpt": "",
        "post_status": "publish",
        "comment_status": "open",
        "ping_status": "open",
        "post_password": "",
        "post_name": "test-2",
        "to_ping": "",
        "pinged": "",
        "post_modified": "2020-05-11 23:28:49",
        "post_modified_gmt": "2020-05-11 23:28:49",
        "post_content_filtered": "",
        "post_parent": 0,
        "guid": "http:\/\/mysite.local\/?p=3439",
        "menu_order": 0,
        "post_type": "post",
        "post_mime_type": "",
        "comment_count": "0",
        "filter": "raw",
        "db_id": 3439,
        "object_id": "",
        "menu_item_parent": "0",
        "url": "http:\/\/mysite.local\/?p=3439",
        "title": "Test",
        "target": "",
        "classes": [],
        "type": "",
        "object": "",
        "attr_title": "",
        "description": "",
        "xfn": "",
        "status": ""
    }]');
});

以前有没有人遇到过这个问题，请帮忙，这让我发疯了:)

Answer 1

我发现了问题所在。每个菜单项必须包含 menu_order 属性，否则 wordpress 排序功能将一遍又一遍地覆盖相同的值，仅显示最后一篇文章。