如何在分类页面上显示特写文章？

Question

我已经在文章页面上创建了一个功能帖子复选框。现在我要做的是，如果任何用户选中了该复选框，那么我必须在类别页面上显示该帖子。我试过在下面的代码，但它没有显示。

Code是在post上添加特性帖子

// add feature post on post page
function register_post_assets(){
    add_meta_box('featured-post', __('Featured Post'), 'add_featured_meta_box', 'post', 'advanced', 'high');
}
add_action('admin_init', 'register_post_assets', 1);

function add_featured_meta_box($post){
    $featured = get_post_meta($post->ID, '_featured-post', true);
    echo "".__('Feature this post?', 'foobar')."";
    echo "";
}

function save_featured_meta($post_id){
    // Do validation here for post_type, nonces, autosave, etc...
    if (isset($_REQUEST['_featured-post']))
        update_post_meta(esc_attr($post_id, '_featured-post', esc_attr($_REQUEST['_featured-post']))); 
        // I like using _ before my custom fields, so they are only editable within my form rather than the normal custom fields UI
}
add_action('save_post', 'save_featured_meta');
// end feature post with check box tag here

现在我在类别页面上显示

 if(is_category()){
    //check if category is a subcategory
    $this_category = get_queried_object();
    if( 0 != $this_category->parent ){ //if subcategory then display feature post
//displaying feature post here
    $args = array(
        'posts_per_page' => 5,
        'meta_key' => '_featured-post',
        'meta_value' => 1
    );

    $featured = new WP_Query($args);

    if ($featured->have_posts()): while($featured->have_posts()): $featured->the_post();
        the_title();
        the_content();
    endwhile; else:

    endif;

    }
}

Answer 1

问题不在类别页面中显示功能帖子的代码中。问题是在post中添加功能post元。

首先，默认情况下是回送( checked() )，因此必须传递false属性以防止回显。

function add_featured_meta_box($post){
    $featured = get_post_meta($post->ID, '_featured-post', true);
    echo "".__('Feature this post?', 'foobar')."";
    echo "";
}

其次，从esc_attr()中删除update_post_meta，您必须保存空值，因为$_POST中没有设置未选中的复选框，因此您必须清空它们的元字段。

function save_featured_meta($post_id){
    // Do validation here for post_type, nonces, autosave, etc...
       $featured_post = ( isset( $_POST['_featured-post'] ) ) ? $_POST['_featured-post'] : "";
       update_post_meta($post_id, '_featured-post', $featured_post); 
        // I like using _ before my custom fields, so they are only editable within my form rather than the normal custom fields UI
}
add_action('save_post', 'save_featured_meta');