如何在自定義帖子類型中添加自定義字段

我想在自定義帖子類型中添加自定義字段。我想在自定義帖子類型中添加一個文本字段，但我不知道該怎麼做。這是我在我的主題中的functions.php中實現的代碼。如何在自定義帖子類型中添加自定義字段

add_action('init', 'register_cpt_advert'); 

function register_cpt_advert() { 

$labels = array( 
    'name' => _x('Adverts', 'advert'), 
    'singular_name' => _x('Advert', 'advert'), 
    'add_new' => _x('Add New', 'advert'), 
    'add_new_item' => _x('Add New Advert', 'advert'), 
    'edit_item' => _x('Edit Advert', 'advert'), 
    'new_item' => _x('New Advert', 'advert'), 
    'view_item' => _x('View Advert', 'advert'), 
    'search_items' => _x('Search Adverts', 'advert'), 
    'not_found' => _x('No advert found', 'advert'), 
    'not_found_in_trash' => _x('No adverts found in Trash', 'advert'), 
    'parent_item_colon' => _x('Parent Advert:', 'advert'), 
    'menu_name' => _x('Adverts', 'advert'), 
); 

$args = array( 
    'labels' => $labels, 
    'hierarchical' => false, 
    'description' => 'Show image adverts on videos', 
    'supports' => array('title', 'thumbnail'), 
    //'taxonomies' => array('category', 'post_tag', 'page-category'), 
    'public' => false, 
    'show_ui' => true, 
    'show_in_menu' => true, 


    'show_in_nav_menus' => true, 
    'publicly_queryable' => true, 
    'exclude_from_search' => true, 
    'has_archive' => false, 
    'query_var' => false, 
    'can_export' => true, 
    'rewrite' => false, 
    'capability_type' => 'post' 
); 
register_post_type('advert', $args); 
}

來源

2012-08-02 sammyukavi

Place this code just below the code of your custom post type 

//code start 
add_action('add_meta_boxes', 'cd_meta_box_add'); 
function cd_meta_box_add() { 
//give name of your input field 
    add_meta_box('my-meta-box-id', 'Enter your input field title', 'cd_meta_box_cb', 'Adverts', 'normal', 'high'); 
} 
function cd_meta_box_cb($post) { 
    $values = get_post_custom($post->ID); 
    $text = isset($values['my_meta_box_text']) ? esc_attr($values['my_meta_box_text'][0]) : ''; 
    wp_nonce_field('my_meta_box_nonce', 'meta_box_nonce'); 
    ?> 
    <p> 

     <label for="my_meta_box_text">Title</label> 
     <input type="text" name="my_meta_box_text" maxlength="55" id="my_meta_box_text" value="<?php echo $text; ?>" style="width: 30%;" /> 
    </p> 
<?php 
} 
add_action('save_post', 'cd_meta_box_save'); 
function cd_meta_box_save($post_id) { 
    // Bail if we're doing an auto save 
    if(defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) return; 
    // if our nonce isn't there, or we can't verify it, bail 
    if(!isset($_POST['meta_box_nonce']) || !wp_verify_nonce($_POST['meta_box_nonce'], 'my_meta_box_nonce')) return; 
    // if our current user can't edit this post, bail 
    if(!current_user_can('edit_post', $post_id)) return; 
    // now we can actually save the data 
    $allowed = array(
     'a' => array(// on allow a tags 
      'href' => array() // and those anchords can only have href attribute 
     ) 
    ); 
    // Probably a good idea to make sure your data is set 
    if(isset($_POST['my_meta_box_text'])) 
     update_post_meta($post_id, 'my_meta_box_text', wp_kses($_POST['my_meta_box_text'], $allowed)); 
} 
//code end

來源

2014-12-04 12:53:38