我正在制作一个 wordpress 元框,我想知道元框的 html 部分如何设法找到保存功能。这是我正在使用的完整代码
<?php
function true_add_a_metabox() {
add_meta_box(
'true_metabox', // metabox ID, it also will be it id HTML attribute
'The Detailed Custom Meta Box', // title
'true_display_metabox', // this is a callback functions, which will be print HTML of our metabox
'post', // post type
'normal', // position of the screen where metabox shoul be displayed (normal, side, advanced)
'default' // priority over another metaboxes on this page (default, low, high, core)
);
}
add_action( 'admin_menu', 'true_add_a_metabox' );
function true_display_metabox($post) {
/*
* needs for security checks
*/
wp_nonce_field( basename( __FILE__ ), 'true_metabox_nonce' );
/*
* lets add a simple textarea field
*/
$html .= '<p><label>SEO title <input type="text" name="seotitle" value="' . get_post_meta($post->ID, 'true_title',true) . '" /></label></p>';
/*
* add a checkbox
*/
$html .= '<p><label><input type="checkbox" name="noindex"';
$html .= (get_post_meta($post->ID, 'true_noindex',true) == 'on') ? ' checked="checked"' : '';
$html .= ' /> Turn of page visibility for search engines</label></p>';
/*
* print all of this
*/
echo $html;
}
function true_save_post_meta( $post_id, $post ) {
/*
* Security checks
*/
if ( !isset( $_POST['true_metabox_nonce'] ) || !wp_verify_nonce( $_POST['true_metabox_nonce'], basename( __FILE__ ) ) )
return $post_id;
/*
* Check current user permissions
*/
$post_type = get_post_type_object( $post->post_type );
if ( !current_user_can( $post_type->can->edit_post, $post_id ) )
return $post_id;
/*
* Check if the autosave
*/
if ( defined('DOING_AUTOSAVE') && DOING_AUTOSAVE )
return $post_id;
if ($post->post_type == 'post') { // define your own post type here
update_post_meta($post_id, 'true_title', esc_attr($_POST['seotitle']));
update_post_meta($post_id, 'true_noindex', $_POST['noindex']);
}
return $post_id;
}
add_action( 'save_post', 'true_save_post_meta', 10, 2 );
?>
在生成 html 的函数中true_display_metabox
没有提到true_save_post_meta
哪个保存选项。谁能解释这个元框如何管理保存数据?