だからあなたはこのようなことを意味しますか？
[トラックの追加]をクリックすると、次のようになります。
単純なjquery関数を持つフィールドを追加および削除するメタボックスを作成することで目的が達成され、データが単一のメタ行にデータの配列として保存される場合、次のようになります。
add_action( 'add_meta_boxes', 'dynamic_add_custom_box' );
/* Do something with the data entered */
add_action( 'save_post', 'dynamic_save_postdata' );
/* Adds a box to the main column on the Post and Page edit screens */
function dynamic_add_custom_box() {
add_meta_box(
'dynamic_sectionid',
__( 'My Tracks', 'myplugin_textdomain' ),
'dynamic_inner_custom_box',
'post');
}
/* Prints the box content */
function dynamic_inner_custom_box() {
global $post;
// Use nonce for verification
wp_nonce_field( plugin_basename( __FILE__ ), 'dynamicMeta_noncename' );
?>
<div id="meta_inner">
<?php
//get the saved meta as an array
$songs = get_post_meta($post->ID,'songs',false);
$c = 0;
if ( count( $songs ) > 0 ) {
foreach( $songs as $track ) {
if ( isset( $track['title'] ) || isset( $track['track'] ) ) {
printf( '<p>Song Title <input type="text" name="songs[%1$s][title]" value="%2$s" /> -- Track number : <input type="text" name="songs[%1$s][track]" value="%3$s" /><span class="remove">%4$s</span></p>', $c, $track['title'], $track['track'], __( 'Remove Track' ) );
$c = $c +1;
}
}
}
?>
<span id="here"></span>
<span class="add"><?php _e('Add Tracks'); ?></span>
<script>
var $ =jQuery.noConflict();
$(document).ready(function() {
var count = <?php echo $c; ?>;
$(".add").click(function() {
count = count + 1;
$('#here').append('<p> Song Title <input type="text" name="songs['+count+'][title]" value="" /> -- Track number : <input type="text" name="songs['+count+'][track]" value="" /><span class="remove">Remove Track</span></p>' );
return false;
});
// The live() method was deprecated in jQuery version 1.7, and removed in version 1.9. Use the on() method instead. We can use .on
$(".remove").live('click', function() {
$(this).parent().remove();
});
});
</script>
</div><?php
}
/* When the post is saved, saves our custom data */
function dynamic_save_postdata( $post_id ) {
// verify if this is an auto save routine.
// If it is our form has not been submitted, so we dont want to do anything
if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE )
return;
// verify this came from the our screen and with proper authorization,
// because save_post can be triggered at other times
if ( !isset( $_POST['dynamicMeta_noncename'] ) )
return;
if ( !wp_verify_nonce( $_POST['dynamicMeta_noncename'], plugin_basename( __FILE__ ) ) )
return;
// OK, we're authenticated: we need to find and save the data
$songs = $_POST['songs'];
update_post_meta($post_id,'songs',$songs);
}