WordPressでプラグインなしの「リピーターメタボックス」の作成

Question

プラグインのタイプを使用せずにリピーターのメタボックスを作成したいと思います。

「メタボックス」はどのようにして「選択したテンプレート」に入れることができますか？

Answer 1

add_action('admin_init', 'gpm_add_meta_boxes', 2); 

function gpm_add_meta_boxes() { 
add_meta_box('gpminvoice-group', 'Custom Repeatable', 'Repeatable_meta_box_display', 'page', 'normal', 'default'); 
} 

function Repeatable_meta_box_display() { 
    global $post; 
    $gpminvoice_group = get_post_meta($post->ID, 'customdata_group', true); 
    wp_nonce_field('gpm_repeatable_meta_box_nonce', 'gpm_repeatable_meta_box_nonce'); 
    ?> 
    <script type="text/javascript"> 
    jQuery(document).ready(function($){ 
     $('#add-row').on('click', function() { 
      var row = $('.empty-row.screen-reader-text').clone(true); 
      row.removeClass('empty-row screen-reader-text'); 
      row.insertBefore('#repeatable-fieldset-one tbody>tr:last'); 
      return false; 
     }); 

     $('.remove-row').on('click', function() { 
      $(this).parents('tr').remove(); 
      return false; 
     }); 
    }); 
    </script> 
    <table id="repeatable-fieldset-one" width="100%"> 
    <tbody> 
    <?php 
    if ($gpminvoice_group) : 
     foreach ($gpminvoice_group as $field) { 
    ?> 
    <tr> 
     <td width="15%"> 
     <input type="text" placeholder="Title" name="TitleItem[]" value="<?php if($field['TitleItem'] != '') echo esc_attr($field['TitleItem']); ?>" /></td> 
     <td width="70%"> 
     <textarea placeholder="Description" cols="55" rows="5" name="TitleDescription[]"> <?php if ($field['TitleDescription'] != '') echo esc_attr($field['TitleDescription']); ?> </textarea></td> 
     <td width="15%"><a class="button remove-row" href="#1">Remove</a></td> 
    </tr> 
    <?php 
    } 
    else : 
    // show a blank one 
    ?> 
    <tr> 
     <td> 
     <input type="text" placeholder="Title" title="Title" name="TitleItem[]" /></td> 
     <td> 
      <textarea placeholder="Description" name="TitleDescription[]" cols="55" rows="5"> </textarea> 
      </td> 
     <td><a class="button cmb-remove-row-button button-disabled" href="#">Remove</a></td> 
    </tr> 
    <?php endif; ?> 

    <!-- empty hidden one for jQuery --> 
    <tr class="empty-row screen-reader-text"> 
     <td> 
     <input type="text" placeholder="Title" name="TitleItem[]"/></td> 
     <td> 
      <textarea placeholder="Description" cols="55" rows="5" name="TitleDescription[]"></textarea> 
      </td> 
     <td><a class="button remove-row" href="#">Remove</a></td> 
    </tr> 
    </tbody> 
</table> 
<p><a id="add-row" class="button" href="#">Add another</a></p> 
<?php 
} 
add_action('save_post', 'custom_repeatable_meta_box_save'); 
function custom_repeatable_meta_box_save($post_id) { 
    if (! isset($_POST['gpm_repeatable_meta_box_nonce']) || 
    ! wp_verify_nonce($_POST['gpm_repeatable_meta_box_nonce'], 'gpm_repeatable_meta_box_nonce')) 
     return; 

    if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) 
     return; 

    if (!current_user_can('edit_post', $post_id)) 
     return; 

    $old = get_post_meta($post_id, 'customdata_group', true); 
    $new = array(); 
    $invoiceItems = $_POST['TitleItem']; 
    $prices = $_POST['TitleDescription']; 
    $count = count($invoiceItems); 
    for ($i = 0; $i < $count; $i++) { 
     if ($invoiceItems[$i] != '') : 
      $new[$i]['TitleItem'] = stripslashes(strip_tags($invoiceItems[$i])); 
      $new[$i]['TitleDescription'] = stripslashes($prices[$i]); // and however you want to sanitize 
     endif; 
    } 
    if (!empty($new) && $new != $old) 
     update_post_meta($post_id, 'customdata_group', $new); 
    elseif (empty($new) && $old) 
     delete_post_meta($post_id, 'customdata_group', $old); 


}