在页面上以自定义帖子类型显示元框

我有个问题。我正在尝试使用自定义数据库表向自定义帖子类型（插件中）添加一个元框textarea字段。meta框显示在自定义帖子类型中，保存和更新，但只是没有在页面（前端）上显示数据，我就是搞不懂。它显示文章的标题和内容，但不显示输入的数据。以下是我的meta box代码：

    //show metabox in post editing page
    add_action(\'add_meta_boxes\', \'bsp_add_metabox\' );

    function bsp_add_metabox() {
   // add_meta_box( $id, $title, $callback, $screen, $context, $priority );
  add_meta_box(\'bsp_mother_tongue\', \'Mother language\',\'bsp_mother_tongue_handler\', \'badge\',\'normal\');
   }
   //showing the meta box on admin page
  function bsp_mother_tongue_handler($post){

$value = get_post_custom($post->ID);
?>
<!--<label for="bsp_text_meta">Mother language </label><br />-->
<textarea id="bsp_text_meta" name="bsp_text_meta" class="widefat" style="overflow:auto; resize:none" rows="15"><?php if(isset($value[\'bsp_text_meta\'])) {echo $value[\'bsp_text_meta\'][0]; } ?></textarea>

//check if user can edit post
if( !current_user_can( \'edit_posts\' ) ) {
    return;  
}

if( isset($_POST[\'bsp_text_meta\'] )) {
    update_post_meta($post_id, \'bsp_text_meta\', esc_attr($_POST[\'bsp_text_meta\']));
}
}

badge是自定义帖子类型（slug）的名称。

// This function adds a meta box with a callback function of my_metabox_callback() function add_my_meta_box() { $var1 = \'this\'; $var2 = \'that\'; add_meta_box( \'metabox_id\', \'Metabox Title\', \'my_metabox_callback\', \'page\', \'normal\', \'low\', array( \'foo\' => $var1, \'bar\' => $var2) ); } // $post is an object containing the current post (as a $post object) // $metabox is an array with metabox id, title, callback, and args elements. // The args element is an array containing your passed $callback_args variables. function my_metabox_callback ( $post, $metabox ) { echo \'Last Modified: \' . $post->post_modified; // outputs last time the post was modified echo $metabox[\'args\'][\'foo\']; // outputs \'this\' echo $metabox[\'args\'][\'bar\']; // outputs \'that\' echo get_post_meta( $post->ID, \'my_custom_field\', true ); // outputs value of custom field }

function tsi_source_link($content) { if ( is_single() ) { global $post; $source_link = get_post_meta ($post->ID, \'syndication_permalink\', true); if ($source_link) { $content .= \'<div id="tsi-source-link" style="text-align:right;"><a href="\' . $source_link . \'" target="_blank">Read more ...</a></div>\'; } } return $content; } add_action(\'the_content\',\'tsi_source_link\');

小码农CODE

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