Tipo de postagem personalizado do WordPress com campos personalizados

Em functions.php

/*  Being custom post types */

add_action('init', 'pdf_resources_register');

function pdf_resources_register() {

    $labels = array(
        'name' => _x('PDF Resource', 'post type general name'),
        'singular_name' => _x('PDF Resource', 'post type singular name'),
        'add_new' => _x('Add New', 'PDF Resource'),
        'add_new_item' => __('Add New PDF Resource'),
        'edit_item' => __('Edit PDF Resource'),
        'new_item' => __('New PDF Resource'),
        'view_item' => __('View PDF Resource'),
        'search_items' => __('Search PDF Resources'),
        'not_found' =>  __('Nothing found'),
        'not_found_in_trash' => __('Nothing found in Trash'),
        'parent_item_colon' => ''
    );

    $args = array(
        'labels' => $labels,
        'public' => true,
        'publicly_queryable' => true,
        'show_ui' => true,
        'query_var' => true,
        'rewrite' => true,
        'capability_type' => 'post',
        'hierarchical' => false,
        'menu_position' => null,
        'supports' => array('title','editor','thumbnail'),
        'rewrite' => array('slug' => 'pdf_resource', 'with_front' => FALSE)
      ); 

    register_post_type( 'pdf_resource' , $args );
}

add_action("admin_init", "admin_init");

function admin_init(){
  add_meta_box("pdf-meta", "Upload", "pdf_meta", "pdf_resource", "side", "low");
}

function pdf_meta() {
  global $post;
  $custom = get_post_custom($post->ID);
  $pdf_file = $custom["pdf_file"][0];
  echo '<input type="hidden" name="mytheme_meta_box_nonce" value="', wp_create_nonce(basename(__FILE__)), '" />';
  ?>
  <p><label>PDF File:</label><br />
  <input type="text" name="pdf_file" id="pdf_file" value="<?php echo $pdf_file; ?>" style="width:258px">
  <input type="button" name="pdf_button" id="pdf_button" value="Browse" style="width:258px"></p> 
  <?php
}

register_taxonomy("pdf_category", array("pdf_resource"), array("hierarchical" => true, "label" => "Categories", "singular_label" => "Category", "rewrite" => true));
register_taxonomy("pdf_color", array("pdf_resource"), array("hierarchical" => true, "label" => "Colors", "singular_label" => "Color", "rewrite" => true));

function my_admin_scripts() {
wp_enqueue_script('media-upload');
wp_enqueue_script('thickbox');
wp_register_script('my-upload', get_bloginfo('template_url') . '/js/my-script.js', array('jquery','media-upload','thickbox'));
wp_enqueue_script('my-upload');
} 
function my_admin_styles() {
wp_enqueue_style('thickbox');
}
add_action('admin_print_scripts', 'my_admin_scripts');
add_action('admin_print_styles', 'my_admin_styles');

    add_action('save_post', 'save_details');
    function save_details(){
      global $post;

      if( $post->post_type == "pdf_resource" ) {
            update_post_meta($post->ID, "pdf_file", $_POST["pdf_file"]);
      }

    }


    /*  End custom post types */

Em js / my-script.js, tenho o seguinte, que me permite fazer upload de um arquivo diretamente para o tipo de postagem personalizada.

jQuery(document).ready(function() {

jQuery('#pdf_button').click(function() {

 window.send_to_editor = function(html) {
     imgurl = jQuery(html).attr('src') || jQuery(html).find('img').attr('src') || jQuery(html).attr('href');
     jQuery('#pdf_file').val(imgurl);
     tb_remove();
 }

 tb_show('', 'media-upload.php?type=image&TB_iframe=true');
 return false;
});

});

Em index-fact-sheets.php, exibo o PDF em várias cores. Para ver a versão ao vivo disso, verifique <a href=” http://www.digitalkidsinitiative.com/resources/fact-sheets/”> Fichas técnicas </a> e <a href = ” http: // www. digitalkidsinitiative.com/resources/handouts/”>Handouts </a>

<?php
/*
Template Name: Fact Sheets Template
*/
?><?php get_header(); ?>
<div id="container">

        <div id="mainbar">

            <h1>Fact Sheets</h1>

            <?php 
              $temp = $wp_query;
              $paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
              $post_per_page = 100; // -1 shows all posts
              $args=array(
                'post_type' => 'pdf_resource',
                'orderby' => 'date',
                'order' => 'ASC',
                'paged' => $paged,
                'pdf_category' => 'fact-sheets',
                'posts_per_page' => $post_per_page
              );
              $wp_query = new WP_Query($args); 

              if( have_posts() ) : while ($wp_query->have_posts()) : $wp_query->the_post();
              $custom = get_post_custom($post->ID);
              $pdf_file = $custom["pdf_file"][0];
              $termsObjects = wp_get_object_terms($post->ID, 'pdf_color');
              $currentCustomCat = $termsObjects[0]->slug;

             ?>

            <div class="post-block<?php 
                if ($currentCustomCat == "teal") { echo " teal"; }
                if ($currentCustomCat == "orange") { echo " orange"; }
                if ($currentCustomCat == "green") { echo " green"; }
                if ($currentCustomCat == "light-orange") { echo " ltorange"; }
                if ($currentCustomCat == "light-green") { echo " ltgreen"; }
                if ($currentCustomCat == "red") { echo " red"; }
                ?>"> 
                <a href="<?php if ($pdf_file) { echo $pdf_file; } else { echo "#"; } ?>"><?php the_title(); ?><span>Download PDF</span></a>
                <?php edit_post_link('Edit', '<div class="post-edit-link">', '</div>'); ?>
            </div>



            <?php endwhile; else: ?>
            <?php endif; wp_reset_query(); $wp_query = $temp; the_post(); ?>

        </div>

        <div id="sidebar">

            <ul>
                <?php if ( is_active_sidebar( 'sidebar-widget-area' ) ) : ?>
                    <?php dynamic_sidebar( 'sidebar-widget-area' ); ?>
                <?php endif; ?>
            </ul>


        </div>

</div>

<?php get_footer(); ?>