How would I create a shortcode to display a custom post within a page or regular post?

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I would like to create a shortcode that will extract information for a custom post, and display it within a Page or regular Post.

Specific use case: I have a custom post type “Film” for a film festival website. The films are displayed with their own single-film.php, but occasionally the site owners want to write a post or page that mentions a particular film, and would like to be able to pull snippets of the info that has already been entered (eg, Film name, booking info, etc). This would go in a “box” at the bottom of the post, and I’d like to make it easy for them by providing some sort of shortcode.

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How would I go about doing this? Any recommended resources/tutorials to get me on the right track? What gotchas should I be aware of (eg, multiple loops in a post)?

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2 comments

  1. There are great tutorials about shortcodes all over the web and some good examples here

    but just to get you started:

    add_shortcode('film_q', 'film_shortcode_query');
function film_shortcode_query($atts, $content){
  extract(shortcode_atts(array( // a few default values
   'posts_per_page' => '1',
   'post_type' => 'film',
   'caller_get_posts' => 1)
   , $atts));

  global $post;

  $posts = new WP_Query($atts);
  $output = '';
    if ($posts->have_posts())
        while ($posts->have_posts()):
            $posts->the_post();
            $out = '<div class="film_box">
                <h4>Film Name: <a href="'.get_permalink().'" title="' . get_the_title() . '">'.get_the_title() .'</a></h4>
                <p class="Film_desc">'.get_the_content().'</p>';
                // add here more...
            $out .='</div>';
    /* these arguments will be available from inside $content
        get_permalink()  
        get_the_content()
        get_the_category_list(', ')
        get_the_title()
        and custom fields
        get_post_meta($post->ID, 'field_name', true);
    */
    endwhile;
  else
    return; // no posts found

  wp_reset_query();
  return html_entity_decode($out);
}

    and to use it enter in any post/page:

    [film_q p=FILM_POST_ID]

    just change FILM_POST_ID to the actual Film post ID.

    Hope this helps

  2. Try to start from this tutorial.

    In the callback function, do a custom_query (or use get_post) for the post and extract only the values that are relevant for you. (I.e: title, excerpt…)

    example shorcode

    [film id=10]

    Use id in your function to retrive the content of the film.