<?php
/*
 * Usage:
 *
 * [embed_post slug="my-post"]
 * [embed_post slug="my-post" full="false"]
 * [embed_post type="movie" slug="inception"]
 */
function peterwebdesign_embedded_post_shortcode( $attributes ) {
    // Extract shortcode attributes.
    extract(
        shortcode_atts(
            array(
                'type' => 'post',
                'slug' => '',
                'full' => true
            ),
            $attributes
        )
    );
    // Setup arguments.
    $args = array(
        // Get post type ("post" by default).
        'post_type' => $type,
        // Get post by slug.
        'name' => $slug
    );
    // Instantiate new query instance.
    $my_query = new WP_Query( $args );
    // Check that we have query results.
    if ( $my_query->have_posts() ) {

        // Begin generating markup.
        $output = '<section class="embedded-post">';

        // Start looping over the query results.
        while ( $my_query->have_posts() ) {

            $my_query->the_post();
            // Add title to output.
            $output .= '<h2 class="embedded-post-title">';
                $output .= get_the_title();
            $output .= '</h2>';
            // Get full post if `$full` is true, otherwise, show the get excerpt
            if ( 'true' === $full ) {
                // Add full content to output.
                $output .= '<div class="embedded-post-content">';
                    $output .= get_the_content();
                $output .= '</div>';
            } else {
                // Add excerpt to output.
                $output .= '<div class="embedded-post-excerpt">';
                    $output .= get_the_excerpt();
                    $output .= '&hellip; <a href="' . get_permalink() . '">' . __( 'See full post', 'tutsplus' ) . ' &raquo;</a>';
                $output .= '</div>';
            }
        }
        // End generating markup.
        $output .= '</section>';
    } else {
        // Output message to let user know that no posts were found.
        $output = '<section class="embedded-post-error">';
            $output .= '<p>' . __( 'No posts found.', 'tutsplus' ) . '</p>';
        $output .= '</section>';
    }
    wp_reset_postdata();
    return $output;
}
add_shortcode( 'embed_post', 'peterwebdesign_embedded_post_shortcode' );
?>