Domas

/**
 * A custom shortcode to display top rated posts.
 *
*/
function elm_custom_top_rated( $atts ) {

    $atts = shortcode_atts( array(
        'post_type' => '',
        'sort' => 'asc',
        'limit' => ''
    ), $atts );

    global $wpdb;

    // LIMIT posts
    $atts['limit'] = 10;

    if ( !$atts['post_type'] ) {
        $sql = "SELECT DISTINCT(post_id) FROM {$wpdb->prefix}elm_ratings";

        if ( $atts['limit'] )
            $sql .= " LIMIT {$atts['limit']}";

            $get_posts = $wpdb->get_results( $sql );
    } else {
        $sql = "SELECT DISTINCT(post_id) FROM {$wpdb->prefix}elm_ratings WHERE type = '{$atts['post_type']}'";

        if ( $atts['limit'] )
            $sql = "SELECT DISTINCT(post_id) FROM {$wpdb->prefix}elm_ratings WHERE type = '{$atts['post_type']}' LIMIT {$atts['limit']}";

        $get_posts = $wpdb->get_results( $sql );
    }

        if ( empty( $get_posts ) )
            return;

        foreach ( $get_posts as $k => $post ) {
            $average = intval( get_post_meta( $post->post_id, '_average_page_rating', TRUE ) );

            $posts[$k]['id']             = $post->post_id;
            $posts[$k]['average_rating'] = $average;
        }

        foreach ( $posts as $k => $v ) {
            $b[$k] = intval( $v['average_rating'] );
        }

        // Sort
        if ( $atts['sort'] == 'asc' ) {
            arsort( $b );
        } else {
            asort( $b );
        }

        $html = '';

        // HTML output
        if ( $b ) {
            foreach ( $b as $key => $val ) {
                $html .= '<div>';

                if ( has_post_thumbnail($posts[$key]['id']) ) {
                    $html .= '<div class="thumbnail">' . get_the_post_thumbnail( $posts[$key]['id'] ) . '</div>';
                }

                $html .= '<h2 class="title entry-title">'. get_the_title( $posts[$key]['id'] ) .'</h2>';
                $html .= apply_filters('the_excerpt', get_post_field( 'post_content', $posts[$key]['id'] ) );
                $html .= '<span class="viewmore"><a href="'. get_permalink( $posts[$key]['id'] ) .'">'. __('VIEW MORE') .'</a></span>';
                $html .= '<div class="clear"></div>';
                $html .= '<hr />';

                $html .= '</div>';
            }
        }

    return $html;
 }

add_shortcode( 'elm_custom_top_rated', 'elm_custom_top_rated' );