<?php
//query CPT by related CPT's title
$params = array(
    'limit' => -1,
    'where' => 'book_author.post_title = "J.R.R. Tolkien" '

              );
$pods = pods( 'book', $params );
if ( $pods->total() > 0 ) {
    while ( $pods->fetch() ) {
        echo $pods->display( 'post_title' );
        echo '<br>';
    }
}


<?php
/**
 * The template for displaying all single posts
 *
 * @package WordPress
 * @subpackage Twenty_Thirteen
 * @since Twenty Thirteen 1.0
 */

get_header(); ?>

    <div id="primary" class="content-area">
        <div id="content" class="site-content" role="main">

            <?php /* The loop */ ?>
            <?php while ( have_posts() ) : the_post();


             get_template_part( 'content', get_post_format() );
            echo get_post_meta( get_the_ID(), 'sub_title' );

                ?>
                <?php twentythirteen_post_nav(); ?>
                <?php comments_template(); ?>

            <?php endwhile; ?>

        </div><!-- #content -->
    </div><!-- #primary -->

<?php get_sidebar(); ?>
<?php get_footer(); ?>



<?php
/**
 * The main template file
 *
 * This is the most generic template file in a WordPress theme and one of the
 * two required files for a theme (the other being style.css).
 * It is used to display a page when nothing more specific matches a query.
 * For example, it puts together the home page when no home.php file exists.
 *
 * @link http://codex.wordpress.org/Template_Hierarchy
 *
 * @package WordPress
 * @subpackage Twenty_Thirteen
 * @since Twenty Thirteen 1.0
 */

get_header(); ?>

    <div id="primary" class="content-area">
        <div id="content" class="site-content" role="main">
        <?php
        $params = array( 'limit' => 2 );

        $pods = pods( 'book', $params);


        if ( $pods->total() > 0 ) {
            while( $pods->fetch( ) ) {
                echo '<a href="'.get_permalink( $pods->id() ).'">'.$pods->display( 'post_title' ).'</a>';
                echo '<br>';
            }
            echo $pods->pagination();
        }
        else {
            echo 'nope';
        }
?>

        </div><!-- #content -->
    </div><!-- #primary -->

<?php get_sidebar(); ?>
<?php get_footer(); ?>


<?php
print_r2( get_term( 2, 'genre' ) );
$params = array(
    'limit' => -1,
    'where' => 'genre.term_id = "2" '

              );
$pods = pods( 'book', 300 );

echo $pods->form( array( 'fields' => array( 'post_title', 'subtitle' ), 'fields_only' => true ) );


var_dump( pods_v( 'bar', $params, false, true ) );