In this example you will learn how to add Helpful to an existing Post Type (here FAQ), including its own heading.

helpful-faq-example.php

<?php
/**
 * In this example you will learn how to add Helpful to an
 * existing Post Type (here FAQ), including its own heading.
 *
 * @package Helpful Example
 * @author  Pixelbart
 */

$args = array(
	'post_type'      => 'faq', /* custom post type */
	'post_status'    => 'publish',
	'fields'         => 'ids', /* only retrieves ids, makes queries faster */
	'posts_per_page' => -1,
);

$query = new WP_Query( $args );

if ( $query->found_posts ) {

	foreach ( $query->posts as $post_id ) :

		/** 
		 * Some variables
		 */
		$post    = get_post( $post_id );
		$title   = sprintf( 'How do you like %s?', $post->post_title );
		$content = apply_filters( 'the_content', $post->post_content );


		/**
		 * Here the Helpful Shortcode with its own heading and Post-ID is used.
		 */
		$shortcode = "[helpful heading=\"{$title}\" post_id=\"{$post->ID}\"]";

		echo '<div class="faq-item">';
			echo '<h2 class="faq-heading">' . $post->post_title . '</h2>';
			echo '<div class="faq-content">';
				echo $content . '<br>';
				echo do_shortcode( $shortcode ); /* echo helpful shortcode */
			echo '</div><!-- .faq-content -->';
		echo '</div><!-- .faq-item -->';

	endforeach;
}