Populate Ninja Forms List with Custom Post Types

ninja-forms-cpt-list.php

<?php

function locations_prepopulate_forms($data, $field_id) {
	global $post;
	// Populates a specific list (by field ID) with the "locations" cpt's
    if($field_id == 27) {  
        $args = array(
            'post_type' => 'location',
        );
        $query = new WP_Query( $args );
        if ( $query->have_posts() ) {
            $data['list']['options']=array();
            while ( $query->have_posts() ) {
                $query->the_post();
                $data['list']['options'][] = array(
                        'label' =>  get_the_title(),
                        'value' =>  $post->post_name,
                        'calc'  =>  null,
                        'selected' => 0
                    );
            }
        } 
        wp_reset_postdata();
    }
    return $data;
}
add_filter('ninja_forms_field','locations_prepopulate_forms', 10, 2);