WP REST – CUSTOM END POINT WITH PAGINATION

		
		
			

==============================================================


/**
 * REGISTERING LISTING SEARCH INTO REST API
 */

function listingsRegisterSearch() {
  register_rest_route('listings/v1', 'search', array(
    'methods' => WP_REST_SERVER::READABLE,
    'callback' => 'listingsSearchResults',
    'args' => array(
      
      'page' => array (
          'required' => false
      ),
    )

  ));
}

add_action('rest_api_init', 'listingsRegisterSearch');


function listingsSearchResults(WP_REST_Request $request){
  // get slug and page number
    // $slug = $request['slug'];
    $page = $request['page'];
    // $posts_per_page = 8;
     
    $args = array(
        'post_type' => array('listing'),
        's' => sanitize_text_field($request['term']),
        'posts_per_page'    => $posts_per_page,
        'paged'             => $page,
        'orderby'           => 'date',
        'order'             => 'desc',
    );
 // use WP_Query to get the results with pagination
    $query = new WP_Query( $args ); 

 // if no posts found return 
    if( empty($query->posts) ){
        // return new WP_Error( 'no_posts', __('No post found'), array( 'status' => 404 ) );
        $nothing = array();
        return $nothing;
    }


$results = array();

while($query->have_posts()) {
  $query->the_post();

  array_push($results, array(
    'title' => get_the_title(),
    'subTitlePrimo' => get_field('subtitle_primo'),
    'subTitleSecondo' => get_field('subtitle_secondo'),
    'subTitleTerzo' => get_field('subtitle_terzo'),
    'content' => get_the_content(),
    'postType' => get_post_type(),
    'authorName' => get_the_author()
  ));

}  

// set max number of pages and total num of posts
$max_pages = $query->max_num_pages;
$total = $query->found_posts;

// set headers and return response      
$response = new WP_REST_Response($results, 200);

$response->header( 'X-WP-Total', $total ); 
$response->header( 'X-WP-TotalPages', $max_pages );

return $response;

}


==============================================================