CPT URL Rewrite

gistfile1.txt

add_action( 'init', 'mt_create_menus' );
function mt_create_menus() {
  
  $labels = array(
    'name' => _x('Food Menus', 'post type general name'),
    'singular_name' => _x('Food Menu', 'post type singular name'),
    'add_new' => _x('Add New', 'Food Menu'),
    'add_new_item' => __('Add New Food Menu'),
    'edit_item' => __('Edit Food Menu'),
    'new_item' => __('New Food Menu'),
    'view_item' => __('View Food Menu'),
    'search_items' => __('Search Food Menus'),
    'not_found' =>  __('No food menus found'),
    'not_found_in_trash' => __('No food menus found in Trash'), 
    'parent_item_colon' => ''
  );
  
  $args = array(
    'labels' => $labels,
    'supports' => array('title','page-attributes'),
    'hierarchical' => false,
    'public' => true,
    'has_archive' => false,
    'capability_type' => 'page',
    'rewrite' => false,
    'query_var' => 'mt_menu',
  );

  register_post_type('mt_menu',$args);
}

// Rewrite rules
function add_rewrite_rules() {
  global $wp_rewrite;

  $wp_rewrite->add_rewrite_tag('%mt_menu%', '([^/]+)', 'mt_menu=');
  
  //the root of the post type, ie mysite.com/movie-reviews/ will be the landing page for the post type
  $permalink_prefix = 'location';
  //the permalink structure for the post type that will be appended to the prefix, mysite.com/movie-reviews/2010/11/25/test-movie-review/
  $permalink_structure = '%parent%/%mt_menu%/';
  
  //we use the WP_Rewrite class to generate all the endpoints WordPress can handle by default.
  $rewrite_rules = $wp_rewrite->generate_rewrite_rules($permalink_prefix.'/'.$permalink_structure, EP_ALL, true, true, true, true, true);
  
  //build a rewrite rule from just the prefix to be the base url for the post type
  $rewrite_rules = array_merge($wp_rewrite->generate_rewrite_rules($permalink_prefix), $rewrite_rules);
  $rewrite_rules[$permalink_prefix.'/?$'] = 'index.php?paged=1';
  foreach($rewrite_rules as $regex => $redirect) {
    if(strpos($redirect, 'attachment=') === false) {
      //add the post_type to the rewrite rule
      $redirect .= '&post_type=mt_menu';
    }
  
    //turn all of the $1, $2,... variables in the matching regex into $matches[] form
    if(0 < preg_match_all('@\$([0-9])@', $redirect, $matches)) {
      for($i = 0; $i < count($matches[0]); $i++) {
        $redirect = str_replace($matches[0][$i], '$matches['.$matches[1][$i].']', $redirect);
      }
    }
    //add the rewrite rule to wp_rewrite
    $wp_rewrite->add_rule($regex, $redirect, 'top');
  }
}

function filter_movie_review_link($permalink, $post) {
  if(('mt_menu' == $post->post_type) && '' != $permalink && !in_array($post->post_status, array('draft', 'pending', 'auto-draft')) ) {
    $rewritecode = array(
      '%parent%',
      '%mt_menu%'
    );

    $parent = get_field('field_53ff221fb785c', $post->ID);
    $parent = $parent->post_name;

    $rewritereplace = array(
      $parent,
      $post->post_name,
    );
    $permalink = str_replace($rewritecode, $rewritereplace, '/location/%parent%/%mt_menu%/');
    $permalink = user_trailingslashit(home_url($permalink));
  }
  return $permalink;
}

add_action('init', 'add_rewrite_rules');
add_filter('post_type_link', 'filter_movie_review_link', 10, 2);