Need to assign custom taxonomy to the pages with specific php template - Wordpress

Question

I created in Wordpress custom taxonomy called 'consultants_category' and assigned it to custom post type. Now I need to assign this taxonomy to pages with specific php template - 'page-consultants.php'.

Wordpress have function to assign custom taxonomy called 'register_taxonomy_for_object_type' (https://developer.wordpress.org/reference/functions/register_taxonomy_for_object_type/) but when I use it - my taxonomy (custom categories) are shown on the backend of all wp pages and I don't know how to take pages only with specific page template.

Here is rough idea of what I need to achive (get all wp pages -> filter all pages to get pages only with specific php template -> assign custom taxonomy only to filtered pages ):

function add_taxonomies_to_pages() {
$pages = get_pages(
     array(
    'meta_key' => '_wp_page_template',
    'meta_value' => 'page-consultants.php'
       )
);

foreach($pages as $page){
 register_taxonomy_for_object_type( 'consultants_category', 'pages');
}
}

add_action( 'init', 'add_taxonomies_to_pages' );

Would appreciate any help. Thanks.

Answer 1

Developer by saeed Hanif

To assign a custom taxonomy to pages in WordPress and display those pages using a specific template, you can follow these steps:

Create a custom taxonomy:

In your theme's functions.php file, use the register_taxonomy() function to create a custom taxonomy. For example:

function create_page_taxonomy() {
  $labels = array(
    'name'              => _x( 'Page Types', 'taxonomy general name' ),
    'singular_name'     => _x( 'Page Type', 'taxonomy singular name' ),
    'search_items'      => __( 'Search Page Types' ),
    'all_items'         => __( 'All Page Types' ),
    'parent_item'       => __( 'Parent Page Type' ),
    'parent_item_colon' => __( 'Parent Page Type:' ),
    'edit_item'         => __( 'Edit Page Type' ),
    'update_item'       => __( 'Update Page Type' ),
    'add_new_item'      => __( 'Add New Page Type' ),
    'new_item_name'     => __( 'New Page Type Name' ),
    'menu_name'         => __( 'Page Types' ),
  );

  $args = array(
    'hierarchical'      => true,
    'labels'            => $labels,
    'show_ui'           => true,
    'show_admin_column' => true,
    'query_var'         => true,
    'rewrite'           => array( 'slug' => 'page-type' ),
  );

  register_taxonomy( 'page_type', array( 'page' ), $args );
}
add_action( 'init', 'create_page_taxonomy', 0 );

Add the code to display the pages with the custom taxonomy in the body of the template file:

$page_type = get_query_var( 'page_type' );
$pages = get_pages( array(
  'tax_query' => array(
    array(
      'taxonomy' => 'page_type',
      'field' => 'slug',
      'terms' => $page_type,
    ),
  ),
) );

foreach ( $pages as $page ) {
  // Output page title and content
  echo '<h2>' . $page->post_title . '</h2>';
  echo apply_filters( 'the_content', $page->post_content );
}