Custom post type URl Cutomization

Question

I am creating a custom CPT where I have customized CPT URL structure of CPT, I am using the rewrite rule for this but it is conflicting This is a Lessons CPT, and I want to remove lessons from the URL and if any category or subcategory is selected in the post then the URL structure should be parent category/child-category/post name, I have also customized the category URL structure where I want to remove lesson-category in this example:- http://localhost/custom_theme/lesson-category/california/ the URL should be like this http://localhost/custom_theme/california/

I have Custom Lessons CPT where I want to customize the URl structure Here is the scenario:-

I want to remove the lesson in Custom CPT - http://localhost/custom_theme/lesson/paino_lesson/ the URL should be like this http://localhost/custom_theme/paino_lesson/

if any category or subcategory is selected in the post then the URL structure should be parent category/child category/post name,

I want to remove the lesson category in this example:- http://localhost/custom_theme/lesson-category/california/ the URL should be like this http://localhost/custom_theme/california/

// START: CPT 'Lessons'

add_action('init', 'register_lessons_post_type'); function register_lessons_post_type() { $labels = array( 'name' => 'Lesson', 'singular_name' => 'Lesson', 'menu_name' => 'Lesson', 'add_new' => 'Add New Lesson', 'add_new_item' => 'Add New Lesson', 'edit_item' => 'Edit Lesson', 'new_item' => 'New Lesson', 'view_item' => 'View Lesson', 'view_items' => 'View Lessons', 'search_items' => 'Search Lessons', 'not_found' => 'No lesson found', 'not_found_in_trash' => 'No lesson found in trash', 'all_items' => 'All Lessons', 'archives' => 'Lessons', 'attributes' => 'Template', 'insert_into_item' => 'Insert into lesson', 'uploaded_to_this_item' => 'Uploaded to this lesson', 'filter_items_list' => 'Filter lessons list', 'items_list_navigation' => 'Lesson list navigation', 'items_list' => 'Lessons list', 'item_published' => 'Lesson published', 'item_published_privately' => 'Lesson published privately', 'item_reverted_to_draft' => 'Lesson reverted to draft', 'item_scheduled' => 'Lesson scheduled', 'item_updated' => 'Lesson updated', 'taxonomies' => array( 'lesson_category' ), // Link to the custom taxonomy ); $args = array( 'labels' => $labels, 'public' => true, 'has_archive' => true, 'rewrite' => array('slug' => '/%lesson_category%'), // Set the custom permalink structure 'menu_position' => 5, 'menu_icon' => 'dashicons-location-alt', 'supports' => array('title', 'editor', 'thumbnail','excerpt', 'custom-fields', 'elementor'), ); register_post_type('lessons', $args); } add_action('init', 'register_lesson_category_taxonomy'); function register_lesson_category_taxonomy() { $labels = array( 'name' => 'City', 'singular_name' => 'City', 'search_items' => 'Search City', 'all_items' => 'All Cities', 'parent_item' => 'Parent City or State', 'parent_item_colon' => 'Parent City or State:', 'edit_item' => 'Edit City', 'update_item' => 'Update City', 'add_new_item' => 'Add New City', 'new_item_name' => 'New City Name', 'menu_name' => 'Cities or Locations', ); $args = array( 'hierarchical' => true, 'labels' => $labels, 'show_ui' => true, 'show_admin_column' => true, 'query_var' => true, 'rewrite' => array( 'slug' => '/', // Set the slug for the 'lesson_category' taxonomy 'with_front' => false, 'hierarchical' => true ), ); // Link this taxonomy to the 'lessons' custom post type register_taxonomy('lesson_category', array('lessons'), $args); } // Change the permalink structure for the lessons post type add_filter('post_type_link', 'custom_lessons_permalink_structure', 10, 4); function custom_lessons_permalink_structure($post_link, $post, $leavename, $sample) { if ('lessons' === $post->post_type && 'publish' === $post->post_status) { $terms = get_the_terms($post->ID, 'lesson_category'); if (!empty($terms)) { $term_slugs = array(); foreach ($terms as $term) { // Traverse through parent categories and add them to the array $parent_chain = get_ancestors($term->term_id, 'lesson_category'); $parent_chain = array_reverse($parent_chain); foreach ($parent_chain as $parent_id) { $parent_term = get_term($parent_id, 'lesson_category'); $term_slugs[] = $parent_term->slug; } $term_slugs[] = $term->slug; } $post_link = home_url('/') . implode('/', $term_slugs) . '/' . $post->post_name . '/'; } else { // No category selected, keep the URL simple $post_link = home_url('/') . $post->post_name . '/'; } } return $post_link; } // Add the %lesson_category% tag to the rewrite rules add_filter('rewrite_rules_array', 'custom_lessons_rewrite_rules'); function custom_lessons_rewrite_rules($rules) { $new_rules = array(); $terms = get_terms(array('taxonomy' => 'lesson_category', 'hide_empty' => false)); foreach ($terms as $term) { $term_path = $term->slug; $new_rules[$term_path . '/([^/]+)/?$'] = 'index.php?lesson_category=$matches[1]'; } // Add a rule for the case when no category is selected $new_rules['([^/]+)/?$'] = 'index.php?lessons=$matches[1]'; return $new_rules + $rules; }