SO - Question/396141

<?php

// Custom Post Type
//==========================================================================================
// Community Posts =============================================================================
//==========================================================================================
function cws_register_community_post() {
  $labels = array(
      'name'               => _x( 'Community Posts', 'post type general name', 'cws' ),
      'singular_name'      => _x( 'Community Post', 'post type singular name', 'cws' ),
      'add_new'            => _x( 'Add New', 'community_post', 'cws' ),
      'add_new_item'       => __( 'Add New Community Post', 'cws' ),
      'edit_item'          => __( 'Edit Community Post', 'cws' ),
      'new_item'           => __( 'New Community Post', 'cws' ),
      'all_items'          => __( 'Community Posts', 'cws' ),
      'view_item'          => __( 'View Community Post', 'cws' ),
      'search_items'       => __( 'Search Community Posts', 'cws' ),
      'not_found'          => __( 'No Community Posts found', 'cws' ),
      'not_found_in_trash' => __( 'No Community Posts found in the trash', 'cws' ),
      'parent_item_colon'  => '',
      'menu_name'          => 'Community Posts'
  );
  $args   = array(
      'labels'          => $labels,
      'description'     => __( 'All Community Posts.', 'cws' ),
      'public'          => true,
      'menu_position'   => 25,
	  // here
	  'show_in_menu'    => true,
      //'show_in_menu'     => 'community-menu',
      // 'hierarchical'    => true,
      'supports'        => array( 'title', 'editor', 'thumbnail', 'page-attributes' ),
      'has_archive'     => false,
		// here
	  'taxonomies' 		=> array( 'community-menu' ),
      'rewrite'         => array(
			'slug' => 'community/%community_post_domain%',
			// here
			'with_front' => true
	  ),
      'capability_type' => 'community_post',
      'capabilities'    => array(
          'read_post'   => 'read_community_posts',
          'edit_post'   => 'edit_community_posts',
          'delete_post' => 'delete_community_posts',
      ),
  );
  register_post_type( 'community_post', $args );
}
add_action( 'init', 'cws_register_community_post' );



// Taxonomies
//==========================================================================================
// Community Post Type & Domain =============================================================
//==========================================================================================

function create_community_post_taxonomies() {
    $domainArgs = array(
        'show_ui'            => true,
        'hierarchical'       => true,
        'show_in_menu'       => 'community-menu',
        'show_admin_column'  => true,

        'labels' => array(
            'name'          => _x( 'Community Post Domains', 'taxonomy general name', 'cws' ),
            'singular_name' => _x( 'Community Post Domain', 'taxonomy singular name', 'cws' ),
            'add_new_item'  => __( 'Add New Community Post Domain', 'cws' ),
            'new_item_name' => __( 'New Community Post Domain', 'cws' ),
        ),

	    // here: Remove capabilities
        //'capabilities' => array(
        //  'manage_terms' => 'edit_community_posts',
        //  'edit_terms'   => 'edit_community_posts',
        //  'delete_terms' => 'edit_community_posts',
        //  'assign_terms' => 'edit_community_posts',
        //),
    );

    $typeArgs = array(
        'show_ui'            => true,
        'hierarchical'       => true,
        'show_in_menu'       => 'community-menu',
        'show_admin_column'  => true,

        'labels'  => array(
            'name'          => _x( 'Community Post Types', 'taxonomy general name', 'cws' ),
            'singular_name' => _x( 'Community Post Type', 'taxonomy singular name', 'cws' ),
            'add_new_item'  => __( 'Add New Community Post Type', 'cws' ),
            'new_item_name' => __( 'New Community Post Type', 'cws' ),
        ),

 	    // here: Remove capabilities
        //'capabilities' => array(
        //  'manage_terms' => 'edit_community_posts',
        //  'edit_terms'   => 'edit_community_posts',
        //  'delete_terms' => 'edit_community_posts',
        //  'assign_terms' => 'edit_community_posts',
        //),

        'rewrite' => array(
			'slug' 			=> 'community',
			// here
			'with_front' 	=> true,
			'hierarchical' 	=> false,
		),

    );
    register_taxonomy( 'community_post_type', 'community_post', $typeArgs );
    register_taxonomy( 'community_post_domain', 'community_post', $domainArgs );
}
add_action( 'init', 'create_community_post_taxonomies' );




/**
 * here
 * Fix permalinks structure with post_type_link
 */

add_filter('post_type_link', 'so_update_permalink_structure', 10, 2);
function so_update_permalink_structure( $post_link, $post )
{
    if ( false !== strpos( $post_link, '%community_post_domain%' ) ) {
        $taxonomy_terms = get_the_terms( $post->ID, 'community_post_domain' );
        foreach ( $taxonomy_terms as $term ) {
            if ( ! $term->parent ) {
                $post_link = str_replace( '%community_post_domain%', $term->slug, $post_link );
            }
        }
    }
    return $post_link;
}