Hide wordpress page completely - php

Question

I develop my first plugin, which creates some pages programatically by this method:
$page_id = wp_insert_post(
array(
'comment_status' => 'close',
'ping_status' => 'close',
'post_author' => 1,
'post_title' => 'HSN Form',
'post_name' => strtolower(str_replace(' ', '-', trim('hsn-form'))),
'post_status' => 'publish',
'post_type' => 'page',
)
);
And I set template file for it:
add_filter( 'page_template', 'hsn_service_form_page_template', 10, 1 );
function hsn_service_form_page_template( $page_template ){
if ( is_page( 'hsn-form' ) ) {
$page_template = plugin_dir_path(__DIR__) . 'service-form/form-template.php';
}
return $page_template;
}
After I would like to hide it completely from wordpress dashboard, but those have to available following way:
wwww.example.com/hsn-form.
I can hide it following code from Pages menu:
add_filter( 'parse_query', 'ts_hide_pages_in_wp_admin' );
function ts_hide_pages_in_wp_admin($query) {
global $pagenow,$post_type;
$page = get_page_by_path('hsn-form');
if (is_admin() && $pagenow=='edit.php' && $post_type =='page') {
$query->query_vars['post__not_in'] = array($page->ID);
}
}
It's ok, but it's still available in Appereance->Menu, where you can create nav menus.
I searched for it, but I can't find complete solution for my problem:
My plugin has to create some pages which are available this way: www.example.com/hsn-form
I need to hide this pages completely from admin dashboard
I would like to apply templates for these pages to add some custom php code.
So If somebody should know a complete solution for it, that should be great.
Thank you in advance!

Answer 1

change parse_query to pre_get_posts

Answer 2

In order to remove a page from the admin nav menu, you can hook into the admin_menu action, then manipulate the global $submenu variable.
add_action('admin_menu', function(){
global $submenu;
array_walk($submenu, function(&$child, $parent){
if( $parent != 'edit.php' )
return;
foreach($child as $key=>$submenu){
if( $submenu[2] == 'post-new.php' ) {
unset($child[$key]);
break;
}
}
});
});
In that example, we are looking for a subpage with the slug of post-new.php
underneath the top level page with the slug edit.php. If found, it gets altogether removed from the navigation menu.
The $submenu[2] part is looking for the slug element in the array. If you want to match by the submenu name instead, you can replace it with $submenu[0].