Drupal 8.x

I have a content type News, with the link field field_news_source. I want to copy Node title to field_news_source Link text. all I got is a custom_module.module file with:

/**
 * Implements hook_entity_presave().
 */
function custom_module_entity_presave(Drupal\Core\Entity\EntityInterface $entity) {
  switch ($entity->bundle()) {
    // Here you modify only your day content type
    case 'news':
//???
      
     break;
  }
}

I need some help, please

Need to migrate Rest services custom module, that processes POST requests, from drupal 7 to 8. The GET works by following instructions in https://www.drupal.org/docs/8/api/restful-web-services-api/custom-rest-r.... But can't get POST to work, route not found error.

The GET is working, but POST give path error.

drupal-8.8.4

---

<code>
/modules/custom/tax_tob/config/install/rest.resource.demo_resource.yml

I love Drupal and how it's data-driven. But, it is a CMS, which means programming already done. Why then is there such a mystery to redirect http to https? I dug and searched and it seems to be this thing that no one EXACTLY knows how to get to work. If it's that tough, why is either: No Module, or No clear directions in the documentation? I hate WordPress, but they actually do have a way to click and it's done. This is the norm in creating websites now—HTTPS. I'm not a developer, I barely like to insert code anywhere even though I can.