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I'm curious about how Drupal 8 handles nodes 404 requests. I think there might be a route of 404 and then an internal check - if node id doesn't exists, it simply calls 404 route path.

If this scenario is right, how can I achieve the same for custom entity?

I have a content entity type, but want a 404 redirection if someone access wrong entity id directly similar to any node page which doesn't exists.

  • There is only one 404 page. If a page is not found, then the configured 404 page (in the site information settings page) is shown. That's it. There is no difference between nodes or not. – Berdir Jun 23 '16 at 14:46
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Ah, seeing that this is a follow-up to How to check if entity id exists or valid?, I think I know what the problem is.

If you ensure upcasting through the route, then Drupal throws a not found exception automatically and shows the 404 page.

So, you need to define your route as /entityform/{your_entity_type_id} and in the controller, type hint the argument YourEntityTypeId $your_entity_type_id. Then Drupal automatically loads the object, gives it to you and returns a 404 page if not found.

  • what does this line mean 'type hint the argument YourEntityTypeId $your_entity_type_id;' ? Can you explain this more? – Sugandh Khanna Jun 24 '16 at 5:20
  • @SugandhKhanna Type hinting isn't a Drupal thing: php.net/manual/en/… – Clive Jun 24 '16 at 9:42

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