How to redirect to a edit node page with RedirectResponse?

Question

From a hook (not form_alter), I want redirect the user to a node edit page (like mywebsite/node/[nid]/edit) How can I do that with the RedirectResponse class?

After searches, I found the following code.

new RedirectResponse(\Drupal::url('route.name'));

How can I get/find the route.name for a node edit page?

Update :

According the cilefen's answer =) From my entity_insert hook :

function article_entity_insert(EntityInterface $entity) {
  if ($entity->bundle() == "article"){
    Url::fromRoute('entity.node.edit_form',['node', $entity->id()]); //But when I create a new node, the "view" page is loaded and not the edit page
    dpm($entity->id()); //show the node id
  }
}

Update 2 :

The command

dpm(Url::fromRoute('entity.node.edit_form',['node', $entity->id()]));

return

Drupal\Core\Url Object
(
    [urlGenerator:protected] => 
    [urlAssembler:protected] => 
    [accessManager:protected] => 
    [routeName:protected] => entity.node.edit_form
    [routeParameters:protected] => Array
        (
            [0] => node
            [1] => 31
        )

    [options:protected] => Array
        (
        )

    [external:protected] => 
    [unrouted:protected] => 
    [uri:protected] => 
    [internalPath:protected] => 
    [_serviceIds:protected] => Array
        (
        )

)

But the command

dpm(Url::fromRoute('entity.node.edit_form',['node', $entity->id()])->toString());

Return this error :

[Mon Feb 15 01:38:30.081002 2016] [:error] [pid 10219] [client 192.168.1.48:49246] Uncaught PHP Exception Drupal\Core\Entity\EntityStorageException: "Some mandatory parameters are missing ("node") to generate a URL for route "entity.node.edit_form"." at /var/www/system/core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorage.php line 757, referer: http://192.168.1.44/system/node/add/article

Answer 1

Note that \Drupal::url() is deprecated. You should use the static methods of the Url class to create URLs from routes.

To find the route names, use the Drupal console drupal router:debug. From that I found:

 entity.node.edit_form  /node/{node}/edit

I think what you need is Url::fromRoute('entity.node.edit_form', ['node' => 1]) where 1 is the node ID to be edited.

Answer 2

From your controller class, you can use the redirect() method like so :

return $this->redirect('entity.node.edit_form', ['node' => $node_id]);

For other ways of doing this, see drupal_goto() has been removed.

There's no need to fiddle with Urls or string conversion as discussed in the other answer.

Answer 3

You have:

Url::fromRoute('entity.node.edit_form', ['node', $entity->id()])->toString()
                                               ^^

I think you want:

Url::fromRoute('entity.node.edit_form', ['node' => $entity->id()])->toString();
                                               ^^^^

The first has an indexed array as the second parameter to Url::fromRoute(), the second has a named array as the second parameter.