Drupal 8: delete all nodes of the same type

Question

I have a need to remove all nodes of the same type in Drupal 8 (there are over 7k of nodes).

It wouldn\'t be a problem for Drupal 7 (DB query + node_del

Answer 1

you can use the Devel module
1- go to Admin->configuration->development->Generate content
( admin/config/development/generate/content )
2- select the content type you wish to delete its nodes.
3- check "delete all content in these content types.." (important)
4- put "0" in "how many nodes would you like to generate" (important)
see attached image for instructions.

attached image

Answer 2

One should use entity queries instead of acting directly on the database:

  $result = \Drupal::entityQuery('node')
      ->condition('type', 'my_content_type_name')
      ->execute();
  entity_delete_multiple('node', $result);

Setting up ranges like in the other answer shouldn't be too difficult.

See EntityFieldQuery has been rewritten for more information.

Answer 3

Well, the answer lies on the surface:

$types = array('my_content_type_name');

$nids_query = db_select('node', 'n')
->fields('n', array('nid'))
->condition('n.type', $types, 'IN')
->range(0, 500)
->execute();

$nids = $nids_query->fetchCol();

entity_delete_multiple('node', $nids);

I advice you to use "range" and some sort of "batch" (or just re-run the code multiple times), because it's a very fat operation (500 nodes per operation is ok for 256MB).

To execute this code you can either write custom module OR use the devel module: https://www.drupal.org/project/devel

After installation go to yoursite_address/devel/php and execute php code there.