How to insert drupal8 registration form inside your block?

Question

Drupal

My block consists of 3 tabs. One of them is registration. How to display the registration form there?
Thank you!

Answer 1

You can either get the login form from the formBuilder in your block's build() method, pass it to the template, and render where you want. See Drupal\user\Plugin\Block\UserLoginBlock for an example.
Or just render the 'user_login_block' inside your block like so:

$block_manager = \Drupal::service('plugin.manager.block');
$config = [];
$plugin_block = $block_manager->createInstance('system_breadcrumb_block', $config);
$access_result = $plugin_block->access(\Drupal::currentUser());
if (is_object($access_result) && $access_result->isForbidden() || is_bool($access_result) && !$access_result) {
  return [];
}
$render = $plugin_block->build();
return $render;

https://drupal.stackexchange.com/questions/171686/...
Better use DI instead of calling the \Drupal class