Drupal 8 - Valid Email address
\Drupal::service('email.validator')->isValid($mail);
Drupal 8 - Utility classes and functions
DRY (Don't repeat yourself) is a principle of software development, have you hear about that?
Drupal 8 Html::load()
/** @var string $html */
$html = <<<HTML
<a href="/" title="home">Home</a>
HTML;
/** @var DOMElement $element */
foreach (Drupal\Component\Utility\Html::load($html)->getElementsByTagName('a') as $element) {
$href = $element->getAttribute('href');
$title = $element->getAttribute('title');
echo "{$title} is redirecting to {$href}" . PHP_EOL;
}
Drupal 8: Re-run update N hook
UPDATE key_value SET value='i:8000;' WHERE collection = 'system.schema' AND name = 'module_name';
Or
\Drupal::keyValue('system.schema')->set('module_name', (int) 8000);
Even
drush ev "\Drupal::keyValue('system.schema')->set('module_name', (int) 8000)";
drush eval "drupal_set_installed_schema_version("module_name", 8000)"
Git set credential helper
git config credential.helper store
Drupal 8: Re-run cron while it is already running
# Execute `php-eval` drush's command to release cron's flag
drush php-eval "\Drupal::lock()->release('cron');"
Load all taxonomy vocabularies
\Drupal\taxonomy\Entity\Vocabulary::loadMultiple()
Load taxonomy tree based on vocabulary
\Drupal::entityTypeManager()->getStorage('taxonomy_term')->loadTree($vid);
Pantheon - Drupal 8 + Upstream Updates
# Official Pantheon documentation reference here: https://pantheon.io/docs/core-updates/#overwrite-core
git pull -Xtheirs git://github.com/pantheon-systems/drops-8.git master
Drupal 8 Load EntityViewDisplay instance
use Drupal\Core\Entity\Entity\EntityViewDisplay;
// Define values to load entity
$entity_type = 'node';
$bundle = 'article';
$view_mode = 'teaser';
// Setup entity view display ID
$entity_id = sprintf('%s.%s.%s', $entity_type, $bundle, $view_mode);
// Load entity view display object using entity id.
$entityViewDisplay = EntityViewDisplay::load($entity_id);