Drupal 8.php

# ======= composer ============

# install
composer create-project drupal/recommended-project:^8 project_name

# install module
composer require drupal/module_name

# update drupal
composer update
php vendor/bin/drush updatedb


# ======== console ============

# install module
composer require drupal/console

# site dev mode
vender/drupal/console/bin/drupal site:mode dev

# site prod mode
vender/drupal/console/bin/drupal site:mode prod


# ======= drush ===============
composer require drush/drush
php vendor/bin/drush scr somefile.php


# ====== log ==================
\Drupal::logger('my_module')->notice($message);
\Drupal::logger('content_entity_example')->notice('@type: deleted %title.',
        array(
            '@type' => $this->entity->bundle(),
            '%title' => $this->entity->label(),
        ));


# ======== users ==============

# create user
\Drupal\user\Entity\User::create([
              'mail' => $user[0],
              'name' => $user[1],
          ])->save();

# current user
$user = \Drupal::currentUser();

# get user by id
$user = User::load($user_id);

# all useres with role
$admin_user_ids = \Drupal::entityQuery('user')
                        ->condition('roles', 'Administrator', 'CONTAINS')
                        ->execute();
# load by properties
$users = \Drupal::entityTypeManager()->getStorage('user')->loadByProperties(['field_region'=>$tids]);

# check permission
$user->hasPermission('some_permission')

# check role
$user->hasRole('some_role')

# check if user
if($user instanceof \Drupal\user\UserInterface)

# att
 ->id();
 ->getUsername();
 ->getRoles();
 ->getEmail();
 
$user = user_load_by_name('some user');
$uid = $user->id();

$user = user_load_by_mail('[email protected]');
$uid = $user->id();



# ======== nodes ==============

# load nodes by id
$node = \Drupal\node\Entity\Node::load($nid);

# load nodes by parametrs
$checklists = \Drupal::entityTypeManager()->getStorage('node')
            ->loadByProperties(['type' => 'node_type_name', 'status' => 1, 'field_name' => 0, ]);

$checklist->field_papka = ['target_id' => 1275]; // set taxonomy
$checklist->field_task->value = $value;
$checklist->field_task_files->appendItem($file); // append object
$checklist->field_papka = []; // empty term value


# att
   ->id();
   ->getTitle();
   ->getOwnerId(); - node author id
   ->changed->value; - update time
   ->field_name->getValue(); - get field value
   ->field_name->getString();
   
   
            
# ======== paragparh ==========

#load by id 
$p = \Drupal\paragraphs\Entity\Paragraph::load( $id );

#load by parametrs
$ps = \Drupal::entityTypeManager()->getStorage('paragraph')
                ->loadByProperties(['field_name' => $value]);

# create
$paragraph = Paragraph::create([
              'type' => 'name',
              'field_name' => [
                  'value' => $value
              ]
          ]);
$paragraph->save();

# att
->getParentEntity();

# edit field
$paragraph->field_task_files->value = $value;
$paragraph->field_task_files->appendItem($file);
$paragraph->save();

                
# ======== term ==========      

# create Term
$term = \Drupal\taxonomy\Entity\Term::create([
  'name' => 'name',
  'vid' => 'region',
  'parent' => ['target_id' => $parent_id]
])->save();

# if term
if($term instanceof \Drupal\taxonomy\TermInterface)

# get tree
$tree = \Drupal::entityTypeManager()->getStorage('taxonomy_term')
          ->loadTree('name_of_voc', 0, 1, true);

->id();
->getName();
          
# ======= file ============

$file = \Drupal\file\Entity\File::load($fid);

$file = \Drupal::entityTypeManager()->getStorage('file')->load($files[0]['target_id']);

$file = \Drupal::entityTypeManager()->getStorage('file')->loadByProperties(['filename' => $file_name]);


$file->get('fid')->value;        
$file->getFilename()
$file->get('uri')->value;

# ======= url ==============
use Drupal\Core\Url;

$url = Url::fromUri('internal:/node', $options);
$url = Url::fromUri('http://www.thecarneyeffect.co.uk/');
$url = Url::fromRoute('entity.node.canonical', ['node' => 1]);

# ======== link =============
use Drupal\Core\Url;

$options = array(
  'query'      => ['type' => 'article', 'status' => 1],
  'fragment'   => 'article-list',
  'attributes' => ['class' => ['btn', 'btn-mini']],
  'absolute'   => TRUE,
);
$link = Link::fromTextAndUrl('title', Url::fromUri('internal:/node', $options))->toString();


# ==== theming =========
# in /web/themes/focus/focus.theme

function theme_preprocess_field(&$variables, $hook) {
  $element = $variables['element'];
  if (isset($element['#field_name'])) {
    if ($element['#field_name'] == 'field_galereya_foto') {
     $variables['attributes']['class'][] = 'image-gallery-1';
    }
  }
}