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If you want to add if condition in my "global custom text" field in views Drupal 8

Example 1: Check node status and put conditional link according to publish status

{% if  status  %}
   put your HTML as condition
{% endif %}

Example 2: In this example we are checking a field value is empty or not. according to value in we are showing link or status

{% if  field_final_layout_date is empty %}

put your HTML as condition

{% else…
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$language = \Drupal::languageManager()->getCurrentLanguage()->getId();
$user = \Drupal\user\Entity\User::create();

// Mandatory.
$user->setPassword('password');
$user->enforceIsNew();
$user->setEmail('email');
$user->setUsername('user_name');

// Optional.
$user->set('init', 'email');
$user->set('langcode', $language);
$user->set('preferred_langcode', $language);
$user->set('preferred_admin_langcode', $language);
$user->set('setting_name', 'setting_value');
$user->addRole('rid');
$user->…
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Code to query for getting node according to field condition in DRUPAL 8

$query = \Drupal::entityQuery('node')
  ->condition('status', NODE_PUBLISHED)
  ->condition('type', 'custom_type');
$and = $query->andConditionGroup();
$and->condition('custom_taxonomy', 2);
$query->condition($and);
$and = $query->andConditionGroup();
$and->condition('custom_taxonomy', 8);
$query->condition($and);
$result = $query->execute();

Method to redirect on node id url

$url = Url::fromRoute('entity.node.canonical', ['node' => $nid]);
$form_state->setRedirectUrl($url);

Method to redirect on custom url

$url = Url::fromRoute('olsys.mycustom_dashboard');
$form_state->setRedirectUrl($url);

Redirect on user view page of loggedin user

use Drupal\Core\Controller\ControllerBase; // Use this on top
return $this->redirect('user.page');	// use this as your code 

$url = \Drupal\…
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Set current date in custom form element in DRUPAL8

Add this line at top

 use Drupal\Core\Datetime\DrupalDateTime; 

Add the following code to your form

function HOOK_form_alter(…
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If you have already created a webform then you can follow thi step
1. Open this url /admin/structure/webform (Structure -> Webform)
2. Click on "Build" in OPERATIONS column

3. Click on "+Add element" button, there will be seen a list form element

4. You can select Captcha from available list.

global $user;
$nid = 4; //nid is the node id of your webform.

$node = node_load($nid); 

The values to save. Take case about array indexes! (see below)

$data = array(
    '1' => array('0' => $type),
    '2' => array('0' => $method),
    '5' => array('0' => $volume),
    '6' => array('0' => $comment),
    '7' => array('0' => $phone),
    '8' => array('0' => $length)
);

$submission = (object) array(
    'nid' => $nid,
    'uid…
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Get user role of current loggedin user

$user_roles = \Drupal::currentUser()->getRoles();

Get user detail of curent loggedin user

$user = \Drupal\user\Entity\User::load(\Drupal::currentUser()->id());
user_delete(uid);

$user_roles = \Drupal::currentUser()->getRoles();
$user = \Drupal\user\Entity\User::load(\Drupal::currentUser()->id());
$uid = $user->get('uid')->value;	

In your theme's template.php file, you could add something like **/

/**
 * Implements hook_preprocess_html
 */
function THEME_NAME_preprocess_html(&$vars) {

  if (current_path() == 'my/custom/path') {
    $description = array(        
      '#type' => 'html_tag',
      '#tag' => 'meta',
      '#attributes' => array(
        'name' => 'description',
        'content' => 'here all description goes',
      )
    );
    drupal_add_html_head($description, 'description');
  }

}

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