suresh-kumara-gist

use Drupal\views\Views;

$display_plugins = Views::pluginManager('display')->getDefinitions();
$plugin_ids = [];
  foreach ($display_plugins as $id => $definition) {
   // if ($definition['provider'] == 'views' ||     $definition['provider']  == 'views_data_export') {
    if ($definition['provider'] == 'views') {
       $plugin_ids[] = $id;
    }
  }

suresh-kumara-gist

Follow this 2 links
https://github.com/squizlabs/PHP_CodeSniffer 
http://www.kianmeng.org/2015/05/is-your-drupal-code-adheres-to-coding.html  

suresh-kumara-gist

    $config = \Drupal::config('system.theme');    
    $theme_settings = \Drupal::config($config->get('default') . '.settings')->get();
    $variables['logo_path'] = file_create_url($theme_settings['logo']['path']);
    dpm( $variables['logo_path']);

suresh-kumara-gist

use Drupal\Component\Datetime\DateTimePlus;

$format = "D";
// create current datetime.
$current_date = new DateTimePlus();
// Format $current_date to dispaly, what ever php datetime format you needed. here I am formatting to 'D'
$current_day = $current_date->format($format, ['timezone' => drupal_get_user_timezone()]);

suresh-kumara-gist

use Drupal\Component\Datetime\DateTimePlus;

$format = "D";
$current_date = new DateTimePlus();
$current_timezone = date_default_timezone_get();
date_default_timezone_set("UTC");
$current_day = $current_date->format($format, ['timezone' => drupal_get_user_timezone()]);

$lastweek = 'last Sunday -1 week';
$dateformat = 'Y-m-d\TH:i:s';

suresh-kumara-gist

    $query = \Drupal::entityQueryAggregate('group_content')
      ->condition('type', 'section-group_node-session', '=')
      ->condition('entity_id.entity.field_session_from_time1', $startdaydate, '>=')
      ->condition('entity_id.entity.field_session_to_time1',$endaydate, '<=')
      ->groupBy('gid');
      // result we will get group by field values not group_content entity ids
    $result = $query->execute();
    
    dpm($result);
    

suresh-kumara-gist

drush sql-dump --structure-tables-list=cache,cache_* > dumpfile.sql   

suresh-kumara-gist

jQuery(".course-rating-statics-toggle").hover(function() {
  jQuery(this).children('.course-rating-statics').toggle();
});

suresh-kumara-gist

use Drupal\Core\Url;
use Drupal\Core\Render\Markup;

      $options = [
      	'attributes' => [
      	  'class' => [
      	    'use-ajax',
      	  ],
	  	  'data-dialog-type' => "modal",
	      'data-dialog-options' => [

suresh-kumara-gist

  // get all Course Ratings.
  function getCourseRatings($groupId) {
  	// Query to get all ratings for  the course.
	$query = \Drupal::database()->select('attendance__field_course', 'afc');
	$query->join("votingapi_result", "vr", "vr.entity_id = afc.entity_id");
	$query->fields('vr', ['value']);
	$query->condition('vr.function', 'vote_sum');
 	$query->condition('afc.field_course_target_id', $groupId);
	$courseRatings = $query->execute()->fetchAll(\PDO::FETCH_ASSOC);
	return $courseRatings;