Drupal 8 - access field value in preprocess views view unformatted hook

Drupal 8 - access field value in preprocess views view unformatted hook:

/**

 * Implements hook_preprocess_views_view().

 */

function yourmodule_preprocess_views_view_unformatted(&$vars) {  

  if ($vars['view']->id() == 'solr_product_search') {

    $vars['base_url'] = \Drupal::request()->getSchemeAndHttpHost(); 

    

    if ($vars['view']->id() == 'solr_training_search') {

      $view = $vars['view'];

      $rows = $vars['rows'];

      

      foreach ($rows as $rowId => $row) {

        foreach ($view->field as $fieldId => $fieldValue) {

          if ($fieldId == 'field_coursedate') {

            $data = trim(strip_tags($view->style_plugin->getField($rowId, $fieldId)));

            $vars['field_course_date'] = $data;

          }

        }

      }

    }

  }

} HAPPY CODING...