Custom view field - Drupal

Here, We are going to define a custom field for the view to output our actions dropdown. 

1. Define routes for actions, we can take an example from drupal documentation.

2. Use @ViewsField annotation to define your field under Plugin\views\field.

   <?php
   
   namespace Drupal\drupaljournal\Plugin\views\field;
   
   use Drupal\Core\Url;
   use Drupal\views\Plugin\views\field\FieldPluginBase;
   use Drupal\views\ResultRow;
   
   /**
    * A handler to provide a field of actions for a user reporting.
    *
    * @ingroup views_field_handlers
    *
    * @ViewsField("user_reporting_actions_views_field")
    */
   class UserReportingActionsViewsField extends FieldPluginBase {
   
     /**
      * {@inheritdoc}
      */
     public function usesGroupBy() {
       return FALSE;
     }
   
     /**
      * {@inheritdoc}
      */
     public function query() {
       // Do nothing -- to override the parent query.
     }
   
     /**
      * {@inheritdoc}
      */
     protected function defineOptions() {
       $options = parent::defineOptions();
   
       $options['hide_alter_empty'] = ['default' => FALSE];
       return $options;
     }
   
     /**
      * {@inheritdoc}
      */
     public function render(ResultRow $values) {
       $entity = $this->getEntity($values);
   
       $operations['dismiss'] = [
         'title' => 'Dismiss report',
         'url' => Url::fromRoute('drupaljournal_user.dismiss_report', ['user' => $entity->id()]),
         'weight' => 0,
       ];
       $operations['delete_image'] = [
         'title' => 'Delete image',
         'url' => Url::fromRoute('drupaljournal_user.delete_image_report', ['user' => $entity->id()]),
         'weight' => 1,
       ];
       $operations['delete_bio'] = [
         'title' => 'Delete Bio',
         'url' => Url::fromRoute('drupaljournal_user.delete_bio_report', ['user' => $entity->id()]),
         'weight' => 2,
       ];
       $operations['delete_bio_image'] = [
         'title' => 'Delete Bio+Image',
         'url' => Url::fromRoute('drupaljournal_user.delete_bio_image_report', ['user' => $entity->id()]),
         'weight' => 3,
       ];
   
       $build = [
         '#type' => 'operations',
         '#links' => $operations,
       ];
   
       return $build;
     }
   
   }
   

3. Create mymodule.views.inc file under the module directory.

4. Use hook_views_data_alter to add your field.

   <?php
   
   /**
    * Implements hook_views_data_alter().
    */
   function drupaljournal_views_data_alter(array &$data) {
     $data['reporting']['table']['group'] = t('User');
     $data['reporting']['table']['join'] = [
       '#global' => [],
     ];
     $data['reporting']['user_reporting_actions_views_field'] = [
       'title' => t('Actions'),
       'field' => [
         'title' => t('Actions'),
         'help' => t('Custom actions for a user reporting.'),
         'id' => 'user_reporting_actions_views_field',
       ],
     ];
   }

Output