function ViewEditForm::submitDisplayDuplicate
Submit handler to duplicate a display for a view.
File
- 
              core/
modules/ views_ui/ src/ ViewEditForm.php, line 887  
Class
- ViewEditForm
 - Form controller for the Views edit form.
 
Namespace
Drupal\views_uiCode
public function submitDisplayDuplicate($form, FormStateInterface $form_state) {
  $view = $this->entity;
  $display_id = $this->displayID;
  // Create the new display.
  $displays = $view->get('display');
  $display = $view->getExecutable()
    ->newDisplay($displays[$display_id]['display_plugin']);
  $new_display_id = $display->display['id'];
  $displays[$new_display_id] = $displays[$display_id];
  $displays[$new_display_id]['id'] = $new_display_id;
  $view->set('display', $displays);
  // By setting the current display the changed marker will appear on the new
  // display.
  $view->getExecutable()->current_display = $new_display_id;
  $view->cacheSet();
  // Redirect to the new display's edit page.
  $form_state->setRedirect('entity.view.edit_display_form', [
    'view' => $view->id(),
    'display_id' => $new_display_id,
  ]);
}
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