Modal Form

A toolset for quick start of using forms in modal windows, flavored by access checks.

Usage

The element to open a form in a modal window.

  $form['actions']['view_filter_save'] = [
    '#type' => 'modal_form_link',
    '#class' => ViewFilterSelectForm::class,
    '#title' => $this->t('Save filter'),
    '#access' => $this->currentUser->isAuthenticated(),
    '#printed' => !$this->isFiltersApplied(),
    '#attributes' => [
      'class' => ['save-filter'],
      'data-query-parameters' => Json::encode([
        'name' => $view_name,
        'display' => $this->view->current_display,
      ]),
      'data-dialog-options' => Json::encode([
        'dialogClass' => 'modal--views-save',
        'width' => '500px',
      ]),
    ],
  ];

The ViewFilterSelectForm is a standard form implementation (any class that implements the \Drupal\Core\Form\FormInterface).

The additional requirement is to implement the \Drupal\modal_form\Form\ModalFormAccessInterface to define the access checks.