function VerticalTabsDemo::buildForm

Build the form.

@inheritdoc

Overrides FormInterface::buildForm

File

modules/form_api_example/src/Form/VerticalTabsDemo.php, line 23

Class

VerticalTabsDemo

Implements the vertical tabs demo form controller.

Namespace

Code

public function buildForm(array $form, FormStateInterface $form_state) {
    $form['description'] = [
        '#type' => 'item',
        '#markup' => $this->t('This example demonstrates the use of vertical tabs to group elements.'),
    ];
    $form['information'] = [
        '#type' => 'vertical_tabs',
        '#default_tab' => 'edit-publication',
    ];
    $form['author'] = [
        '#type' => 'details',
        '#title' => 'Author',
        '#group' => 'information',
    ];
    $form['author']['name'] = [
        '#type' => 'textfield',
        '#title' => $this->t('Name'),
    ];
    $form['publication'] = [
        '#type' => 'details',
        '#title' => $this->t('Publication'),
        '#group' => 'information',
    ];
    $form['publication']['publisher'] = [
        '#type' => 'textfield',
        '#title' => $this->t('Publisher'),
    ];
    $form['actions'] = [
        '#type' => 'actions',
    ];
    // Add a submit button that handles the submission of the form.
    $form['actions']['submit'] = [
        '#type' => 'submit',
        '#value' => $this->t('Submit'),
    ];
    return $form;
}