function AjaxFormsTestSimpleForm::buildForm

Overrides FormInterface::buildForm

File

core/modules/system/tests/modules/ajax_forms_test/src/Form/AjaxFormsTestSimpleForm.php, line 26

Class

AjaxFormsTestSimpleForm

Form builder: Builds a form that triggers a simple AJAX callback.

Namespace

Code

public function buildForm(array $form, FormStateInterface $form_state) {
    $object = new Callbacks();
    $form = [];
    $form['select'] = [
        '#title' => $this->t('Color'),
        '#type' => 'select',
        '#options' => [
            'red' => 'red',
            'green' => 'green',
            'blue' => 'blue',
        ],
        '#ajax' => [
            'callback' => [
                $object,
                'selectCallback',
            ],
        ],
        '#suffix' => '<div id="ajax_selected_color">No color yet selected</div>',
    ];
    $form['checkbox'] = [
        '#type' => 'checkbox',
        '#title' => $this->t('Test checkbox'),
        '#ajax' => [
            'callback' => [
                $object,
                'checkboxCallback',
            ],
        ],
        '#suffix' => '<div id="ajax_checkbox_value">No action yet</div>',
    ];
    $form['submit'] = [
        '#type' => 'submit',
        '#value' => $this->t('submit'),
    ];
    // This is for testing invalid callbacks that should return a 500 error in
    // \Drupal\Core\Form\FormAjaxResponseBuilderInterface::buildResponse().
    $invalid_callbacks = [
        'null' => NULL,
        'empty' => '',
        'nonexistent' => 'some_function_that_does_not_exist',
    ];
    foreach ($invalid_callbacks as $key => $value) {
        $form['select_' . $key . '_callback'] = [
            '#type' => 'select',
            '#title' => $this->t('Test %key callbacks', [
                '%key' => $key,
            ]),
            '#options' => [
                'red' => 'red',
                'green' => 'green',
            ],
            '#ajax' => [
                'callback' => $value,
            ],
        ];
    }
    $form['test_group'] = [
        '#type' => 'details',
        '#title' => $this->t('Test group'),
        '#open' => TRUE,
    ];
    // Test ajax element in a #group.
    $form['checkbox_in_group_wrapper'] = [
        '#type' => 'container',
        '#attributes' => [
            'id' => 'checkbox-wrapper',
        ],
        '#group' => 'test_group',
        'checkbox_in_group' => [
            '#type' => 'checkbox',
            '#title' => $this->t('AJAX checkbox in a group'),
            '#ajax' => [
                'callback' => [
                    $object,
                    'checkboxGroupCallback',
                ],
                'wrapper' => 'checkbox-wrapper',
            ],
        ],
        'nested_group' => [
            '#type' => 'details',
            '#title' => $this->t('Nested group'),
            '#open' => TRUE,
        ],
        'checkbox_in_nested' => [
            '#type' => 'checkbox',
            '#group' => 'nested_group',
            '#title' => $this->t('AJAX checkbox in a nested group'),
            '#ajax' => [
                'callback' => [
                    $object,
                    'checkboxGroupCallback',
                ],
                'wrapper' => 'checkbox-wrapper',
            ],
        ],
    ];
    $form['another_checkbox_in_nested'] = [
        '#type' => 'checkbox',
        '#group' => 'nested_group',
        '#title' => $this->t('Another AJAX checkbox in a nested group'),
    ];
    return $form;
}