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<?php
namespace Drupal\ajax_forms_test\Form;
use Drupal\Core\Form\FormBase;
use Drupal\ajax_forms_test\Callbacks;
use Drupal\Core\Form\FormStateInterface;
class AjaxFormsTestSimpleForm extends FormBase {
public function getFormId() {
return 'ajax_forms_test_simple_form';
}
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'),
];
$invalid_callbacks = [
'null' => NULL,
'empty' => '',
'nonexistent' => 'some_function_that_does_not_exist',
];
foreach ($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,
];
$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 $form;
}
public function submitForm(array &$form, FormStateInterface $form_state) {
}
}