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<?php
namespace Drupal\form_test\Form;
use Drupal\Core\Form\FormBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\StringTranslation\TranslatableMarkup;
use Symfony\Component\HttpFoundation\JsonResponse;
class FormTestSelectForm extends FormBase {
public function getFormId() {
return 'form_test_select';
}
public function buildForm(array $form, FormStateInterface $form_state) {
$base = [
'#type' => 'select',
'#options' => [
'one' => 'one',
'two' => 'two',
'three' => 'three',
'four' => '<strong>four</strong>',
],
];
$form['select'] = $base + [
'#title' => '#default_value one',
'#default_value' => 'one',
];
$form['select_required'] = $base + [
'#title' => '#default_value one, #required',
'#required' => TRUE,
'#default_value' => 'one',
];
$form['select_optional'] = $base + [
'#title' => '#default_value one, not #required',
'#required' => FALSE,
'#default_value' => 'one',
];
$form['empty_value'] = $base + [
'#title' => '#default_value one, #required, #empty_value 0',
'#required' => TRUE,
'#default_value' => 'one',
'#empty_value' => 0,
];
$form['empty_value_one'] = $base + [
'#title' => '#default_value = #empty_value, #required',
'#required' => TRUE,
'#default_value' => 'one',
'#empty_value' => 'one',
];
$form['no_default'] = $base + [
'#title' => 'No #default_value, #required',
'#required' => TRUE,
];
$form['no_default_optional'] = $base + [
'#title' => 'No #default_value, not #required',
'#required' => FALSE,
'#description' => 'Should result in "one" because it is not required and there is no #empty_value requested, so default browser behavior of preselecting first option is in effect.',
];
$form['no_default_optional_empty_value'] = $base + [
'#title' => 'No #default_value, not #required, #empty_value empty string',
'#empty_value' => '',
'#required' => FALSE,
'#description' => 'Should result in an empty string (due to #empty_value) because it is optional.',
];
$form['no_default_empty_option'] = $base + [
'#title' => 'No #default_value, #required, #empty_option',
'#required' => TRUE,
'#empty_option' => '- Choose -',
];
$form['no_default_empty_option_optional'] = $base + [
'#title' => 'No #default_value, not #required, #empty_option',
'#empty_option' => '- Dismiss -',
'#description' => 'Should result in an empty string (default of #empty_value) because it is optional.',
];
$form['no_default_empty_value'] = $base + [
'#title' => 'No #default_value, #required, #empty_value 0',
'#required' => TRUE,
'#empty_value' => 0,
'#description' => 'Should never result in 0.',
];
$form['no_default_empty_value_one'] = $base + [
'#title' => 'No #default_value, #required, #empty_value one',
'#required' => TRUE,
'#empty_value' => 'one',
'#description' => 'A mistakenly assigned #empty_value contained in #options should not be valid.',
];
$form['no_default_empty_value_optional'] = $base + [
'#title' => 'No #default_value, not #required, #empty_value 0',
'#required' => FALSE,
'#empty_value' => 0,
'#description' => 'Should result in 0 because it is optional.',
];
$form['multiple'] = $base + [
'#title' => '#multiple, #default_value two',
'#default_value' => [
'two',
],
'#multiple' => TRUE,
];
$form['multiple_no_default'] = $base + [
'#title' => '#multiple, no #default_value',
'#multiple' => TRUE,
];
$form['multiple_no_default_required'] = $base + [
'#title' => '#multiple, #required, no #default_value',
'#required' => TRUE,
'#multiple' => TRUE,
];
$form['opt_groups'] = [
'#type' => 'select',
'#options' => [
'optgroup_one' => [
'one' => 'one',
'two' => 'two',
'three' => 'three',
'four' => '<strong>four</strong>',
],
'optgroup_two' => [
'five' => 'five',
'six' => 'six',
],
],
];
$form['unsorted'] = [
'#type' => 'select',
'#options' => $this
->makeSortableOptions('uso'),
];
$sortable_options = $this
->makeSortableOptions('sso');
$sortable_options['sso_zzgroup']['#sort_options'] = TRUE;
$sortable_options['sso_xxgroup']['#sort_options'] = TRUE;
$sortable_options['sso_xxgroup']['#sort_start'] = 1;
$form['sorted'] = [
'#type' => 'select',
'#options' => $sortable_options,
'#sort_options' => TRUE,
];
$sortable_none_options = $this
->makeSortableOptions('sno');
$sortable_none_options['sno_zzgroup']['#sort_options'] = TRUE;
$form['sorted_none'] = [
'#type' => 'select',
'#options' => $sortable_none_options,
'#sort_options' => TRUE,
'#sort_start' => 4,
'#empty_value' => 'sno_empty',
];
$sortable_none_nostart_options = $this
->makeSortableOptions('snn');
$sortable_none_nostart_options['snn_zzgroup']['#sort_options'] = TRUE;
$form['sorted_none_nostart'] = [
'#type' => 'select',
'#options' => $sortable_none_nostart_options,
'#sort_options' => TRUE,
'#empty_value' => 'snn_empty',
];
$form['submit'] = [
'#type' => 'submit',
'#value' => 'Submit',
];
return $form;
}
protected function makeSortableOptions($prefix) {
return [
$prefix . '_first_element' => new TranslatableMarkup('first element'),
$prefix . '_second' => new TranslatableMarkup('second element'),
$prefix . '_zzgroup' => [
$prefix . '_gc' => new TranslatableMarkup('group c'),
$prefix . '_ga' => new TranslatableMarkup('group a'),
$prefix . '_gb' => 'group b',
],
$prefix . '_yygroup' => [
$prefix . '_ge' => new TranslatableMarkup('group e'),
$prefix . '_gd' => new TranslatableMarkup('group d'),
$prefix . '_gf' => new TranslatableMarkup('group f'),
],
$prefix . '_xxgroup' => [
$prefix . '_gz' => new TranslatableMarkup('group z'),
$prefix . '_gi' => new TranslatableMarkup('group i'),
$prefix . '_gh' => new TranslatableMarkup('group h'),
],
$prefix . '_d' => 'd',
$prefix . '_c' => new TranslatableMarkup('main c'),
$prefix . '_b' => new TranslatableMarkup('main b'),
$prefix . '_a' => 'a',
];
}
public function submitForm(array &$form, FormStateInterface $form_state) {
$form_state
->setResponse(new JsonResponse($form_state
->getValues()));
}
}