3 namespace Drupal\form_test\Form;
5 use Drupal\Core\Form\FormBase;
6 use Drupal\Core\Form\FormStateInterface;
9 * Builds a simple form with a button triggering partial validation.
11 class FormTestLimitValidationErrorsForm extends FormBase {
16 public function getFormId() {
17 return 'form_test_limit_validation_errors_form';
23 public function buildForm(array $form, FormStateInterface $form_state) {
25 '#type' => 'textfield',
32 '#type' => 'textfield',
33 '#element_validate' => ['::elementValidateLimitValidationErrors'],
35 $form['test_numeric_index'] = [
38 $form['test_numeric_index'][0] = [
39 '#title' => 'Test (numeric index)',
40 '#type' => 'textfield',
41 '#element_validate' => ['::elementValidateLimitValidationErrors'],
44 $form['test_substring'] = [
47 $form['test_substring']['foo'] = [
48 '#title' => 'Test (substring) foo',
49 '#type' => 'textfield',
50 '#element_validate' => ['::elementValidateLimitValidationErrors'],
52 $form['test_substring']['foobar'] = [
53 '#title' => 'Test (substring) foobar',
54 '#type' => 'textfield',
55 '#element_validate' => ['::elementValidateLimitValidationErrors'],
58 $form['actions']['partial'] = [
60 '#limit_validation_errors' => [['test']],
61 '#submit' => ['::partialSubmitForm'],
62 '#value' => t('Partial validate'),
64 $form['actions']['partial_numeric_index'] = [
66 '#limit_validation_errors' => [['test_numeric_index', 0]],
67 '#submit' => ['::partialSubmitForm'],
68 '#value' => t('Partial validate (numeric index)'),
70 $form['actions']['substring'] = [
72 '#limit_validation_errors' => [['test_substring', 'foo']],
73 '#submit' => ['::partialSubmitForm'],
74 '#value' => t('Partial validate (substring)'),
76 $form['actions']['full'] = [
78 '#value' => t('Full validate'),
86 public function elementValidateLimitValidationErrors($element, FormStateInterface $form_state) {
87 if ($element['#value'] == 'invalid') {
88 $form_state->setError($element, t('@label element is invalid', ['@label' => $element['#title']]));
95 public function submitForm(array &$form, FormStateInterface $form_state) {
101 public function partialSubmitForm(array &$form, FormStateInterface $form_state) {
102 // The title has not been validated, thus its value - in case of the test case
103 // an empty string - may not be set.
104 if (!$form_state->hasValue('title') && $form_state->hasValue('test')) {
105 drupal_set_message('Only validated values appear in the form values.');