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.
13 class FormTestLimitValidationErrorsForm extends FormBase {
18 public function getFormId() {
19 return 'form_test_limit_validation_errors_form';
25 public function buildForm(array $form, FormStateInterface $form_state) {
27 '#type' => 'textfield',
34 '#type' => 'textfield',
35 '#element_validate' => ['::elementValidateLimitValidationErrors'],
37 $form['test_numeric_index'] = [
40 $form['test_numeric_index'][0] = [
41 '#title' => 'Test (numeric index)',
42 '#type' => 'textfield',
43 '#element_validate' => ['::elementValidateLimitValidationErrors'],
46 $form['test_substring'] = [
49 $form['test_substring']['foo'] = [
50 '#title' => 'Test (substring) foo',
51 '#type' => 'textfield',
52 '#element_validate' => ['::elementValidateLimitValidationErrors'],
54 $form['test_substring']['foobar'] = [
55 '#title' => 'Test (substring) foobar',
56 '#type' => 'textfield',
57 '#element_validate' => ['::elementValidateLimitValidationErrors'],
60 $form['actions']['partial'] = [
62 '#limit_validation_errors' => [['test']],
63 '#submit' => ['::partialSubmitForm'],
64 '#value' => t('Partial validate'),
66 $form['actions']['partial_numeric_index'] = [
68 '#limit_validation_errors' => [['test_numeric_index', 0]],
69 '#submit' => ['::partialSubmitForm'],
70 '#value' => t('Partial validate (numeric index)'),
72 $form['actions']['substring'] = [
74 '#limit_validation_errors' => [['test_substring', 'foo']],
75 '#submit' => ['::partialSubmitForm'],
76 '#value' => t('Partial validate (substring)'),
78 $form['actions']['full'] = [
80 '#value' => t('Full validate'),
88 public function elementValidateLimitValidationErrors($element, FormStateInterface $form_state) {
89 if ($element['#value'] == 'invalid') {
90 $form_state->setError($element, t('@label element is invalid', ['@label' => $element['#title']]));
97 public function submitForm(array &$form, FormStateInterface $form_state) {
103 public function partialSubmitForm(array &$form, FormStateInterface $form_state) {
104 // The title has not been validated, thus its value - in case of the test case
105 // an empty string - may not be set.
106 if (!$form_state->hasValue('title') && $form_state->hasValue('test')) {
107 $this->messenger()->addStatus('Only validated values appear in the form values.');