function FormValidator::performRequiredValidation
Same name in other branches
- 9 core/lib/Drupal/Core/Form/FormValidator.php \Drupal\Core\Form\FormValidator::performRequiredValidation()
- 10 core/lib/Drupal/Core/Form/FormValidator.php \Drupal\Core\Form\FormValidator::performRequiredValidation()
- 11.x core/lib/Drupal/Core/Form/FormValidator.php \Drupal\Core\Form\FormValidator::performRequiredValidation()
Performs validation of elements that are not subject to limited validation.
Parameters
array $elements: An associative array containing the structure of the form.
\Drupal\Core\Form\FormStateInterface $form_state: The current state of the form. The current user-submitted data is stored in $form_state->getValues(), though form validation functions are passed an explicit copy of the values for the sake of simplicity. Validation handlers can also $form_state to pass information on to submit handlers. For example: $form_state->set('data_for_submission', $data); This technique is useful when validation requires file parsing, web service requests, or other expensive requests that should not be repeated in the submission step.
1 call to FormValidator::performRequiredValidation()
- FormValidator::doValidateForm in core/
lib/ Drupal/ Core/ Form/ FormValidator.php - Performs validation on form elements.
File
-
core/
lib/ Drupal/ Core/ Form/ FormValidator.php, line 329
Class
- FormValidator
- Provides validation of form submissions.
Namespace
Drupal\Core\FormCode
protected function performRequiredValidation(&$elements, FormStateInterface &$form_state) {
// Verify that the value is not longer than #maxlength.
if (isset($elements['#maxlength']) && mb_strlen($elements['#value']) > $elements['#maxlength']) {
$form_state->setError($elements, $this->t('@name cannot be longer than %max characters but is currently %length characters long.', [
'@name' => empty($elements['#title']) ? $elements['#parents'][0] : $elements['#title'],
'%max' => $elements['#maxlength'],
'%length' => mb_strlen($elements['#value']),
]));
}
if (isset($elements['#options']) && isset($elements['#value'])) {
if ($elements['#type'] == 'select') {
$options = OptGroup::flattenOptions($elements['#options']);
}
else {
$options = $elements['#options'];
}
if (is_array($elements['#value'])) {
$value = in_array($elements['#type'], [
'checkboxes',
'tableselect',
]) ? array_keys($elements['#value']) : $elements['#value'];
foreach ($value as $v) {
if (!isset($options[$v])) {
$form_state->setError($elements, $this->t('An illegal choice has been detected. Please contact the site administrator.'));
$this->logger
->error('Illegal choice %choice in %name element.', [
'%choice' => $v,
'%name' => empty($elements['#title']) ? $elements['#parents'][0] : $elements['#title'],
]);
}
}
}
elseif ($elements['#type'] == 'select' && !$elements['#multiple'] && $elements['#required'] && !isset($elements['#default_value']) && $elements['#value'] === $elements['#empty_value']) {
$elements['#value'] = NULL;
$form_state->setValueForElement($elements, NULL);
}
elseif (!isset($options[$elements['#value']])) {
$form_state->setError($elements, $this->t('An illegal choice has been detected. Please contact the site administrator.'));
$this->logger
->error('Illegal choice %choice in %name element.', [
'%choice' => $elements['#value'],
'%name' => empty($elements['#title']) ? $elements['#parents'][0] : $elements['#title'],
]);
}
}
}
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