public static FormElement::validatePattern(&$element, FormStateInterface $form_state, &$complete_form)
#element_validate callback for #pattern form element property.
Parameters
$element: An associative array containing the properties and children of the generic form element.
$form_state: The current state of the form.
array $complete_form: The complete form structure.
File
- core/lib/Drupal/Core/Render/Element/FormElement.php, line 128
Class
- FormElement
- Provides a base class for form element plugins.
Namespace
Drupal\Core\Render\Element
Code
public static function validatePattern(&$element, FormStateInterface $form_state, &$complete_form) {
if ($element['#value'] !== '') {
// The pattern must match the entire string and should have the same
// behavior as the RegExp object in ECMA 262.
// - Use bracket-style delimiters to avoid introducing a special delimiter
// character like '/' that would have to be escaped.
// - Put in brackets so that the pattern can't interfere with what's
// prepended and appended.
$pattern = '{^(?:' . $element['#pattern'] . ')$}';
if (!preg_match($pattern, $element['#value'])) {
$form_state->setError($element, t('%name field is not in the right format.', array('%name' => $element['#title'])));
}
}
}
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