RegexFieldValidationRule.php in Field Validation 8
File
src/Plugin/FieldValidationRule/RegexFieldValidationRule.php
View source
<?php
namespace Drupal\field_validation\Plugin\FieldValidationRule;
use Drupal\Core\Form\FormStateInterface;
use Drupal\field_validation\ConfigurableFieldValidationRuleBase;
use Drupal\field_validation\FieldValidationRuleSetInterface;
class RegexFieldValidationRule extends ConfigurableFieldValidationRuleBase {
public function addFieldValidationRule(FieldValidationRuleSetInterface $field_validation_rule_set) {
return TRUE;
}
public function getSummary() {
$summary = parent::getSummary();
return $summary;
}
public function defaultConfiguration() {
return [
'setting' => NULL,
];
}
public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
$form['setting'] = array(
'#type' => 'textarea',
'#title' => $this
->t('Pattern'),
'#description' => $this
->t('Specify the Perl-compatible regular expression pattern to validate the user input against.'),
'#default_value' => $this->configuration['setting'],
'#required' => TRUE,
);
return $form;
}
public function submitConfigurationForm(array &$form, FormStateInterface $form_state) {
parent::submitConfigurationForm($form, $form_state);
$this->configuration['setting'] = $form_state
->getValue('setting');
}
public function validate($params) {
$value = isset($params['value']) ? $params['value'] : '';
$rule = isset($params['rule']) ? $params['rule'] : null;
$context = isset($params['context']) ? $params['context'] : null;
$settings = array();
if (!empty($rule) && !empty($rule->configuration)) {
$settings = $rule->configuration;
}
$pattern = isset($settings['setting']) ? $settings['setting'] : '';
if ($value != '' && !preg_match($pattern, $value)) {
$context
->addViolation($rule
->getErrorMessage());
}
}
}