Fuel\Validation\ResultInterface::setValidated PHP Method

    public function setValidated($field);

 /**
  * Validates a single field
  *
  * @param string          $field
  * @param mixed[]         $data
  * @param ResultInterface $result
  *
  * @return bool
  *
  * @since 2.0
  */
 protected function validateField($field, $data, ResultInterface $result)
 {
     $value = null;
     // If there is data, and the data is not empty and not numeric. This allows for strings such as '0' to be passed
     // as valid values.
     $dataPresent = isset($data[$field]) && !(empty($data[$field]) && !is_numeric($data[$field]));
     if ($dataPresent) {
         $value = $data[$field];
     }
     $rules = $this->getFieldRules($field);
     foreach ($rules as $rule) {
         if (!$dataPresent && !$rule->canAlwaysRun()) {
             continue;
         }
         $validateResult = $rule->validate($value, $field, $data);
         if ($validateResult instanceof ResultInterface) {
             $result->merge($validateResult, $field . '.');
             return $validateResult->isValid();
         }
         if (!$validateResult) {
             // Don't allow any others to run if this one failed
             $result->setError($field, $this->buildMessage($this->getField($field), $rule, $value), $rule);
             return false;
         }
     }
     // All is good so make sure the field gets added as one of the validated fields
     $result->setValidated($field);
     return true;
 }