/**
* Specify data which should be serialized to JSON.
*
* @link http://php.net/manual/en/jsonserializable.jsonserialize.php
* @return mixed data which can be serialized by <b>json_encode</b>,
* which is a value of any type other than a resource.
*/
public function jsonSerialize()
{
$errors = $this->validation->getErrorsFlat();
if (count($errors) === 1) {
$message = Validation::errorMessage($errors[0]);
} else {
$message = t('Validation failed.');
}
$result = ['message' => $message, 'status' => $this->getCode(), 'errors' => $errors];
return $result;
}
/**
* Validate a required field.
*
* @param mixed &$value The field value.
* @param array $field The field definition.
* @param Validation $validation A {@link Validation} object to collect errors.
* @return bool|null Returns one of the following:
* - null: The field is not required.
* - true: The field is required and {@link $value} is not empty.
* - false: The field is required and {@link $value} is empty.
*/
protected function validateRequired(&$value, array $field, Validation $validation)
{
$required = val('required', $field, false);
$type = $field['type'];
if ($value === '' || $value === null) {
if (!$required) {
$value = null;
return true;
}
switch ($type) {
case 'boolean':
$value = false;
return true;
case 'string':
if (val('minLength', $field, 1) == 0) {
$value = '';
return true;
}
}
$validation->addError('missing_field', $field);
return false;
}
return null;
}
