How to get old validation errors

Hello!

I know that is possible to use the function old() to get items from a redirect()->withInput().

My doubt is: How to get old validation errors? Has a function for that?

PHP Code:

public function withInput()
    {
        $session = $this->ensureSession();

        $input = [
            'get'  => $_GET ?? [],
            'post' => $_POST ?? [],
        ];

        $session->setFlashdata('_ci_old_input', $input);

        // If the validator has any errors, transmit those back
        // so they can be displayed when the validation is
        // handled within a method different than displaying the form.
        $validator = Services::validation();
        if (! empty($validator->getErrors()))
        {
            $session->setFlashdata('_ci_validation_errors', serialize($validator->getErrors()));
        }

        return $this;
    } 


Thank you very much!

You should pass the error messages during the redirect, using "with($name, $content)", e.g.: https://codeigniter4.github.io/userguide...l#redirect

You should pass the error messages during the redirect, using "with($name, $content)", e.g.: https://codeigniter4.github.io/userguide...l#redirect

Ok. Thank you! But why they are saved as flash data?

PHP Code:

$validator = Services::validation();
if (! empty($validator->getErrors()))
{
    $session->setFlashdata('_ci_validation_errors', serialize($validator->getErrors()));
} 


Ok. I found it:

system/Validation/Validation.php:643

PHP Code:

public function getErrors(): array
{
    // If we already have errors, we'll use those.
    // If we don't, check the session to see if any were
    // passed along from a redirect_with_input request.
    if (empty($this->errors) && ! is_cli())
    {
        if (isset($_SESSION, $_SESSION['_ci_validation_errors']))
        {
            $this->errors = unserialize($_SESSION['_ci_validation_errors']);
        }
    }

    return $this->errors ?? [];
} 


It only works if session is active. Should not auto start the session here?

Thank you!