Form validation not working

I trying many things to do form validation but it still not working and also documentation is not proper or correct,
can you please give a proper example with a code.
otherwise i thing i am wasting my times

We can't really help you if you don't explain what your problem is. What's not working? Can you post some of your code? I assure you it's working and you're probably using it incorrectly.

Codeigniter is simply one of the tools you need to learn to be a successful developer. Always add more tools to your coding arsenal!

Hi, i ran into this same issue.

To replicate it, use a fresh install of CI4,
Copy and paste the code example from the user guide

Code:

TypeError
Argument 2 passed to CodeIgniter\Validation\Validation::setRules() must be of the type array, null given, called in /var/www/htdocs/CODEIGNITER/ion.info/system/Controller.php on line 187 search →

Hi,

I think i cracked this, so the example was modified as per below and it works:

PHP Code:

<?php
namespace App\Controllers;

use CodeIgniter\Controller;
use Config\Services;

class Form extends Controller {

    public $validation;

    public function index()
    {
        helper(['form', 'url']);

        $this->validation = \Config\Services::validation();

        $this->validation->setRules([
            'username' => 'required'
        ]);

        if (!$this->validation->withRequest($this->request)->run())
        {
            echo view('Signup', [
                'validation' => $this->validation
            ]);
        } else
        {
            echo view('Success');
        }
    }
} 


helper('form');
$validator = new \CodeIgniter\Form\Validator();

I get a class not found error for Validator. I take it this is not the way to do it but the docs do it this way.

Simpler is always better

helper('form');
$validator = new \CodeIgniter\Form\Validator();

I get a class not found error for Validator. I take it this is not the way to do it but the docs do it this way.

Er, the docs don't do it your way... https://bcit-ci.github.io/CodeIgniter4/l...he-library

Code:

$validator = \Config\Services::validation();

helper('form');
$validator = new \CodeIgniter\Form\Validator();

I get a class not found error for Validator. I take it this is not the way to do it but the docs do it this way.

Er, the docs don't do it your way... https://bcit-ci.github.io/CodeIgniter4/l...he-library

Code:

$validator = \Config\Services::validation();

The tutorial does it differently. https://bcit-ci.github.io/CodeIgniter4/t...items.html

Simpler is always better