Codeigniter 4 - Validation messages are not displayed correctly - codeigniter

Question

I decided to put the validations and messages inside the HunterModel.php model. My createHunter() method inside the HunterController.php file should insert a record.
The following snippet shows the problem i'm having: Apparently $this->$data->listError();, doesn't reveal the message (or messages) i defined in $validationMessages.
HunterModel.php
// Validation
protected $validationRules = [
'name_hunter' => 'required|max_length[30]',
'age_hunter' => 'required|integer',
'height_hunter' => 'required|decimal',
'weight_hunter' => 'required|decimal',
'type_hunter' => 'required|max_length[30]',
'type_nen' => 'required|max_length[30]',
'type_blood' => 'required|max_length[3]'
];
protected $validationMessages = [
'name_hunter' => [
'required' => 'Hunter name cannot be empty.',
'max_length' => 'The hunter name must have a maximum of 30 characters.'
],
'age_hunter' => [
'required' => 'Hunter age cannot be empty.',
'integer' => 'The hunter's age must be an integer.'
],
'height_hunter' => [
'required' => 'Hunter height cannot be empty.',
'decimal' => 'The hunter height must be a decimal number.'
],
'weight_hunter' => [
'required' => 'Hunter weight cannot be empty.',
'decimal' => 'The hunter weight must be a decimal number.'
],
'type_hunter' => [
'required' => 'It is necessary to define the type of hunter.',
'max_length' => 'The hunter type must be a maximum of 30 characters.'
],
'type_nen' => [
'required' => 'It is necessary to define the nen of the hunter.',
'max_length' => 'The hunter's nen must have a maximum of 30 characters.'
],
'type_blood' => [
'required' => 'It is necessary to define the hunter's blood type.',
'max_length' => 'The hunter's blood type must be a maximum of 3 characters.'
]
];
HunterController.php
public function createHunter()
{
try {
$hunter = new HunterModel();
$data = [
'name_hunter' => $this->request->getPost('name_hunter'),
'age_hunter' => $this->request->getPost('age_hunter'),
'height_hunter' => $this->request->getPost('height_hunter'),
'weight_hunter' => $this->request->getPost('weight_hunter'),
'type_hunter' => $this->request->getPost('type_hunter'),
'type_nen' => $this->request->getPost('type_nen'),
'type_blood' => $this->request->getPost('type_blood')
];
if ($hunter->insert($data)){
return $this->response->redirect(site_url('/read_hunters'));
} else {
$this->$data->listError();
}
} catch (\Exception $e) {
exit($e->getMessage());
}
}

Answer 1

Create Validations.php in Libraries folder if it's does not exist.
Validations.php must be like:
<?php
namespace App\Libraries;
class Validations
{
public $hunter = [
'rules' => [
'name_hunter' => 'required|max_length[30]',
//other rules...
],
'error' => [
'name_hunter' => [
'required' => 'Hunter name cannot be empty.',
'max_length' => 'The hunter name must have a maximum of 30 characters.'
],
//other error messages....
]
];
}
HunterController.php must be like:
<?php
namespace App\Controllers;
use App\Libraries\Validations;
class HunterController extends BaseController
{
public function __construct()
{
$this->validator = new Validations();
}
public function createHunter()
{
$response = [];
$val = $this->validate(
$this->validator->hunter['rules'],
$this->validator->hunter['error']
);
if (!$val) {
$response = [
'success' => false,
'msg' => addslashes((preg_replace('/\s+/', ' ', $this->validation->listErrors())))
];
}else {
try {
$hunter = new HunterModel();
$data = [
'name_hunter' => $this->request->getPost('name_hunter'),
'age_hunter' => $this->request->getPost('age_hunter'),
'height_hunter' => $this->request->getPost('height_hunter'),
'weight_hunter' => $this->request->getPost('weight_hunter'),
'type_hunter' => $this->request->getPost('type_hunter'),
'type_nen' => $this->request->getPost('type_nen'),
'type_blood' => $this->request->getPost('type_blood')
];
if ($hunter->insert($data)){
return redirect()->to(site_url('/read_hunters'));
} else {
$response = [
'success' => false,
'msg' => //your custom error message
];
}
} catch (\Exception $e) {
exit($e->getMessage());
}
//if you are using ajax
return $this->response->setJSON($response);
}
}