Custom validation in codeigniter 3 - php

Question

One thing I don't like about codeigniter is the validation logic being inside the controller, easily increasing and messing the code. In order to separate this logic the controller, I've created a model that imports the form_validation library:
Class BS_Validator extends CI_Model
{
protected $rules = array();
protected $fields = array();
# Get keys of fields.
public function getStructure()
{
return array_keys( $this->fields );
}
# Validate $_POST against the rules and fields.
public function validate()
{
$this->load->library('form_validation');
foreach( $this->rules as $key => $rule )
{
$this->form_validation->set_rules( $key, $this->fields[$key], $rule );
}
return $this->form_validation->run( $this );
}
}
For each validation I extend this class:
class User_Create extends BS_Validator
{
protected $fields = array(
'name' => 'Nome',
'email' => 'Email',
'password' => 'Senha',
'password_repeat' => 'Repetir senha'
);
protected $rules = array(
'name' => 'required|min_length[3]|max_length[50]',
'email' => 'required|min_length[8]|max_length[100]|valid_email|is_unique[users.email]',
'password' => 'required',
'password_repeat' => 'required|callback_password_repeat_check'
);
public function password_repeat_check ($password_repeat)
{
return true;
}
}
Everything works like a charm, except for the custom validation method, that is never called. In this specific case, it always returns (pasword_repeat_check) error.
What should I do to this method be recognized?

Answer 1

Couldn't manage to make it work this way.
The alterative I've used was to create a file MY_form_validation.php on libraries folder in order to extend the Form_validation class.
class BS_Form_validation extends CI_Form_validation
{
protected $CI;
function __construct($rules = array())
{
parent::__construct($rules);
}
public function password_repeat ($password_repeat)
{
return $_POST['password'] == $password_repeat;
}
}
With that I can create rules instead of callback rules, and it can be called as the following (without the need of the callback_ prefix):
protected $rules = array(
'name' => 'required|min_length[3]|max_length[50]',
'email' => 'required|min_length[8]|max_length[100]|valid_email|is_unique[users.email]',
'password' => 'required',
'password_repeat' => 'required|password_repeat'
);