validation in codeigniter show fatal error undefined function validation_errors()

Question

I create a login controller and loaded all necessary library and helper when I try to validate my login form it shows fatal error undefined validation_errors()

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class LoginController extends CI_Controller{

public function index()
{
    $error['error']='';
    $this->load->library('form_validation');
    $this->load->helper(array('form','url'));

    $this->form_validation->set_rules('user','Username','required|trim');
    $this->form_validation->set_rules('password','Password','required|trim');

    if($this->form_validation->run())
    {
        echo 'success';
    }
    else
    {
        $error['error']='username required';
        return redirect('welcome/login','refresh',$error);
    }
}
}

this is my view

<div class="container">    

<?php echo validation_errors()?>
<div id="loginbox" class="mainbox col-md-6 col-md-offset-3 col-sm-6 col-sm-offset-3"> 

<div class="row">                
<div class="iconmelon">
  <svg viewBox="0 0 32 32">
    <g filter="">
      <use xlink:href="#git"></use>
    </g>
  </svg>
</div>
</div>

<div class="panel panel-default" >
<div class="panel-heading">
    <div class="panel-title text-center">Bootsnipp.com<?php echo $error;?> </div>
</div>

Try my answer .hope it will help you

JYoThI
– JYoThI

2017-08-21 12:14:34 +00:00
Commented Aug 21, 2017 at 12:14 — JYoThI
– JYoThI, Commented Aug 21, 2017 at 12:14

JYoThI · Accepted Answer · 2017-08-21 12:12:30Z

1

Method 1 : Load the library in autoload file in this path application\config\autoload.php

$autoload['libraries'] = array('form_validation');

Method 2 : Load the library in controller constructor function .

$this->load->library('form_validation');

1st : Instead of redirect you need to load the view

return redirect('welcome/login','refresh',$error);

To

$this->load->view('welcome/login');

edited Aug 21, 2017 at 12:12

answered Aug 21, 2017 at 12:03

JYoThI

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Comments

Tpojka · Accepted Answer · 2017-08-21 12:08:12Z

Check in docs how the flow should look like:

if ($this->form_validation->run() == FALSE)
{
    $this->load->view('myform');
}
else
{
    $this->load->view('formsuccess');
}

In this else block you can set redirection to success page. If form fails you have to load same (in your case welcome/login) view again.

So, your code would be like:

<?php defined('BASEPATH') or exit('Come over next time');

class Logincontroller extends CI_Controller
{
    public function __construct()
    {
        parent::__construct();
    }

    public function index()
    {
        $error['error']='';
        $this->load->library('form_validation');
        $this->load->helper(array('form','url'));

        $this->form_validation->set_rules('user','Username','required|trim');
        $this->form_validation->set_rules('password','Password','required|trim');

        if($this->form_validation->run() == false) {
            // you don't need to initialize error, CI will handle that
            $this->load->view('welcome/login');
        }
        else {
            echo 'success';
        }
    }

Rahul · Accepted Answer · 2017-08-21 11:52:16Z

0

You should autoload form_validation library.

This should be the path : application\config\autoload.php

Inside that $autoload['libraries'] = array();

And then add form_validation as one value inside this array.

Give it a try. It should work.

answered Aug 21, 2017 at 11:52

Rahul

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1 Comment

Rahul Over a year ago

I recommend you to debug run method of form_validation library. Check what's going on, where its stuck, then only you come to know the exact issue.

score 0 · Accepted Answer · 2017-08-21 12:41:45Z

Try This

First letter of class and file name should be the only one that is upper case. Also make sure you have set your base url in the config.php read the comment above the $config['base_url']

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class Logincontroller extends CI_Controller
{
    public function __construct() {
        parent::__construct();
        $this->load->library('form_validation');
        $this->load->helper(array('form','url'));
    }

    public function index()
    {
        $data['error'] = '';

        // You can add other data also.

        $this->form_validation->set_rules('user','Username','required|trim');
        $this->form_validation->set_rules('password','Password','required|trim');

        if($this->form_validation->run() == FALSE)
        {

            $this->load->view('login_view', $data);
        }
        else
        {
            // You can redirect to success controller
            redirect('welcome');
        }
    }

}

view

<?php echo validation_errors();?>

<?php echo form_open('logincontroller');?>
// Form Content
<?php echo form_close();?>

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