codeigniter form validation not displaying errors - php

Question

I am using a wamp server on my local machine , to host my codeigniter project.
Everything seems to work well , but the form validation wont display the errors when one occur.
The callback to check if email already exist doesnt also work , which is really weird because it was working last night.
this is my controller -
<?php if (!defined('BASEPATH')) exit('No direct script access allowed');
class Signup extends MX_Controller
{
function __construct() {
parent::__construct();
//calling helpers and library classes from ci
$this->load->helper(array('form', 'url'));
$this->load->helper('date');
$this->load->library('form_validation');
}
public function index() {
// loading the registration form
$this->load->view('register');
// form validation
$this->form_validation->set_rules('username', 'Username', 'required|min_length[3]|max_length[12]|is_unique[gamers.username]');
$this->form_validation->set_rules('email','Email','trim|required|valid_email|callback_isEmailExist');
$this->form_validation->set_rules('country', 'Country', 'required');
$this->form_validation->set_rules('region', 'Region', 'required');
$this->form_validation->set_rules('dob', 'Birth Date', 'required');
$this->form_validation->set_rules('phone', 'Mobile Number', 'required');
$this->form_validation->set_rules('passphrase', 'Password', 'trim|required|sha1');
$this->form_validation->set_rules('referral', 'Referred By');
if ($this->form_validation->run() !== FALSE)
{
//loading model
$this->load->model('signup_model');
// preparing form data
$username = $this->input->post('username');
$email = $this->input->post('email');
$country = $this->input->post('country');
$region = $this->input->post('region');
$dob = $this->input->post('dob');
$phone = $this->input->post('phone');
$password = $this->input->post('passphrase');
$referred = $this->input->post('referral');
//check current time stamp
$join_date = date('Y-m-d H:i:s');
//email verification hush key-generator
$token = md5(rand(0,1000).'cashout233');
// packaging form data for transport in an array
$data = array(
'username' => $username,
'email' => $email,
'country' => $country,
'region' => $region,
'birthdate' => $dob,
'phone_number' => $phone,
'password' => $password,
'join_date' => $join_date,
'referral' => $referred,
'token' => $token
);
// finally transporting data to the model
$taxi = $this->signup_model->register_gamer($data);
if ($taxi !== false) {
// send email verification link after sucessfull transport
// $from = 'noreply#talenthut.com';
// $to = $email;
// $subject = 'Email Confirmation Instructions';
// $message = '
// '.$first_name.', Thanks for signing up!
// Please click this link to activate your account:
// localhost/index.php/email_verification?email='.$email.'&hash='.$hash.'
// '; // Our message above including the link
// $this->email->from($from);
// $this->email->to($email);
// $this->email->subject($subject);
// $this->email->message($message);
// $this->email->send();
// Redirect user to Email Confirmation Page
redirect('index.php/signup/EmailConfirmation/'.urlencode($email));
}
}
}
public function isEmailExist($str) {
$this->load->model('signup_model');
$is_exist = $this->signup_model->isEmailExist($str);
if ($is_exist) {
$this->form_validation->set_message(
'isEmailExist', 'Email address is already in use.'
);
return false;
} else {
return true;
}
}
public function EmailConfirmation($to)
{
echo "email has been sent to ".urldecode($to);
// loading the email confirmation page
// $this->load->view('e_confirmation');
}
}
My view that displays the registration form is -
<?php echo form_open('index.php/signup'); ?>
<!-- fieldsets -->
<fieldset>
<div class="errors"> <?php echo validation_errors(); ?> </div>
<label>
<input id="username" type="text" name="username" value="" placeholder="Username" />
</label>
<label>
<input id="email" type="email" name="email" value="" placeholder="Email" />
</label>
<label>
<select name="country"><br/>
<option value="Ghana">Ghana</option>
</select>
</label>
<label>
<select name="region"><br/>
<option value="">Choose Region...</option>
<option value="Greater Accra">Greater Accra</option>
<option value="Central">Central</option>
<option value="Western">Western</option>
<option value="Eastern">Eastern</option>
<option value="Ashanti">Ashanti</option>
<option value="Brong Ahaful">Brong Ahaful</option>
<option value="Northen">Northen</option>
<option value="Volta">Volta</option>
<option value="Upper East">Upper East</option>
<option value="Upper West">Upper West</option>
</select>
</label>
<label>
<input id="dob" type="text" name="dob" value="" placeholder="Birth Date" />
</label>
<label>
<input id="phone" type="text" name="phone" value="" placeholder="Mobile Number" />
</label>
<label>
<input id="password" type="password" name="passphrase" value="" placeholder="Password" />
</label>
<label>
<select name="referral"><br/>
<option value="">how did you know about us</option>
<option value="Search Engine">Search engine</option>
<option value="Twitter">Twitter</option>
<option value="Word of Mouth">Word of mouth</option>
<option value="Newspaper">Newspaper</option>
</select>
</label>
<label>
<span> </span>
<p class="help">By clicking the sign up button below, you confirm that you are 18 years , and you agree to our
Terms and Conditions and Privacy Policy.</p><br/><br/>
<span> </span>
<button class="submit" type="submit">Sigm Up</button>
</label>
</fieldset>
</form>
model function for the isEmailExist controller function is
function isEmailExist($email) {
$this->db->select('id');
$this->db->where('email', $email);
$query = $this->db->get('gamer');
if ($query->num_rows() > 0) {
return true;
} else {
return false;
}
}
Thanks in advance.

Answer 1

worked it out!!!
I realised the validations doesnt work with redirections but only views.
I also called the login form too early before the validation. I placed it in the if condition and everything worked like a charm .
As for the "callback " . I just had to eliminate all that nonsense and replaced it with is_unique.

Answer 2

You can check email exist or Not as simply applying codeigniter inbuild rule:
is_unique[table_name.table_coloum]
$this->form_validation->set_rules('email', 'Email', 'required|trim|xss_clean|is_unique[users.email]');