Login using username or email in codeigniter - codeigniter

Question

I am unable to login with email address. login is done through username only, when i try to login with email it redirect me to login page.
Please help me, so i can login with email also.
I checked many online sources but not helpful for me.
My Controllers:
STORE_ACCOUNTS_CONTROLLER
function get_with_double_condition($col1, $value1, $col2, $value2)
{
$this->load->model('mdl_store_accounts');
$query = $this->mdl_store_accounts->get_with_double_condition($col1, $value1, $col2, $value2);
return $query;
}
YOURACCOUNTS_CONTROLLER
function submit_login()
{
$this->load->module('site_security');
$this->load->module('store_accounts');
$submit = $this->input->post('submit',TRUE);
if ($submit=="Submit") {
//process the form
$this->load->library('form_validation');
$this->form_validation->set_rules('username','Username','required|min_length[5]|max_length[60]|callback_username_check');
$this->form_validation->set_rules('pword','Password','required|min_length[7]|max_length[35]');
if ($this->form_validation->run()==TRUE) {
//figure out user_id
$col1 = 'username';
$value1 = $this->input->post('username', TRUE);
$col2 = 'email';
$value2 = $this->input->post('email', TRUE);
$query = $this->store_accounts->get_with_double_condition($col1, $value1, $col2, $value2);
foreach ($query->result() as $row) {
$user_id = $row->id;
}
//send them to the private page
$this->_in_you_go($user_id, $login_type);
$remember = $this->input->post('remember', TRUE);
if ($remember=="remember-me") {
$login_type = "longterm";
}
else
{
$login_type = "shortterm";
}
}
else
{
echo validation_errors();
}
}
}
function username_check($str)
{
$this->load->module('site_security');
$this->load->module('store_accounts');
$error_msg = "You did not enter a correct username and/or password.";
$col1 = 'username';
$value1 = $str;
$col2 = 'email';
$value2 = $str;
$query = $this->store_accounts->get_with_double_condition($col1, $value1, $col2, $value2);
$num_rows = $query->num_rows();
if ($num_rows<1) {
$this->form_validation->set_message('username_check', $error_msg);
return FALSE;
}
foreach ($query->result() as $row) {
$pword_on_table = $row->pword;
}
$pword = $this->input->post('pword', TRUE);
$result = $this->site_security->_verify_hash($pword, $pword_on_table);
if ($result==TRUE) {
return TRUE;
}
else
{
$this->form_validation->set_message('username_check', $error_msg);
return FALSE;
}
}
My Model:
STORE_ACCOUNTS_MODEL
function get_with_double_condition($col1, $value1, $col2, $value2)
{
$table = $this->get_table();
$this->db->where($col1, $value1);
$this->db->or_where($col2, $value2);
$query=$this->db->get($table);
return $query;
}
My View:
LOGIN_PAGE
<div class="container">
<div class="row">
<div class="col-md-4 col-md-offset-4">
<form class="form-signin" action="<?= $form_location ?>" method="post">
<h2 class="form-signin-heading">Please sign in</h2>
<label for="inputText" class="sr-only">Username or Email address</label>
<input type="text" name="username" value="<?= $username?>" id="inputEmail" class="form-control" placeholder="Username or Email address" required autofocus>
<label for="inputPassword" class="sr-only">Password</label>
<input type="password" name="pword" id="inputPassword" class="form-control" placeholder="Password" required>
<div class="checkbox">
<label>
<input type="checkbox" name="remember" value="remember-me"> Remember me
</label>
</div>
<button name="submit" value="Submit" class="btn btn-lg btn-primary btn-block" type="submit">Sign in</button>
</form>
</div>
</div>
</div> <!-- /container -->

Answer 1

Your form is only POST username.
In case of email this don't validate in code
$this->form_validation->set_rules('username','Username','required|min_length[5]|max_length[60]|callback_username_check');
and $value2 will be empty
$value2 = $this->input->post('email', TRUE);

Answer 2

I didnt read the whole code ill provide you with a simple code that will be effective :
View File:
<form action='controller.php' method='POST'>
<input type='email' name='email'>
<input type='password' name='pass'>
<input type='submit' value='login' name='login'>
</form>
Controller.php
(define the model in constructor first in order to execute the statement $this->login_model->login();)
if(isset($_POST['login'])){
$condition=$this->login_model->login();
if(!empty($condition) && isset($condition)){
redirect('');//redirect to where ever you want or you can set the session as well
}}
login_model.php
public function login(){
$email=$_POST['email'];
$password=$_POST['pass'];
$this->db->select('*');
$this->db->from('table_name');
$this->db->where('email',$email);
$this->db->where('pass',$password);
$q= $this->db->get()-results();
return $q;
}