How to pass Controller method using ajax in codeIgniter - codeigniter

Question

public function index() {
if ($this->session->userdata('admin_login') == 1)
redirect(base_url() . 'index.php?admin/admin_dashboard', 'refresh');
if ($this->session->userdata('teacher_login') == 1)
redirect(base_url() . 'index.php?teacher/teacher_dashboard', 'refresh');
if ($this->session->userdata('student_login') == 1)
redirect(base_url() . 'index.php?student/student_dashboard', 'refresh');
if ($this->session->userdata('parent_login') == 1)
redirect(base_url() . 'index.php?parents/parents_dashboard', 'refresh');
$this->load->view('backend/login');
}
function ajax_login() {
$response = array();
$email = $_POST["email"];
$password = sha1($_POST["password"]);
$response['submitted_data'] = $_POST;
$login_status = $this->validate_login($email, $password);
$response['login_status'] = $login_status;
if ($login_status == 'success') {
$response['redirect_url'] = '';
}
echo json_encode($response);
}
I want to pass index() through $response['redirect_url'] = ''; how to pass? i already tried by creating routes but not working.

Answer 1

index() is a function, which according to your code either redirects the user or shows a page. Neither are good for an ajax response as the redirection or view will only occur or render in the ajax request not the users viewport.
I assume you want to add the logic in your index function without repeating yourself too much. Simple solution is to make a function for redirect.
Create a helper and put this function in it:
function group_redirect() {
$ci = &get_instance();
$ci->load->helper('url');
if ($ci->session->userdata('admin_login') == 1)
return base_url() . 'index.php?admin/admin_dashboard';
if ($ci->session->userdata('teacher_login') == 1)
return base_url() . 'index.php?teacher/teacher_dashboard';
if ($ci->session->userdata('student_login') == 1)
return base_url() . 'index.php?student/student_dashboard';
if ($ci->session->userdata('parent_login') == 1)
return base_url() . 'index.php?parents/parents_dashboard';
return false;
}
Then the rest is easy:
public function __construct() {
$this->load->helper('name_of_helper_with_function');
}
public function index() {
$redir = group_redirect();
if ($redir) {
redirect($redir);
}
$this->load->view('backend/login');
}
function ajax_login() {
$response = array();
$email = $_POST["email"];
$password = sha1($_POST["password"]);
$response['submitted_data'] = $_POST;
$login_status = $this->validate_login($email, $password);
$response['login_status'] = $login_status;
if ($login_status == 'success') {
$response['redirect_url'] = $redir;
}
echo json_encode($response);
}