redirect and come back of my navigator

[eluser]InsiteFX[/eluser]
For one your CI_Controller was all uppercase and you did not add the refresh for the redirect!

Code:

Class User extends CI_Controller{

    function index(){
        $this->load->model('login_model');
        $query = $this->login_model->login();
        if($query){
            $data = array(
                'email' => $this->input->post('email_login'),
                'is_logged_in' => true
            );
            $this->session->set_userdata($data);
            redirect('homepage', 'refresh');
        }else{
            redirect('loginpage', 'refresh');
        }
    }

}

Same thing here with your CI_Model you used all uppercase again!
And you are checking $query->num_rows wrong!

Code:

Class Login_model extends CI_Model{

    function login(){
        $this->db->where('email',$this->input->post('email_login'));
        $this->db->where('password',md5($this->input->post('password_login')));
        $query = $this->db->get('members');
        if($query->num_rows() == 1){
            return true;
        }else{
            return false;
        }
    }

}

Both Controller and Model should be save to disk with all lowercase names!

InsiteFX