public function login()
    {
        if($this->ion_auth->logged_in()){
            redirect(base_url('user/profile'), 'refresh');
        }
        $username = $email = $this->input->post('email');
        $identity = $email;
        $password = $this->input->post('password');
        if ($this->ion_auth->login($identity, $password))
        {
            $user_details=$this->ion_auth->user()->row();
            $this->session->set_userdata('first_name',$user_details->first_name);
            $this->session->set_userdata('last_name',$user_details->last_name);
            $this->session->set_flashdata('message_success', $this->ion_auth->messages());
            if($this->ion_auth->is_admin())
            {
                redirect(base_url('admin/dashboard'), 'refresh');
            }
            else
            {
                redirect(base_url('user/profile'), 'refresh');
            }
        }
        else
        {
            $this->session->set_flashdata('message_error', $this->ion_auth->errors());
            redirect(base_url('page/signup'), 'refresh');
        }

    }