Controller

<?php
defined('BASEPATH') or exit('No direct script access allowed');

class Home extends CI_Controller
{
    public function __construct()
    {
        parent::__construct();
        $this->load->library('form_validation');
        $this->load->library('session');
    }
    public function index()
    {
        $data['user'] = $this->db->get_where('user', ['username' => $this->session->userdata('username')])->row_array();

        $this->load->view('templates/h_header', $data);
        $this->load->view('templates/h_banner', $data);
        $this->load->view('templates/h_navbar', $data);
        $this->load->view('home/index', $data);
        $this->load->view('templates/h_footer');
    }
    public function profile()
    {
        $data['title'] = 'Profile';
        $data['user'] = $this->db->get_where('user', ['username' => $this->session->userdata('username')])->row_array();

        $this->load->view('templates/h_header', $data);
        $this->load->view('templates/h_banner', $data);
        $this->load->view('templates/h_navbar', $data);
        $this->load->view('home/profile', $data);
        $this->load->view('templates/h_footer');
    }
    public function edit()
    {
        $data['title'] = 'Edit Profile';
        $data['user'] = $this->db->get_where('user', ['username' =>
        $this->session->userdata('username')])->row_array();

        $this->form_validation->set_rules('name', 'Full Name', 'required|trim');

        if ($this->form_validation->run() == false) {
            $this->load->view('templates/h_header', $data);
            $this->load->view('templates/h_banner', $data);
            $this->load->view('templates/h_navbar', $data);
            $this->load->view('home/edit-profile', $data);
            $this->load->view('templates/h_footer');
        } else {
            $username = $this->input->post('username');
            $nama = $this->input->post('nama');
            $email = $this->input->post('email');
            $telepon = $this->input->post('telepon');
            $alamat = $this->input->post('alamat');

            $upload_image = $_FILES['image']['name'];

            if ($upload_image) {
                $config['allowed_types']    = 'gif|jpg|png';
                $config['max_size']         = '2048';
                $config['upload_path']      = './assets/img/profile/';

                $this->load->library('upload', $config);

                if ($this->upload->do_upload('image')) {
                    $old_image = $data['user']['image'];
                    if ($old_image != 'default.jpg') {
                        unlink(FCPATH . 'assets/img/profile/' . $old_image);
                    }

                    $new_image = $this->upload->data('file_name');
                    $this->db->set('image', $new_image);
                } else {
                    echo $this->upload->display_errors();
                }
            }

            $this->db->set('nama', $nama, 'email', $email, 'telepon', $telepon, 'alamat', $alamat);
            $this->db->where('username', $username);
            $this->db->update('user');

            $this->session->set_flashdata('message', '<div class="alert alert-success" role="alert">Profil mu telah di update</div>');
            redirect('home/profile');
        }
    }
}