Edit records CodeIgniter - mysql

Question

I'm developing a basic crud application using PHP Codeigniter 3 with MySQL database.
I have done add and list method successfully but now I want to edit the record and have included an edit button in the records table in view. when I click on the button it will go to my edit record view but it shows some errors. I checked everything but I fail to resolve it.
This is my controller
<?php
class User extends CI_controller
{
public function index()
{
$this->load->model('User_model');
$users = $this->User_model->getUsers();
// print_r($users);
$data = array();
$data['users'] = $users;
$this->load->view('users/list',$data);
}
public function create()
{
//load model here
$this->load->model('User_model');
//load library
$this->load->library('form_validation');
$this->load->library('ckeditor');
$this->load->library('ckfinder');
//set rules
$this->form_validation->set_rules('name', 'Name', 'required');
$this->form_validation->set_rules('projectname', 'Projectname', 'required');
$this->form_validation->set_rules('projecttype', 'Projecttype', 'required');
$this->form_validation->set_rules('phone', 'Phone', 'required');
$this->form_validation->set_rules('email', 'Email', 'required|valid_email');
$this->form_validation->set_rules('address', 'Address', 'required');
$this->form_validation->set_rules('projectdescription', 'Projectdescription', 'required');
// $this->form_validation->set_rules('termname', 'Termname', 'required');
// $this->form_validation->set_rules('termdescription', 'Termdescription', 'required');
$this->form_validation->set_rules('article_description', 'Article_description', 'required');
if ($this->form_validation->run() == true) {
// print_r($_POST);
// Array ( [name] => muhammad zawish [projectname] => test [projecttype] => Hardware [phone] => 03206270391 [email] => muhammadzawish#gmail.com [address] => Gondal Road, Sialkot, Punjab, Pakistan [projectdescription] => aaaaaaaaaa [termname] => aaaaaa [termdescription] => aaaaaaaa )
$name = $this->input->post('name');
$projectname = $this->input->post('projectname');
$projecttype = $this->input->post('projecttype');
$phone = $this->input->post('phone');
$email = $this->input->post('email');
$address = $this->input->post('address');
$projectdescription = $this->input->post('projectdescription');
// $termname = $this->input->post('termname');
// $termdescription = $this->input->post('termdescription');
$article_description = $this->input->post('article_description');
// $formData = array('name' => $name, 'projectname' => $projectname, 'projecttype' => $projecttype, 'phone' => $phone, 'email' => $email, 'address' => $address, 'projectdescription' => $projectdescription, 'termname' => $termname, 'termdescription' => $termdescription,);
$formData = array('name' => $name, 'projectname' => $projectname, 'projecttype' => $projecttype, 'phone' => $phone, 'email' => $email, 'address' => $address, 'projectdescription' => $projectdescription, 'article_description' => $article_description);
//ck editor files
$this->ckeditor->basePath = base_url() . 'asset/ckeditor/';
$this->ckeditor->config['toolbar'] = array(
array('Source', '-', 'Bold', 'Italic', 'Underline', '-', 'Cut', 'Copy', 'Paste', 'PasteText', 'PasteFromWord', '-', 'Undo', 'Redo', '-', 'NumberedList', 'BulletedList')
);
$this->ckeditor->config['language'] = 'it';
$this->ckeditor->config['width'] = '730px';
$this->ckeditor->config['height'] = '300px';
//Add Ckfinder to Ckeditor
$this->ckfinder->SetupCKEditor($this->ckeditor, '../../asset/ckfinder/');
$this->User_model->add_user($formData);
$this->session->set_flashdata('message', 'Record has been added successfully');
redirect(base_url('user/index'));
} else {
$this->load->view('users/create');
}
}
function edit($id){
$this->load->model('User_model');
$row = $this->User_model->getUser($id);
$data1 = array();
$data1['row'] = $row;
$this->load->view('users/edit', $data1);
}
}
this is my model
<?php
class User_model extends CI_Model{
public function add_user($formArray){
// $this->load->library('session');
$this->db->insert('users', $formArray);
}
//for view data fetch from database
public function getUsers(){
$users = $this->db->get('users')->result_array();
return $users;
}
//for edit record
function getUser($id){
$this->db->where('id', $id);
$row = $this->db->get('users')->row_array();
return $row;
}
}
?>
when I access my edit.php view
404 Page Not Found
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