<?php
defined('BASEPATH') OR exit('No direct script access allowed');
 
class Employee extends CI_Controller {
 
    public function __construct() {
        parent::__construct();
        $this->load->model('Employee_model');
    }
 
    public function index() {
        $data['employees'] = $this->Employee_model->get_all_employees();
        $this->load->view('employee_list', $data);
    }
 
    public function add() {
        $this->load->view('employee_form'); // Use the same form for adding
    }
 
    public function save() {  //Handles both adding and updating
        if ($this->input->post()) {
            $empno = $this->input->post('EMPNO');
            if ($empno) { //Update
                $this->Employee_model->update_employee($this->input->post(), $empno);
            } else { //Add
                $this->Employee_model->add_employee($this->input->post());
            }
            redirect('employee');
        }
    }
 
    public function delete($empno) {
        $this->Employee_model->delete_employee($empno);
        redirect('employee');
    }
 
    public function edit($empno) {
        $data['employee'] = $this->Employee_model->get_employee($empno);
        $this->load->view('employee_form', $data);
    }
}

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application/
├── controllers/
│   └── Employee.php
├── models/
│   └── Employee_model.php
├── views/
│   ├── employee_list.php
│   ├── employee_form.php  (used for both adding and updating)
│   └── employee_delete.php