toko/application/controllers/admin/Product.php

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

class Product extends CI_Controller {
	private	$_tpl_path;
	
	public function __construct()
    {
        parent::__construct();
		$this->_tpl_path = 'admin/' . config_item('admin_template') . '/';
        $this->load->model("m_product");
        $this->load->library('form_validation');
    }
	
	public function index()
	{
		
		$product = $this->m_product;
		
		$data = array(
			'tpl_path' => $this->_tpl_path,
			'products' => $product->getAll()
		);
		$this->load->view($this->_tpl_path . 'product/list',$data);
	}
	
	public function add()
    {
		$product = $this->m_product;
        $validation = $this->form_validation;
        $validation->set_rules($product->rules());

        if ($validation->run()) {
            $product->save();
            $this->session->set_flashdata('success', 'Berhasil disimpan');
        }

		$data = array(
			'tpl_path' => $this->_tpl_path,
			'content_title' => 'Tambah Produk'
		);
		$this->load->view($this->_tpl_path . 'product/edit',$data);
    }

    public function edit($id = null)
    {
        if (!isset($id)) redirect('admin/product');
       
        $product = $this->m_product;
        $validation = $this->form_validation;
        $validation->set_rules($product->rules());

        if ($validation->run()) {
            $product->update();
            $this->session->set_flashdata('success', 'Berhasil disimpan');
        }

        $data["product"] = $product->getById($id);
        if (!$data["product"]) show_404();
        
        $this->load->view("admin/product/edit_form", $data);
    }

    public function delete($id=null)
    {
        if (!isset($id)) show_404();
        
        if ($this->product_model->delete($id)) {
            redirect(site_url('admin/product'));
        }
    }
}