Admin.php (controller)

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

class Admin extends CI_Controller
{

    function __construct()
    {
        parent::__construct();
        $this->load->library('template');
    }

    public function index()
    {
        $this->load->view('admin/dashboard');
    }

    function get_where($table = null)
    {
        $this->db->from($table);
        $this->db->where($where);

        return $this->db->get();
    }
}