<?php

class LoginController extends CI_Controller
{
    public function process()
    {
        $this->load->model("LoginModel");
        $this->load->model('AccountModel');
        //$this->load->library('javascript');
        $username = $this->input->post("username");
        $password = $this->input->post("password");

        if ($this->LoginModel->Login($username, $password))
        {
            $data["Cuentas"] = $this->AccountModel->getAllAccountInfo();
            $this->load->view('admin/index', $data);
        }
    }
}

<?php

class AccountModel extends CI_Model
{
    public function getAllAccountInfo()
    {
        $query = $this->db->query('SELECT cuenta, nombre, buscar, pago, monto, fecha, banco, interes, concepto, cuota, credito, debito FROM accounts');
        return $query->result_array();
    }

    public function saveData()
    {

    }
}

<?php
class LoginModel extends CI_Model
{
    public function Login($user, $pass)
    {
        $this->db->where('username', $user);
        $this->db->where('password', $pass);
        $query = $this->db->get('usuarios');
        if ($query->num_rows() == 1)
            return true;
        return false;
    }
}

<?php

class SaveController extends CI_Controller
{
    public function process()
    {

    }
}

<form class="well form-horizontal" action="<?php echo site_url('SaveController/process');?>" method="POST"  id="contact_form">