user 的 controller 和 view

<?php

class User extends CI_Controller {

    public function __construct()

    {

            parent::__construct();

    }

    public function index()

    {

        // if posted with a username, validate login or generate error message

        if (isset($_POST['username'])) {

            $this->load->model('MUser', '', TRUE);

            $username = $this->input->post('username');

            $password = $this->input->post('password');

            if ($this->MUser->authenticate_user($username, $password, $uid, $is_admin) ) {

                $this->session->set_userdata('uid', $uid);

                $this->session->set_userdata('is_admin', $is_admin);

                redirect('', 'refresh');

            } else {

                $data['error_message'] = '<p>Incorrect Username and / or Password</p>';

            }

        }

        // if not posted (or a authentication error), simply load the form

        $this->load->helper('form');

        // display information for the view

        $data['title'] = "Classroom: User Login";

        $data['headline'] = "User Login";

        $data['include'] = 'user_login';

        $data['uid'] = $this->session->userdata('uid');

        $data['is_admin'] = $this->session->userdata('is_admin');

        $this->load->view('template', $data);

    }

    public function register()

    {

        // if posted with a username, validate login or generate error message

        if (isset($_POST['username'])) {

            $this->load->model('MUser', '', TRUE);

            $username = $this->input->post('username');

            $password = $this->input->post('password');

            $this->load->library('form_validation');

            $this->form_validation->set_rules('username', 'Username', 'trim|required|xss_clean');

            $this->form_validation->set_rules('password', 'Password', 'trim|required|matches[passconf]');

            $this->form_validation->set_rules('passconf', 'Password Confirmation', 'trim|required');

            $has_error = FALSE;

            $data['error_message'] = NULL;

            if ($this->MUser->username_exists($username)) {

                $has_error = TRUE;

                $data['error_message'] .= '<p>That Username is already taken. Please choose another.</p>';

            }

            if ($this->form_validation->run() == FALSE) {

                $has_error = TRUE;

                $data['error_message'] .= validation_errors();

            }

            if ( ! $has_error) {

                $this->MUser->add_user($username, $password, $uid, $is_admin);

                $this->session->set_userdata('uid', $uid);

                $this->session->set_userdata('is_admin', $is_admin);

                $data['success_message'] = '<p>Congratulations! Your registration was successful.</p>';

                $data['register_success'] = TRUE;

                $data['username'] = $username;

                $data['password'] = $password;

            }

        }

        // if not posted (or a authentication error), simply load the form

        $this->load->helper('form');

        // display information for the view

        $data['title'] = "Classroom: User Registration";

        $data['headline'] = "User Registration";

        $data['include'] = 'user_register';

        $data['uid'] = $this->session->userdata('uid');

        $data['is_admin'] = $this->session->userdata('is_admin');

        $this->load->view('template', $data);

    }

    public function logout()

    {

        $this->session->sess_destroy();

        redirect('', 'refresh');

    }

}

/* End of file user.php */

/* Location: ./application/controllers/user.php */

<?php

    echo form_open('user', array('id' => 'login_form'));

    // an array of the fields in the student table

    $field_array = array('username' => 'Username','password' => 'Password');

    foreach($field_array as $field => $label) {

        echo '<p>';

        echo form_label($label, $field);

        if (substr($label,0,8) == 'Password') {

            echo form_password(array('name' => $field, 'id' => $field ));

        } else {

            echo form_input(array('name' => $field, 'id' => $field, 'value' => set_value($field) ));

        }

        echo '</p>';

    }

    // not setting the value attribute omits the submit from the $_POST array

    echo form_submit('', 'Login');

    echo form_close();

/* End of file user_login.php */

/* Location: ./application/views/user_login.php */

<?php

    if (isset($register_success)) {

        echo '<p><label for="username">Username:</label>'.$username.'</p>';;

        echo '<p><label for="password">Password:</label>'.$password.'</p>';;

    } else {

        echo form_open('user/register', array('id' => 'registration_form'));

        // an array of the fields in the student table

        $field_array = array('username' => 'Username','password' => 'Password','passconf' => 'Password Confirmation');

        foreach($field_array as $field => $label) {

            echo '<p>';

            echo form_label($label, $field);

            if (substr($label,0,8) == 'Password') {

                echo form_password(array('name' => $field, 'id' => $field ));

            } else {

                echo form_input(array('name' => $field, 'id' => $field, 'value' => set_value($field) ));

            }

            echo '</p>';

        }

        // not setting the value attribute omits the submit from the $_POST array

        echo form_submit('', 'Register');

        echo form_close();

    }

/* End of file user_register.php */

/* Location: ./application/views/user_register.php */