Login

10-07-2008, 03:36 PM

[eluser]tdktank59[/eluser]
So I've just started using Code Igniter recently and I figured I'd start with a simple login form with validation.

Yes I know there is backend pro and what not, but I'm teaching myself by doing.

So basicaly ive gotten everything from the user guide

authentication.php

Code:
&lt;?php

class Authentication extends Controller {

    function Authentication()

    {

        parent::Controller();

    }

    function index()

    {

        /*$this->session->set_userdata('login',FALSE);

        $data = array( 'login' => $this->session->userdata('login') );

        $this->load->view('authentication_message',$data);*/

        if ($this->session->userdata('login') == TRUE)

        {

            redirect('welcome','refresh');

        }

        else

        {

            $this->login();

        }

    }

    function login()

    {        

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

        $rules['username']    = "trim|required|min_length[5]|max_length[25]|callback_username_check";

        $rules['password']    = "trim|required|min_length[5]|max_length[25]|md5";

        $this->validation->set_rules($rules);

        $fields['username']    = 'Username';

        $fields['password']    = 'Password';

        $this->validation->set_fields($fields);

        $this->validation->set_error_delimiters('<div class="error">', '</div>');

        if ($this->validation->run() == FALSE)

        {

            $data = array ( 'param' =>     array(    'username'    =>    array(    'name'      => 'username',

                                                                        'id'        => 'username',

                                                                        'value'     => $this->validation->username,

                                                                        'maxlength' => '25',

                                                                        'size'      => '20'),

                                                  'password'    =>    array(    'name'         => 'password',

                                                                          'id'        => 'password',

                                                                          'value'        => $this->validation->password,

                                                                          'maxlength' => '25',

                                                                          'size'        => '20'),

                                                'submit'    =>    array(    'name'        => 'submit',

                                                                        'id'        => 'submit',

                                                                        'value'        => 'Submit') 

                                                ));

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

        }

        else

        {

            $this->load->view('formsuccess');

        }

    }

    function username_check($username) 

    {

        if ($username == 'username')

        {

            return TRUE;

        }

        else

        {

            $this->validation->set_message('username_check', 'Invalid username used');

            return FALSE;

        }

    }

}

login_form.php

Code:
&lt;html&gt;

&lt;head&gt;

&lt;title&gt;My Form&lt;/title&gt;

&lt;style type="text/css"&gt;

body {

    font-family: monospace;

    font-size: 12px;

}

ul {

    padding: 0px;

    margin: 0px;

    list-style: none;

}

ul li {

    padding: 2px;

}

#form {

    width: 300px;

    margin: auto auto auto auto;

    position: relative;

}

fieldset {

    border: 1px solid #CCCCCC;

}

legend {

    font-weight: bold;

    font-size: 16px;

}

form {

    margin: 0px;

    padding: 0px;

}

.login label {

    font-weight: bold;

}

.error {

    width: 300px;

    margin: auto auto auto auto;

    position: relative;

    background-color: #FFFED0;

    border: 1px dotted #FFA29B;

    padding: 5px;

    text-align: center;

    margin-bottom: 5px;

}

&lt;/style&gt;

&lt;/head&gt;

&lt;body&gt;

&lt;?php echo $this->validation->error_string; ?&gt;

<div id="form">

    <fieldset>

        <legend>Login</legend>

        &lt;?php echo form_open('authentication/login'); ?&gt;

        <ul class="login">

            <li><label for="username">Username:&lt;?php echo form_input($param['username']); ?&gt;</label></li>

            <li><label for="password">Password:&lt;?php echo form_password($param['password']); ?&gt;</label></li>

            <li>&lt;?php echo form_submit($param['submit']); ?&gt;</li>

        </ul>

        &lt;?php echo form_close(); ?&gt;

    </fieldset>

</div>

&lt;/body&gt;

&lt;/html&gt;

However for login I want to match the username with the password.
Using whats already included with code igniter how would I do this?

Note I would be using a database
Table: user
Fields: username, password

10-07-2008, 03:55 PM

[eluser]Sumon[/eluser]
change your username_check() function code as

Code:
function username_check($username)

{

    $this->load->model("member_model");

    $password = $this->validation->password;

    if ($this->member_model->MemberLogin($MemEmail, $password) == FALSE)

    {

        $this->validation->set_message('username_check', 'Invalid username used');

        return FALSE;

    }

    else

    {

        return TRUE;

    }

}

In addition use model to check username and password matching. Here is a sample one you may use
Model named application/models/member_model.php

Code:
function MemberLogin($username, $password)

{

    $query = $this->db->query("SELECT * FROM user WHERE username='$username' AND password='$password'");

    if ($query->num_rows() > 0)

        return TRUE;

    else

        return FALSE;

}

10-07-2008, 03:59 PM

[eluser]tdktank59[/eluser]
Looks good, Ill give it a test later on but the syntax checks out and should work.

Thanks for the helping hand