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06-24-2014, 08:36 AM

[eluser]Zombie1[/eluser]
Hello all,

I'm a newbie to CodeIgniter. I'm having some trouble with my form validation. My form allows a user to enter a username and password then checks it against a database. If the username or password do not match the program displays an error message. If the username and password do match then they are redirected to a page called my_blog.

Here's the code for the controller:

Code:
class Form extends CI_Controller {

 function index()

 {

  $this->load->helper(array('form', 'url'));

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

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

  $this->form_validation->set_rules('password', 'Password', 'required');

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

  {

   $this->load->view('log_in');

  }

  else

  {

   $this->load->view('my_blog');

  }

 }

 function user_not_exists($username) {

  $this->load->model('log_in_db');

     $user_check = $this->user_model->user_not_exists($username);

     if($user_check > 0) {

   redirect('my_blog');

   return TRUE;

     }

     else {

   $this->form_validation->set_message('required', 'Username does not match');

         return FALSE;

     }

 }

 function password_not_exists($password) {

     $check_password = $this->user_model->password_not_exists($password);

     if($check_password > 0) {

   redirect('my_blog');

   return TRUE;

     }

     else {

   $this->form_validation->set_message('required', 'Password does not match');

         return FALSE;

     }

 }

}

Here's the code for the model which the controller links to called log_in_db:

Code:
class log_in_db extends CI_Model {

 function user_not_exists($username) {

     $this->db->where('username', $username);

     $query = $this->db->get('users');

     return $query->num_rows();

 }

 function password_not_exists($password) {

     $this->db->where('password', $password);

     $query = $this->db->get('users');

     return $query->num_rows();

 }

}

And finally here's the code for the log in form which holds the actual form including both textfields for username and password:

Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

&lt;html &gt;

&lt;head&gt;

&lt;meta http-equiv="Content-Type" c charset=iso-8859-1" /&gt;

&lt;title&gt;Log in form&lt;/title&gt;

&lt;link rel="stylesheet" href="../../../_css/style-sheet.css" media="screen" /&gt;

&lt;/head&gt;

&lt;body&gt;

<div id="login-form"> 

 <div id="log-in-form">

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

   &lt;?php echo form_open('my_form'); ?&gt;

    <table>

     <tr>

      <td class="log-in-td" align="left">

       <label for="username" class="login-text">Username</label>      

      </td>

     </tr>

     <tr>

      <td class="log-in-td" align="left">

       &lt;input name="username" type="text" size="25" maxlength="25" id="username" class="my-textfields" /&gt;                                </td>

     </tr>

     <tr>

      <td class="log-in-td" align="left">

       <label for="password" class="login-text">Password</label>      

      </td>

     </tr>

     <tr>

      <td class="log-in-td" align="left">

       &lt;input name="password" type="password" size="25" maxlength="25" id="password" class="my-textfields" /&gt;                    </td>

     </tr>

     <tr>

      <td align="center" class="log-in-td">

        &lt;input type="button" id="My-Log-in-button" value="log-in"  /&gt;

      </td>          

     </tr>

      </table>

   &lt;?php echo form_close(); ?&gt;

  </div>

 </div>

&lt;/body&gt;

&lt;/html&gt;

If anyone can give me any help to why the error messages aren't displayed or the user isn't redirected when they enter a correct username and password.

06-24-2014, 09:01 AM

[eluser]CroNiX[/eluser]
Do you get the "this field is required" if you submit an empty form? According to your validation rules, that is all you are checking for:

Code:
$this->form_validation->set_rules('username', 'Username', 'required');

$this->form_validation->set_rules('password', 'Password', 'required');

You are also submitting the form to a "my_form" controller. Does this exist? It looks like the name of your controller is just "form"

Code:
&lt;?php echo form_open('my_form'); ?&gt;

I would also advise to never use "my_" for anything in your code, unless you are extending a native CI library. "my_" has a special meaning in CI and can get you in trouble unless you really understand it.