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07-31-2007, 05:44 PM

[eluser]the real rlee[/eluser]
Hi guys, I would like to add a new error function which i can call anywhere in my CI app much like show_error(). I've read some posts about extending the Exceptions library, but it seems show_error() is a wrapper for the Exceptions show_error() function so I'm assuming the only way to create a custom error function which i can call just like show_error() is to ad it directly the Common.php file (?)

08-01-2007, 02:35 AM

[eluser]Glen Swinfield[/eluser]
If it doesn't use any of the existing error functionality you could just put it in a helper. Perhaps make error_helper.php, any functions in that file will be available globally once it's loaded into your controller - or auto-loaded.

08-01-2007, 04:51 PM

[eluser]the real rlee[/eluser]
Ahh thanks! I was overlooking the obvious there!

08-01-2007, 06:04 PM

[eluser]the real rlee[/eluser]
For anyone referring to this thread here's how i created my custom error:

Extended Exceptions Library (My_Exceptions) (CI uses this to create its own global show_error(), show_404() functions)

Code:
class MY_Exceptions extends CI_Exceptions {

    function MY_Exceptions(){

        parent::CI_Exceptions();

    }

    function show_401()

    {    

        $heading = "401 Not Authorized";

        $message = "You are not authorized to view this page.";

        echo $this->show_error($heading, $message, 'error_401');

        exit;

    }

}

Created a helper (helpers/error_helper.php) for my custom function which i autoload (CI does this within CodeIgniter/Common)

Code:
function show_401(){

    $exceptions =& load_class('Exceptions');

    $exceptions->show_401(); 

}

Created by own errors page (applications/errors/error_401.php)

Code:
&lt;?php header("HTTP/1.1 401 Unauthorized"); ?&gt;

&lt;html&gt;

&lt;head&gt;

&lt;title&gt;401 Unauthorized&lt;/title&gt;

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

body {

background-color:    #fff;

margin:                40px;

font-family:        Lucida Grande, Verdana, Sans-serif;

font-size:            12px;

color:                #000;

}

#content  {

border:                #999 1px solid;

background-color:    #fff;

padding:            20px 20px 12px 20px;

}

h1 {

font-weight:        normal;

font-size:            14px;

color:                #990000;

margin:             0 0 4px 0;

}

&lt;/style&gt;

&lt;/head&gt;

&lt;body&gt;

    <div id="content">

        <h1>&lt;?php echo $heading; ?&gt;</h1>

        &lt;?php echo $message; ?&gt;

        <p>&lt;?=anchor('user/login', 'Please login to continue')?&gt;</p>

    </div>

&lt;/body&gt;

&lt;/html&gt;

And hey presto (example usage):

Code:
Admin extends Controller {

   function admin(){

      parent::Controller();

      if (!$this->user_auth->is_logged_in()) {

         show_401();

      }

   }

}