Login

11-15-2012, 06:35 AM

[eluser]fatfishy[/eluser]
Hey I'm new to Codeigniter and I'm wondering why I'm having problems to combine codeigniter with jquery ajax form posts ..

this my form
test.php (views/test.php)

Code:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

&lt;html&gt;

&lt;head&gt;

 [removed][removed]

  [removed]

$(document).ready(function() {

  $('#username').blur(function() {

    var username = $("#username").val();

 var dataString = 'username=' + username;

  alert(username);

 $.ajax({

  type: "POST",

  url: "/index.php/ajax/username_taken",

  data: dataString,

  success: function(msg) 

        {

   $("#status").html(msg);

  }

  });

  });  

});

  &lt;/script&gt;

&lt;/head&gt;

&lt;body&gt;

&lt;form action="" method="post"&gt;

 username: &lt;input type="text" id="username" /&gt; &lt;br /&gt; 

&lt;/form&gt;

&lt;div id="status"&gt;&lt;/div&gt;

&lt;/body&gt;

&lt;/html&gt;

yeah I know I can user form helper, I'm just playing with it ...

and this is controller (controllers/ajax.php)

Code:
&lt;?php

class Ajax extends CI_Controller {

  public function username_taken()

  {

    $this->load->model('Login');

    $username = trim($_POST['username']);

    if ($this->Login->login_check($username)) 

      echo "exists";

   else

 echo "not exists";

  }

}

/* End of file ajax.php */

/* Location: ./system/application/controllers/ajax.php */

?&gt;

and this is the model, login.php (models/login.php)

Code:
&lt;?php

class Login extends CI_Model {

 function login_check($username)

 {

  $this -> db -> select('id, username');

  $this -> db -> from('users');

  $this -> db -> where('username = ' . "'" . $username . "'");

  $this -> db -> limit(1);

  $query = $this -> db -> get();

  if($query -> num_rows() >= 1)

  {

   return true;

  } else

   return false;

 }

}

?&gt;

now, I do getting the alerts with the username I've putted in, but I don't get the result from the server side (exists / not exists) ... I wonder why, what I'm doing wrong.

thanks a lot for the help Smile