[jQuery] help: Zend Framework and JQuery validation plugin

[jQuery] help: Zend Framework and JQuery validation plugin


Hi!
I try to use Zend Framework with JQuery validation plugin. Standard
validation of forms works good but when I want to remote validate (f.e
check a login in database) remote function dosen't work. Below I write
a code with method from controller and views listing:
Method from controller:
function checkloginAction(){
$request = trim(strtolower($_REQUEST['login'])); //take data
from global REQUEST array
$users = new Users(); //make a new class with users
$select = $users->select(); //select users where
the login
$select->where('login = ?', $request); //is the same like from
REQUEST array
$login = $users->fetchAll($select);
if ( $login->login == '' ) { //if login is empty
$valid = 'true'; //make valid true
}else{ //else
$valid = 'false'; //make valid false
}
$this->view->valid = $valid; //pass the valid to view
}
Checklogin view (checklogin.phtml):
<?php
echo $this->valid; //show result of valid
?>
Registration form view:
...
<script type="text/javascript" src="<?php echo $this->baseUrl;?>/
public/scripts/jquery.js"></script>
<script type="text/javascript" src="<?php echo $this->baseUrl;?>/
public/scripts/jquery.validate.js"></script>
...
<script type="text/javascript">
$(document).ready(function() {
    // validate signup form on keyup and submit
    var validator = $("#signupform").validate({
        rules: {
            login: {
                required: true,
                minlength: 2,
                remote: "checklogin" <-- dosen't work
            },
            pass: {
                required: true,
                minlength: 5
            },
            pass_confirm: {
                required: true,
                minlength: 5,
                equalTo: "#pass"
            }
        },
        messages: {
            login: {
                required: "Enter login",
                minlength: jQuery.format("Enter at least {0} characters"),
                remote: jQuery.format("{0} is already in use")
            },
            pass: {
                required: "Enter password",
                minlength: jQuery.format("Enter at least {0} characters")
            },
            pass_confirm: {
                required: "Repeat password",
                minlength: jQuery.format("Enter at least {0} characters"),
                equalTo: "Powtórzone hasło jest nieprawidłowe"
            }
},
        // set this class to error-labels to indicate valid fields
success: function(label) {
            // set &nbsp; as text for IE
            label.html("&nbsp;").addClass("checked");
        }
    });
});
</script>
...
<form action="" id="signupform" autocomplete="off" method="post">
<label for="login">Login*:</label><br />
<input id="login" type="text" name="login" /><span
class="status"></span><br />
<label for="pass">Password*:</label><br />
<input id="pass" type="password" name="pass" /><span
class="status"></span><br />
<label for="pass">Confirm password*:</label><br />
<input id="pass_confirm" type="password" name="pass_confirm" /