สงสัยเกี่ยวกับการตรวจสอบค่าซ้ำในฟอร์มด้วย jquery ใช้โครงสร้างแบบ mvc

<form method="post" action="<?php echo URL;?>register/create" autocomplete="off" id="frmRegister">
    <label>Name</label><input type="text" name="name" placeholder="Name input" id="name"/><br />
    <label>Surname</label><input type="text" name="surname" placeholder="Surname input" id="surname"/><br />
    <label>Gender</label>
        <select name ="gender" id="gender">
            <option value="male">Male</option>
            <option value="female">Female</option>
        </select><br />
    <label>Email</label><input type="text" name="email" placeholder="Email input" id="email"/><br />
    <label>Login</label><input type="text" name="login" placeholder="Login input" id="login"/><br />
    <label>Password</label><input type="password" name="password" placeholder="Password Input" id="password"/><br />
    <label>Verify Password</label><input type="password" name="verify" placeholder="Verify Input" id="verify"/><br />
    <label>Role</label>
        <select name="role">
            <option value="default">Default</option>
            <option value="admin">Admin</option>
        </select><br />
    <label>&nbsp;</label><input type="submit"/>
</form>

-มีไฟล์ .js เขียนสคริปต์ตรวจสอบ textbox
<script>
$(function(){
    $('#frmRegister').validate({
        rules: {
            name:{ required:true },
            surname:{ required:true },
            email:{ required:true, email:true, remote:'register/create' },
            login:{ required:true, minlength:4, remote:'register/create' },
            password:{ required:true, minlength:8 },
            verify:{ required:true, equalTo:'#verify' }
        },

    });
});
</script>

<php
    public function create() {
        $data = array();
        $data['mbName'] = $_POST['name'];
        $data['mbSurname'] = $_POST['surname'];
        $data['mbGender'] = $_POST['gender'];
        $data['mbEmail'] = $_POST['email'];
        $data['mbLogin'] = $_POST['login'];
        $data['mbPassword'] = $_POST['password'];
        //@TODO: Do your error checking!
        $this->model->create($data);
        header('location: ' . URL . 'register');
    }
?>