Jquery non riesce a inviare a php

[lukezz]

Salve a tutti, ho scaricato un template per amministrazione, originalmente nella pagina login.php è un file jquery che prende i dati dal form e li invia ad un'altra pagina che si connette al db e da un risultato.
Bando alle ciance.

login.php:

<form method="post" role="form" id="form_login">
                                <div class="form-group">
                                        <div class="input-group">
                        <div class="input-group-addon">
                            <i class="entypo-user"></i>
                        </div>
<input type="text" class="form-control" name="username" id="username" placeholder="Username" autocomplete="off" />
                    </div>
                                    </div>
                                <div class="form-group">
                                        <div class="input-group">
                        <div class="input-group-addon">
                            <i class="entypo-key"></i>
                        </div>
<input type="password" class="form-control" name="password" id="password" placeholder="Password" autocomplete="off" />
                    </div>
                                </div>
                                <div class="form-group">
                    <button type="submit" class="btn btn-primary btn-block btn-login">
                        <i class="entypo-login"></i>
                        Login In                    </button> 
               </div>       
                                 </form>

<script src="<?php echo ADMIN_URL; ?>assets/js/neon-login.js"></script>

neon-login.js:

var neonLogin = neonLogin || {};
;(function($, window, undefined){ 
   "use strict";  
      $(document).ready(function()    { 
       neonLogin.$container = $("#form_login"); 
                       // Login Form & Validation
        neonLogin.$container.validate({ 
           rules: { 
              username: { 
                   required: true
                    },
                                password: {
                    required: true 
               },
                            },
                        highlight: function(element){
  $(element).closest('.input-group').addClass('validate-has-error'); 
           },
                        unhighlight: function(element) { 
               $(element).closest('.input-group').removeClass('validate-has-error');
            }, 
                       submitHandler: function(ev) 
           { 
               /* Login form now processes the login data */
                                $(".login-page").addClass('logging-in');
 // This will hide the login form and init the progress bar
// Hide Errors 
               $(".form-login-error").slideUp('fast');
                // We will wait till the transition ends
                                setTimeout(function()
                { 
                   var random_pct = 25 + Math.round(Math.random() * 30);
                                        // The form data are subbmitted, we can forward the progress to 70%
                    neonLogin.setPercentage(40 + random_pct);
                                                                // Send data to the server
                    $.ajax({
                        url: 'heart/RYVAjax.php',
                        method: 'POST',
                        dataType: 'json',
                        data: { 
                           username: $("input#username").val(),
                           password: $("input#password").val(),
                        },
                        success: function(response)
                        {
                            // Login status [success|invalid]
                            var login_status = response.login_status;
// Form is fully completed, we update the percentage
                            neonLogin.setPercentage(100);                                                                           // We will give some time for the animation to finish, then execute the following procedures
                                setTimeout(function()
                            {
                                // If login is invalid, we store the 
                                if(login_status == 'true')
                                {
                                    window.location = "index.php";
                                }
                                else
                                                                {
                                    // Redirect to login page
                                    setTimeout(function()
                                    { 
                                    $(".login-page").removeClass('logging-in');
                                    neonLogin.resetProgressBar(true);
                                    }, 400);
                                }
                                                            },1000);
                        } 
                   }); 
                                                           }, 650);
            }
        });

RYVAjax.php

$action = $_POST['action'];
switch ($action) {
    case 'checkLogin':
        $logged = $login->userLogin($_POST['username'], $_POST['password']);
        if($logged === true)
        echo json_encode("true");
        break; 

RYVAjax.php fa il controllo su un altro file che si connette al db ecc, quindi se logged is true mi restituisce true

Se provo a fare il login su login.php mi carica la barra fino al 70% e si blocca non mi da ne l'errore ne niente.

Grazie anticipatamente.

Mi scuso per il codice disordinato ma non riesco a sistemarlo.