PDO: How to send an ajax serialized data to a php controller? - php

Question

I make a ajax call that is triggered when a checkbox is checked or unchecked. I am new to PDO mvc design. What I am attempting to do is when the ajax call is made the serialized data is passed to an object which calls a functions that sets this data in the DB.
ajax:
$('#interests').on('change', 'input', function (e){
e.preventDefault();
var str = $('#interests').serialize();
$.ajax({
type: 'POST',
url: 'index.php',
async: true,
traditional: true,
data: str,
success: function (msg) {
console.log(msg);
}
});
});
Interest controller:
class InterestController
{
function __construct(){}
public function set_user_interest()
{
$table='interests';
$_POST['Username']=$_SESSION['logname'];
$interest = new Interests($_POST, $table);
if ($interest->set_interest()) {
echo "interest were set";
}
else {
echo "something went wrong with interest";
}
# code...
}
All controllers are usually created by a routes file, which based on the string passed to the url constructs that object.
routes:
<?php
function call($controller, $action){
require_once('controllers/' . $controller . '_controller.php');
// create a new instance of the needed controller
switch($controller) {
case 'landing':
$controller = new LandingController();
break;
case 'login':
$controller = new LoginController();
break;
case 'signup_form':
$controller = new SignupFormController();
break;
case 'signup':
require_once 'models/users.php';
require_once 'models/interest.php';
$controller = new SignupController();
break;
case 'interest':
require_once 'models/interest.php';
$controller = new InterestController();
}
// call the action
$controller->{ $action }();
}
// just a list of the controllers we have and their actions
// we consider those "allowed" values
$controllers = array('landing'=>['landing_page', 'error'],
'signup_form'=>['set_signup_form', 'error'],
'signup'=>['create_user', 'error'],
'interest'=>['set_user_interest', 'error']
);
// check that the requested controller and action are both allowed
// if someone tries to access something else he will be redirected to the error action of the pages controller
if (array_key_exists($controller, $controllers)) {
if (in_array($action, $controllers[$controller])) {
call($controller, $action);
} else {
call('landing', 'error');
}
} else {
call('landing', 'error');
}
?>
index.php:
<?php
session_start();
require_once('Water.inc');
if (isset($_GET['controller']) && isset($_GET['action'])) {
$controller = $_GET['controller'];
$action = $_GET['action'];
} else {
$controller = 'landing';
$action = 'landing_page';
}
require_once 'views/layout.php';
?>
How would i send a serialized form to a controller that sends it to the database, using ajax?

Answer 1

Select Country
">
Select State
Select City
<script type="text/javascript">
$(document).ready(function(){
$("#COUNTRIES").change(function(){
var CID = $('#COUNTRIES').val();
$.ajax({
method:'post',
url:'<?php echo base_url('index.php/Userc/SERVICE2') ?>',
data: {"CID":CID},
dataType:'json',
success: function(result){
$('#STATES').html(result); },
});
});
//*********************controller******************//
public function SERVICE2(){
if ($this->input->post('CID')) {
$CID = $this->input->post('CID');
$where = array('CID' => $CID);
$query['P'] = $this->Model1->displaywhere('states',$where);
$html = '<option>Select State</option>';
foreach($query['P'] as $row) {
$html .="<option value=".$row['SID'].">".$row['SNAME']."</option>";}
echo json_encode($html); // must..}