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+--- Thread: Simple POST request - not getting to controller? (/showthread.php?tid=80719)
Simple POST request - not getting to controller? - gazer - 12-08-2021
Is there some setting I'm missing to get a post request to go to the correct controller?
I've tried to isolate the issues with a simple test controller and view, but somehow, the POST request appears to get redirected elsewhere to a fully different controller. What would cause this?
The view, test.php:
Code:
<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Post test</title>
</head>
<body>
<h2>Testing XMLHttpRequest Object</h2>
<button type="button" onclick="loadDoc()">Request data</button>
<p id="demo"></p>
<script>
function loadDoc() {
const xhttp = new XMLHttpRequest();
xhttp.onload = function() {
console.log(this);
var jsonObj = JSON.parse(this.responseText);
document.getElementById("demo").innerHTML = jsonObj.response;
}
xhttp.open("POST", "<?= base_url('test/detail'); ?>", true);
xhttp.setRequestHeader("Content-type", "application/json");
var data = {uid:1234};
xhttp.send(JSON.stringify(data));
}
</script>
</body>
</html>The controller:
PHP Code:
<?php
namespace App\Controllers;
class Test extends BaseController {
public function index() {
echo view('test');
}
public function detail() {
//DEBUG
$info = [
'method' => $this->request->getMethod(),
];
log_message('debug', 'In test/detail, method={method}', $info);
$response = [
"response" => "Working",
];
return $this->response->setJSON($response);
}
}
Routes.php:
PHP Code:
<?php
namespace Config;
// Create a new instance of our RouteCollection class.
$routes = Services::routes();
// Load the system's routing file first, so that the app and ENVIRONMENT
// can override as needed.
if (file_exists(SYSTEMPATH . 'Config/Routes.php')) {
require SYSTEMPATH . 'Config/Routes.php';
}
/*
* --------------------------------------------------------------------
* Router Setup
* --------------------------------------------------------------------
*/
$routes->setDefaultNamespace('App\Controllers');
$routes->setDefaultController('Home');
$routes->setDefaultMethod('index');
$routes->setTranslateURIDashes(false);
$routes->set404Override();
$routes->setAutoRoute(true);
/*
* --------------------------------------------------------------------
* Route Definitions
* --------------------------------------------------------------------
*/
// We get a performance increase by specifying the default
// route since we don't have to scan directories.
$routes->post('test/detail', 'Test::detail');
/*
* --------------------------------------------------------------------
* Additional Routing
* --------------------------------------------------------------------
*
* There will often be times that you need additional routing and you
* need it to be able to override any defaults in this file. Environment
* based routes is one such time. require() additional route files here
* to make that happen.
*
* You will have access to the $routes object within that file without
* needing to reload it.
*/
if (file_exists(APPPATH . 'Config/' . ENVIRONMENT . '/Routes.php')) {
require APPPATH . 'Config/' . ENVIRONMENT . '/Routes.php';
}
Apache log - note the last line where it appears to redirect to another controller in the app:
Code:
127.0.0.1 - - [08/Dec/2021:13:01:42 -0500] "GET /test HTTP/1.1" 200 800
127.0.0.1 - - [08/Dec/2021:13:02:12 -0500] "POST /test/detail HTTP/1.1" 303 411
127.0.0.1 - - [08/Dec/2021:13:02:12 -0500] "GET /index.php/ride/list HTTP/1.1" 200 9781Codeigniter log - never gets to the detail function, as you'd see a DEBUG line here:
Code:
INFO - 2021-12-08 13:02:12 --> Session: Class initialized using 'CodeIgniter\Session\Handlers\FileHandler' driver.
INFO - 2021-12-08 13:02:12 --> Session: Class initialized using 'CodeIgniter\Session\Handlers\FileHandler' driver.Finally, .htaccess, which I don't believe I've modified:
Code:
# Disable directory browsing
Options All -Indexes
# ----------------------------------------------------------------------
# Rewrite engine
# ----------------------------------------------------------------------
# Turning on the rewrite engine is necessary for the following rules and features.
# FollowSymLinks must be enabled for this to work.
<IfModule mod_rewrite.c>
Options +FollowSymlinks
RewriteEngine On
# If you installed CodeIgniter in a subfolder, you will need to
# change the following line to match the subfolder you need.
# http://httpd.apache.org/docs/current/mod/mod_rewrite.html#rewritebase
# RewriteBase /
# Redirect Trailing Slashes...
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_URI} (.+)/$
RewriteRule ^ %1 [L,R=301]
# Rewrite "www.example.com -> example.com"
RewriteCond %{HTTPS} !=on
RewriteCond %{HTTP_HOST} ^www\.(.+)$ [NC]
RewriteRule ^ http://%1%{REQUEST_URI} [R=301,L]
# Checks to see if the user is attempting to access a valid file,
# such as an image or css document, if this isn't true it sends the
# request to the front controller, index.php
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^([\s\S]*)$ index.php/$1 [L,NC,QSA]
# Ensure Authorization header is passed along
RewriteCond %{HTTP:Authorization} .
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
</IfModule>
<IfModule !mod_rewrite.c>
# If we don't have mod_rewrite installed, all 404's
# can be sent to index.php, and everything works as normal.
ErrorDocument 404 index.php
</IfModule>
# Disable server signature start
ServerSignature Off
# Disable server signature endAny ideas?
RE: Simple POST request - not getting to controller? - gazer - 12-08-2021
Solved it after posting: CSRF was getting in the way. Implementing in view and controller resolved it. See examples below for future reference (showing both POST and GET methods).
view:
Code:
<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Post test</title>
</head>
<body>
<input type="hidden" id="csrf_txt" name="<?= csrf_token() ?>" value="<?= csrf_hash() ?>" />
<h2>Testing XMLHttpRequest Object - Post</h2>
<button type="button" onclick="loadDoc()">Request data</button>
<p id="demo"></p>
<h2>Testing XMLHttpRequest Object - Get</h2>
<button type="button" onclick="loadDocGet()">Request data</button>
<p id="demo_get"></p>
<script>
function loadDoc() {
const xhttp = new XMLHttpRequest();
// CSRF Hash
var csrf = document.getElementById("csrf_txt");
var csrfName = csrf.getAttribute("name"); // CSRF Token Name
var csrfHash = csrf.getAttribute("value"); // CSRF Hash
xhttp.onload = function() {
console.log(this);
var jsonObj = JSON.parse(this.responseText);
// Update CSRF hash
document.getElementById("csrf_txt").setAttribute("value", jsonObj.token);
document.getElementById("demo").innerHTML = jsonObj.response;
}
xhttp.open("POST", "<?= base_url('test/detail'); ?>", true);
xhttp.setRequestHeader("Content-type", "application/json");
var data = {uid:1234,[csrfName]:csrfHash};
xhttp.send(JSON.stringify(data));
}
function loadDocGet() {
const xhttp = new XMLHttpRequest();
xhttp.onload = function() {
console.log(this);
var jsonObj = JSON.parse(this.responseText);
document.getElementById("demo_get").innerHTML = jsonObj.response;
}
xhttp.open("GET", "<?= base_url('test/detail?uid=4321'); ?>", true);
xhttp.send();
}
</script>
</body>
</html>And Controller:
PHP Code:
<?php
namespace App\Controllers;
class Test extends BaseController {
public function index() {
echo view('test');
}
public function detail() {
//DEBUG
$info = [
'method' => $this->request->getMethod(),
'uid' => $this->request->getVar('uid'),
];
log_message('debug', 'In test/detail, method={method}, uid={uid}', $info);
$response = [
"response" => "Working - ".$this->request->getVar('uid'),
"token" => csrf_hash(),
];
return $this->response->setJSON($response);
}
}