Level 47
If you're testing in browser, inspect click network tab and do what ever action required. You'll see a red request. Click it and you'll see a detailed error message.
Jan 8, 2017
13
Level 1
Ajax returning 500 internal server error
Hello guys, I'm new to Ajax and I am having a lot of trouble figuring out why I'm getting 500 status code everytime. I'm using POST method, and the route is set to POST as well. I'm correctly passing the CSRF_TOKEN in the data, so I really don't get what is going on. Here is the code...
The jQuery:
$(document).ready(function() {
var CSRF_TOKEN = $('meta[name="csrf-token"]').attr('content');
$.ajaxSetup({
headers: { 'X-CSRF-Token' : $('meta[name=_token]').attr('content') }
});
$.ajax({
type :"post",
url :"/updater",
dataType:"json",
data :{_token: CSRF_TOKEN,
pop: $("#pop-index").text(),
cash: $("#cash-index").text()},
timeout: 1000
})
});
The controller:
<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Input;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Response;
use App\Nation;
class GameInitialController extends Controller
{
/**
*
* Updates indexes
*
*/
public function makeUpdate()
{
$pop = Input::get("pop");
$cash = Input::get("cash");
$nation = Nation::find(Input::get("id"));
$nation->population = $nation->population * mt_rand(1,3);
$nation->save();
return Response::json(array("nation" => $nation));
}
}
The web.php file:
Route::post("/updater", "UpdateController@makeUpdate");
What could be wrong here? Thanks in advance!
Level 104
What does the error say - check in your browsers dev tools?
Level 8
Input::get("id")
thats the problem, you are not sending that in your ajax post
Level 1
Well, that's what shows up when I click the red request:
jquery-3.1.1.js:9536 POST http://localhost:8000/updater 500 (Internal Server Error)
send @ jquery-3.1.1.js:9536
ajax @ jquery-3.1.1.js:9143
(anonymous) @ updater.js:9
mightThrow @ jquery-3.1.1.js:3570
process @ jquery-3.1.1.js:3638
And maxnb, you are right, I forgot sending the id. But I fixed that and it still returns me 500.
Level 8
You are probably failing here
$nation = Nation::find(Input::get("id"))
It probably finds nothing and in next line you are doing this:
$nation->population = $nation->population * mt_rand(1,3);
$nation->save();
which will fail since nothing was found.
Since you do not understand how to use your browser to get a preview of the page that laravel returns where it gives you complete description of the error and which was described by other users above, you will need to start commenting out code until you get it to work, and then step by step uncomment it untill it starts to fail again. Then you will know what is failing.
Level 1
I think the method makeUpdate() doesn't event run. I'm pretty sure Nation::find(Input::get("id")) will find something, so that can't be causing the error. And I commented all the database-related lines. Nothing happened.
In fact, nothing happens even when I var_dump or dd the $nation variable.
Level 8
which browser are you using to test?
Level 1
Google Chrome.
Level 4
check your route it must be POST
and your ajax URL
url : {{(url('updater')}},
OR
url : "<?php echo url('updater'); ?>",
Regards Arfan
Level 8
learn how to debug ajax calls!
I made you a video just for that since you seem to not understand how it works:
https://www.youtube.com/watch?v=LFWFnE73q00
If you do everythng right you should get an error from Laravel explaning what you did wrong.
Level 1
Ok, thank you! I'll watch it.
Level 1
@tmybr11 Did you make your code work correctly?
Level 47
@tmybr11 your csrftoken name does not match
try
var CSRF_TOKEN = $('meta[name="csrf-token"]').attr('content');
$.ajaxSetup({
headers: { 'X-CSRF-Token' : $('meta[name=csrf-token]').attr('content') }
});
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