Ajax on JQuery drag event - php

Question

I'm creating a nested list with data from database. On this list, I'm using the JQuery UI Drag effect. What I need to do is when the drag is over, it will update the database.
The list coints Professor's name and his ID, it has as sub-list with his classes, like:
John teaches Math & physics, Dwayne teaches English.
John
*Physics
*Math
Dwayne
*English
Let's say I want to give Math class to Dwayne. So I'll drag Math from John and drop it on Dwayne sub-list. It's working fine.
What I can't do is to make the update on database, because John no longer teaches Math instead John is going to teach it. So I need to make an update there or a delete+insert.
Obs: I'm using laravel
Here is my Code:
#extends('app')
#section('assets')
<script type="text/javascript" src="{{ URL::to('/js/jquery.mjs.nestedSortable.js') }}"></script>
#stop
#section('content')
<ol>
#foreach($professores as $prof)
<li data-id=" {{ $prof->id }}">
{{ $prof->nome }}
<ol class="list-disc">
#foreach($prof->disc as $disc)
<li data-id="{{ $disc->id }}">{{ $disc->nome }}</li>
#endforeach
</ol>
</li>
#endforeach
</ol>
<script type="text/javascript">
$(function(){
var old_teacher;
$('.list-disc').sortable({
connectWith: '.list-disc',
start: function (event, ui){
old_teacher = ui.item.parent().parent().attr('data-id');
},
stop: function (event, ui){
$.ajax({
type: "POST",
url: '{{ URL::to("/professor") }}',
data: {disc: ui.item.attr('data-id'), professor: ui.item.parent().parent().attr('data-id'), old: old_teacher},
success: function(data){
console.log(data);
}
});
}
});
})
</script>
#stop
With this currently code, When I drop the item I get:
Internal Server Error (500)
UPDATE
Route File:
Route::post('professor', [
'uses' => 'ProfessorController#postProfessorList'
]);
Controller File:
public function postProfessorList()
{
Professor::submit(Input::post('disciplina'), input::post('professor'), input::post('old'));
}
Log file: Update
local.ERROR: exception 'Symfony\Component\Debug\Exception\FatalErrorException' with message 'Call to undefined method Illuminate\Http\Request::post()' in F:\PathToProject\vendor\laravel\framework\src\Illuminate\Support\Facades\Facade.php:210

Answer 1

Internal Server Error (500) means that something is wrong with your server-side (laravel) code.
Can you provide us with the code which is used in POST: /professor ?
EDIT
You might want to check your logs in app/storage or storage/ (depending on the laravel version). They should give you a better description of the error that occurs.
Also, you should replace Input::post('...') with Input::get('...') laravel takes care of $_GET and $_POST variables automatically.
EDIT 2
The error you get is due to Laravels CSRF protection.
You will need to set the csrf token in your ajax request like that:
data: {disc: ....., _token: '{{csrf_token()}}' }