How to use $_GET variable from AJAX - LARAVEL - laravel

Question

I need to use the $_GET variable into the blade.
The AJAX code work good, i received an alert with the correct value but i can't use it into the blade.
Route:
/*
|--------------------------------------------------------------------------
| Routes per gestire la pagina "Home"
|--------------------------------------------------------------------------
*/
Route::get('/home', 'HomeController#index');
Route::get('/home', array('as' => 'success', 'uses' => 'StatisticheController#totaleRichiesteAnnue'));
home.blade.php
#if(isset($_GET['tipologia_evento_id']))
<div class="form-group">
{!! Form::label('responsabile', 'Responsabile') !!}
{!! Form::text('responsabile', old('_responsabile'), ['class' => 'form-control','disabled'=>'disabled']) !!}
</div>
#endif
<script>
var tipologia_evento_id = event.tipologia_evento_id;
$.ajax({
type: "GET",
url: '/home',
data: { tipologia_evento_id: tipologia_evento_id},
success: function(msg)
{
alert(tipologia_evento_id);
$('#modal-event').modal('show');
}
});
</script>

Answer 1

In laravel 5 request() helper is available globaly
#if(request()->tipologia_evento_id)
<div class="form-group">
{!! Form::label('responsabile', 'Responsabile') !!}
{!! Form::text('responsabile', old('_responsabile'), ['class' => 'form-control','disabled'=>'disabled']) !!}
</div>
#endif
request()->tipologia_evento_id is not set it will return null
Hope this helps

Answer 2

You can use the Request facade:
Request::get('tipologia_evento_id');
More details on: https://laravel.com/docs/5.6/requests

Answer 3

You should try below code:
#if(app('request')->input('tipologia_evento_id'))
<div class="form-group">
{!! Form::label('responsabile', 'Responsabile') !!}
{!! Form::text('responsabile', old('_responsabile'), ['class' => 'form-control','disabled'=>'disabled']) !!}
</div>
#endif
OR
#if(Request::get('tipologia_evento_id'))
<div class="form-group">
{!! Form::label('responsabile', 'Responsabile') !!}
{!! Form::text('responsabile', old('_responsabile'), ['class' => 'form-control','disabled'=>'disabled']) !!}
</div>
#endif

Answer 4

As you already have route and controller, why not pass it from controller and use it in view?
class HomeController extends Controller
{
public function index(Request $request)
{
$getData = $request->all();
return view('home', compact('getData'));
}
}
in your view you can easily access as $getData
So your home.blad.php will look something like this
#if($getData->tipologia_evento_id)
<div class="form-group">
{!! Form::label('responsabile', 'Responsabile') !!}
{!! Form::text('responsabile', old('_responsabile'), ['class' => 'form-control','disabled'=>'disabled']) !!}
</div>
#endif
EDIT:
If you want to get json response using ajax
class HomeController extends Controller
{
public function index(Request $request)
{
$getData = $request->all();
return response()->json($getData);
}
}