Laravel - How to retrieve values from a form and redirect using the Route class?

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I am studying Laravel and at the moment I am trying to understand how to send form values to be retrieved and then redirect to a specific page. I'm still starting with Laravel and I do not know if that's how it's done.

So let's say I have the following form: 

<form action="action_page.php">
  Username: <input type="text" name="userName"
  <input type="submit">
</form>

And here I have 2 questions:

  • I do not know if this is the correct place to retrieve form data
  • I do not know if this is the right way to do it.

    • In laravel I have the following route: 

    Route::post('/action_page',function(){
    $userName = Input::get('userName');//Não sei se isso está correto. 
    if($userName=='paulo'){
        retur view('pagina_paulo');
    }
    elseif($userName=='jose'){
        retur view('pagina_jose');
    }


});

    This is the error that appears: 

    methodNotallowedhttpexception in routecollection.php ...

    I researched this page

        
    asked by anonymous 13.07.2016 / 17:19

    2 answers

    2

    Retrieves data in Controller !

    In your View on the form it would look like this: 

    <form action="/action_page" method="post">
   ...

    In the routes.php file: 

    Route::post('/action_page', 'SeuController@redireciona');

    And lastly on your SeuController : 

    public function redireciona(Request $request)
{
    //Recupera o userName do input
    $usuario = $request->input('userName');
     ...
}

    I used the object Request that gets an instance of the current HTTP request.

    Obs: To use the Request class you must declare: use Illuminate\Http\Request; on top of your Controller

        
    13.07.2016 / 17:55
    0

    In summary, the error happens because you are trying to send a post to the /action_page.php (defined in your form) route, and you only define the /action_page route.

    I'll make some changes to your code and leave it as clear as possible for you to understand a basic flow of requests and responses involving parameters. Modify your view so that it stays this way (I recommend removing the route extension in the form action): 

    @if (Input::has('username'))
    <p>O valor antigo do campo username é {{ Input::old('username') }}.</p>
@endif

<form action="/action">
    <label for="username">Username</label>
    <input type="text" name="username">
    <input type="submit">
</form>

    Next, let's make this route respond with a method of controller , make the following changes:

    app \ Http \ routes.php 

    Route::post('/action', 'ExampleController@action');

    Now we need a controller, you can create it via the command line with php artisan make:controller ExampleController or manually, leave it this way:

    app \ Http \ Controllers \ ExampleController.php 

    ..

class ExampleController extends Controller
{
    public function action(Request $request)
    {
        return redirect()
            ->back()
            ->withInput($request->all());
    }
}

    In this way, you will notice that when the form is submitted, our route directs us to the action method of example controller , which then redirects us back to the form using redirect()->back() . This specific part of the code: 

    ..

->withInput($request->all())

..

    causes the previous (form) parameters to be sent along with the redirect (to the form page again), and this other specific part (of the form): 

    @if (Input::has('username'))
    <p>O valor antigo do campo username é {{ Input::old('username') }}.</p>
@endif

    shows the previous parameter with the username.

        
    13.07.2016 / 21:27
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