Laravel insert into Database

I have the following problem: I want to insert into my database, with input fields. Here is my html:

<div class="row">
    <form action="" method="post">
        <input type="hidden" name="_token" value=""> 
        <div class="col-md-2 col-sm-2">
            <label for="MtrNr">MtrNr:</label>
            <input type="text" name="MtrNr" class="form-control">
        </div>
        <div class="col-md-2 col-sm-3">
            <label for="Vorname">Vorname:</label>
            <input type="text" name="Vorname" class="form-control">
        </div>

        <div class="col-md-2 col-sm-3">
            <label for="Nachname">Nachname:</label>
            <input type="text" name="Nachname" class="form-control" >
        </div>
        <div class="col-md-2 col-sm-2">
            <label for="Klassenname">Klassenname:</label>
            <input type="text" name="Klassenname" class="form-control">
        </div>
        <div class="col-md-2 col-sm-2">
            <button class="btn btn-primary option-button button_rowAllign" type="submit">Schüler hinzufügen</button>
        </div>
    </form>
</div>

My controller:

  public function store(Request $request)
{
    $user = new schueler;
    $user->MatNr = Input::get("MtrNr");
    $user->vorname = Input::get("Vorname");
    $user->nachname = Input::get("Nachname");
    $user->klassenname = Input::get("Klassenname");

}

And here my routes:

Route::post("", "test@store");

The thing is, that I already inserted into my database. But when i tried to reproduce it, it doesn't work. For local server I use xampp. I hope you can help me.

via Rechenmeister