Laravel 4-Redirect::back() nicht zur vorherigen Seite (aktualisieren aktuelle Seite)

Habe ich eine einfache Lavel-4-Projekt und ich bin versucht zu tun, eine einfache Umleitung auf die Vorherige Seite nach dem die Informationen vorgelegt wurde. Jedoch beim einfügen Redirect::back() es nur aktualisieren der aktuellen Seite. Wie kann ich die Umleitung ordnungsgemäß auf der vorherigen Seite war auf?

Controller

    public function saveCustomer($id) { 

    $zip_code = DB::table('zip_codes')
                    ->where('zip_code', Input::get('user_zip_code'))
                    ->first();  

    if (!empty(Input::get('user_id'))) {
        $user_id = Input::get('user_id');

        $user = User::find($user_id);

        $user->user_zip_code = $zip_code->zip_code;

        $user->office = $zip_code->office;

        $user->save();

    } else {
        $user_id = NULL;
    }       

    $userdata = [
                'user_id' => $user_id,
                'first_name' => Input::get('first_name'),
                'last_name' => Input::get('last_name'),
                'street_1' => Input::get('street_1'),  
                'street_2' => Input::get('street_2'),  
                'apartment' => Input::get('apartment'),
                'phone_1' => Input::get('phone_1'),  
                'phone_2' => Input::get('phone_2'),
                'state' => 'Alabama',
              'user_zip_code' => Input::get('user_zip_code'),
              'city' => $zip_code->city
            ];                
            $rules = array(
                'first_name' => 'required',
                'last_name' => 'required',
                'street_1' => 'required',
                'phone_1' => 'required'
            );

            $validation = Validator::make($userdata, $rules);

            if($validation->fails()){
                return Redirect::to("customer/edit/$id")->withErrors($validation)->withInput();
            } 

            UsersInformation::find($id)->update($userdata);

            return Redirect::back();

Blade Vorlage

    {{ Form::open(array('name' => 'edit customer', 'action' => array('CustomerController@saveCustomer', $customer->id)))}}
       @foreach($errors->all() as $error)
                <p class="albox errorbox">{{$error}}</p>
            @endforeach
            <div class="four columns">      
        @if (isset($customer->first_name))
            {{ Form::hidden('user_id', '' . $customer->user_id . '')}}
        @endif                  
        <label class="form">First Name:</label> <span class="required"> (required)</span><br />
        @if (isset($customer->first_name))
            {{ Form::text('first_name', '' . $customer->first_name . '')}}<br />
        @else
            {{ Form::text('first_name')}}<br />
        @endif

        <label class="form">Last Name:</label> <span class="required"> (required)</span><br />
        @if (isset($customer->last_name))
            {{ Form::text('last_name', '' . $customer->last_name . '')}}<br />
        @else
            {{ Form::text('last_name')}}<br />
        @endif

        <label class="form">Primary Street:</label> <br />
        @if (isset($customer->street_1))
            {{ Form::text('street_1', '' . $customer->street_1 . '')}}<br />
        @else
            {{ Form::text('street_1')}}<br />
        @endif  

        <label class="form">Secondary Street:</label> <br />
        @if (isset($customer->street_2))
            {{ Form::text('street_2', '' . $customer->street_2 . '')}}<br />
        @else
            {{ Form::text('street_2')}}<br />
        @endif              

        <label class="form"> Primary Phone Number:</label> <br />
        @if (isset($customer->phone_1))
            {{ Form::text('phone_1', '' . $customer->phone_1 . '')}}<br />
        @else
            {{ Form::text('phone_1')}}<br />
        @endif

        <label class="form">Secondary Phone Number:</label> <br />
        @if (isset($customer->phone_2))
            {{ Form::text('phone_2', '' . $customer->phone_2 . '')}}<br />
        @else
            {{ Form::text('phone_2')}}<br />
        @endif          

        <label class="form">Apartment:</label><br />
        @if (isset($customer->apartment))
            {{ Form::text('apartment', '' . $customer->apartment . '')}}<br />
        @else
            {{ Form::text('apartment')}}<br />
        @endif
<label class="form">City/Zip Code:</label> <span class="required"> (required)</span><br />      
        <select name="user_zip_code"> 
            <option value='{{{ $customer->user_zip_code }}}'>{{{ $customer->city  }}} - {{{ $customer->user_zip_code }}}</option>
             @foreach ($zip_code as $zip_codes)
                <option value='{{ $zip_codes->zip_code  }}'>{{ $zip_codes->city  }} - {{ $zip_codes->zip_code  }}</option>
             @endforeach
        </select><br />         

<button type="submit" class="button is-success">Save</button><br /><br />
            </div>
{{ Form::close() }}

Nicht sicher, ob benötigt, aber hier ist auch meine route.php Seite

Route::get('customer/edit/{id}', 'CustomerController@editCustomer');