{!! Form::label('postal_code', 'Codigo postal:', ['class' => 'col-sm-4 control-label']) !!}
{!! Form::text('postal_code', null, ['class' => 'form-control', 'required' => 'required','onkeypress' => 'return justNumbers(event)','maxlength' => 5]) !!}
{{ $errors->first('postal_code') }}