public function postEliminar()
{
$acidez = Acidez::find(Input::get('id'));
$lote = Lote::where('acidez_id', '=', Input::get('id'));
if ($lote->count()) {
$lote = $lote->first();
$lote->acidez_id = 0;
$lote->save();
}
$acidez->delete();
}