public function getDelete($sid)
 {
     $purchase = UserPricelist::find($sid);
     if ($purchase == null) {
         $errors = new \Illuminate\Support\MessageBag();
         $errors->add('userError', "The purchase record may have already been deleted.");
         return redirect('admin/purchases')->withErrors($errors);
     }
     $purchase->delete();
     return redirect('admin/purchases');
 }