public function postSortFields(Request $request)
    {

        $req = $request->all();
        $data = Sort::orderBy('order', 'asc')->get();

        $sort = Sort::find($req['fieldId']);
        if ($req['order'] > $sort->order) {
            $sort->update(['order' => $req['order']]);
            foreach ($data as $key => $value) {
                if ($value->order <= $req['order'] && $sort->id != $value->id) {
                    $order = $key - 1 ;
                    if ($value->order == $req['order']) {
                        $order = $req['order'] - 1;
                    }

                    $value->order = $order;
                } elseif ($value->order > $req['order']) {
                    $value->order = $key;
                }
                $value->save();
            }
        } else {

            $sort->update(['order' => $req['order']]);

            foreach ($data as $key => $value) {
                if ($value->order >= $req['order'] && $value->id != $sort->id) {
                    $value->order = $key + 1;
                    $value->save();
                }
            }
        }

        return $this->success(Sort::orderBy('order', 'asc')->get());
    }