public function yajra(Request $request)
    {
        DB::statement(DB::raw('set @rownum=0'));
        $users = \DB::table('m_supplier')->select([
            DB::raw('@rownum  := @rownum  + 1 AS rownum'),
            'id_supplier',
            'nama',
            'email',
            'website',
            'no_hp',
            'kota',
            'alamat',
            'created_at']);
        $datatables = Datatables::of($users)->addColumn('active',function($dt){
            $data = '<p><input type="checkbox" class="aktif"></p>';
            return $data;
        })->rawColumns(['active']);

        if ($keyword = $request->get('search')['value']) {
            $datatables->filterColumn('rownum', 'whereRaw', '@rownum  + 1 like ?', ["%{$keyword}%"]);
        }

        return $datatables->make(true);
    }