laravel datatable cacher

laravel datatable cacher.php

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class BrowseController extends Controller
{

    // dattable cacher
    public function datatable(Request $request)
    {
        // dd($this->datatable1($request));
        $input = $request->all();
        $cacheInput = $request->except(['_', 'draw']);

        $cacheKey = 'browse.'.\Auth::user()->id.'datatable.'.md5(json_encode($cacheInput));
        $_this = $this;
        $output = \Cache::remember($cacheKey, 1, \Closure::fromCallable([$this, '_datatable']));

        $output['draw'] = $input['draw'];
        $output['input'] = $input;
        return $output;
    }

    /**
     * Display datatable
     *
     * @return \Illuminate\Http\Response
     */
    public function _datatable()
    {
        $q = \App\PpdbRegistration::select('id, a, b, c');
        return \DataTables::of($q)
                    ->filter(function ($query) {
                        if (\Request::has('search.value')) {
                            $query->where(function($query) {
                                $qv = \Request::input('search.value');
                                $query->orWhere('a', 'like', "%{$qv}%");
                            });
                        }
                    })
                    ->orderColumn('id', 'id $1')
                    // .
                    // .
                    // .
                    ->toArray();
    }
}