Simple Laravel Datatables ajax Draw

<?php

namespace App\Libraries;

class Datatables
{
    public static $request;
    public static $query;
    public static $records_total;
    public static $records_filtered;

    static function make($request, $model)
    {
        self::$request = $request;
        self::$query = $model->getQuery();
        self::set_records_total();
        self::filter();
        self::set_records_filtered();
        self::order_limit();
        self::render_json();
    }

    static function set_records_total()
    {
        self::$records_total = self::$query->count();
    }


    static function filter()
    {
        if (!empty(self::$request['search']['value'])) {
            foreach (self::$request['columns'] as $column) {
                if ($column['searchable'] == 'true') {
                    self::$query->orWhere($column['data'], 'like', '%' . self::$request['search']['value'] . '%');
                }
            }
        }
    }

    static function set_records_filtered()
    {
        self::$records_filtered = self::$query->count();
    }

    static function order_limit()
    {
        $start=isset(self::$request['start'])? self::$request['start']:0;
        $length = isset(self::$request['length']) ? self::$request['length'] : 1;
        self::$query->orderBy('id','desc');
        self::$query->skip($start)->take($length);
    }


    static function render_json()
    {
        $array = [];
        $array['draw'] = self::$request['draw'];
        $array['recordsTotal'] = self::$records_total;
        $array['recordsFiltered'] = self::$records_filtered;
        $array['data'] = [];
        $results = self::$query->get();
        $array['data']=$results->toArray();
        echo json_encode($array);
    }
}

//HOW TO USE

$query = Users::select('id', 'name');
return Datatables::make($request, $query);