public function search($input)
    {
        $query = $this->model->orderBy('created_at', 'desc');

        $columns = Schema::getColumnListing('users');

        foreach ($columns as $attribute) {
            $query->orWhere($attribute, 'LIKE', '%'.$input.'%');
        };

        return $query->paginate(env('PAGINATE', 25));
    }