drb/app/Scopes/DepartmentScope.php

<?php
namespace App\Scopes;

use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Scope;

class DepartmentScope implements Scope
{
    public $depart_id = [];
    public $is_main = 0;
    public $user_id = 0;

    public function __construct($depart_id = [], $is_main = 0, $user_id = 0)
    {
        if(! is_array($depart_id)) $depart_id = [$depart_id];
        $this->depart_id = $depart_id;
        $this->is_main = $is_main;
        $this->user_id = $user_id;
    }

    public function apply(Builder $builder, Model $model)
    {
        if(! $this->is_main) {
            $depart_id = $this->depart_id;
            $user_id = $this->user_id;
            $builder->where(function ($query) use ($depart_id,$user_id){
                $query->whereIn('depart_id', $depart_id)
                    ->orWhere('crt_id', $user_id);
            });
        }
    }
}