drb/app/Scopes/TopDepartmentScope.php

<?php
namespace App\Scopes;

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

//只判断顶级id
class TopDepartmentScope implements Scope
{
    public $user = [];
    public $search = [];

    public function __construct($user = [], $search = [])
    {
        $this->user = $user;
        $this->search = $search;
    }

    public function apply(Builder $builder, Model $model)
    {
        if(empty($this->search['top_depart_id'])){
            //默认进来 只显示自己公司下的 自己权限范围下的部门数据
            $top_depart_id = $this->user['depart_top'][0] ?? [];
            $top_depart_id = $top_depart_id['depart_id'] ?? 0;
        }else{
            //查询给的公司下的 自己权限范围下的部门数据
            $top_depart_id = $this->search['top_depart_id'];
        }
        $builder->where('top_depart_id', $top_depart_id);
    }
}