config-manage/app/Repositories/ConfigProvinceRepository.php

<?php

namespace App\Repositories;

use App\Models\ConfigProvince;

class ConfigProvinceRepository {
    public function __construct(ConfigProvince $configProvince) {
        $this->configProvince = $configProvince;
    }
    //省市区列表
    public function index($request)
    {
        $where = [];
        if(isset($request['id'])){
            $where[] = ['bjcity_id', '=', $request['bjcity_id']];
        }

        return $this->configProvince->where($where)->orderBy('bjcity_id', 'asc')->paginate(20);
    }
}