HNWelcomeSystemAdminDcat/app/Admin/Extensions/Exporter/ImportStudentExporter.php

<?php


namespace App\Admin\Extensions\Exporter;


use App\Models\CompletedOfflineStep;
use App\Models\Speciality;
use App\Models\UsersMember;
use Dcat\Admin\Grid\Exporters\AbstractExporter;
use Maatwebsite\Excel\Concerns\Exportable;
use Maatwebsite\Excel\Concerns\FromCollection;
use Maatwebsite\Excel\Concerns\WithHeadings;
use Maatwebsite\Excel\Concerns\WithMapping;

class ImportStudentExporter extends AbstractExporter implements WithMapping, WithHeadings, FromCollection
{
    use Exportable;
    protected $fileName = '导入学生名单';
    protected $titles = [];

    public function __construct()
    {
        $this->fileName = $this->fileName.'_'.time().'.xlsx';//拼接下载文件名称
        $this->titles = [
            'mobile' => '手机号' ,
            'name'=>'姓名',
            'idCard'=>'身份证',
            'sex' => "性别",
            "admission_code" => "录取编码",
            "admission_college" => "二级学院",
            "admitted_major" => "录取专业",
            "resuming_school" => "复学类型",
            "annual_session" => "年份",
            "create_time" => "导入时间",
            "zhaoshengban" => "招生办报到",
            "erjixueyuan" => "二级学院报到",
            "suguan" => "宿管办报到",
            "is_test" => "测试账号"
        ];
        parent::__construct();
    }

    public function export()
    {
        // TODO: Implement export() method.
        $this->download($this->fileName)->prepare(request())->send();
        exit;
    }

    public function collection()
    {
        // TODO: Implement collection() method.

//        return collect($this->buildData());
        $chunk_list = array_chunk($this->buildData(), 1000);
        $newList = [];

        $userList = UsersMember::query()->get()->toArray();
        $userList = array_column($userList, null, "idcard");

        foreach($chunk_list as $value){
            foreach ($value as $item){
                $resuming_school = "普通学生";
                if($item["resuming_school"] == 1) $resuming_school = "退伍复学";
                if($item["resuming_school"] == 2) $resuming_school = "普通复学";
                $is_test = "否";
                if($item["is_test"] == 2) $is_test = "是";

                $zhaoshengban = "否";
                $erjixueyuan = "否";
                $suguan = "否";

                if(array_key_exists($item["idCard"], $userList)){
                    $step = CompletedOfflineStep::query()->where("unique_number", $userList[$item["idCard"]]["unique_number"])->get()->toArray();
                    if(!empty($step)){
                        $step = array_column($step, null, "step_id");
                        if(array_key_exists(2, $step)) $zhaoshengban = "是";
                        if(array_key_exists(3, $step)) $erjixueyuan = "是";
                        if(array_key_exists(4, $step)) $suguan = "是";
                    }
                }

                $arr = [
                    "sex" => $item['sex'] == 1 ? "男" : "女",
                    "resuming_school" => $resuming_school,
                    "is_test" => $is_test,
                    "zhaoshengban" => $zhaoshengban,
                    "erjixueyuan" => $erjixueyuan,
                    "suguan" => $suguan,
                    "mobile" => $item["mobile"],
                    "name" => $item["name"],
                    "idCard" => $item["idCard"],
                    "admission_code" => $item["admission_code"],
                    "admission_college" => $item["admission_college"],
                    "admitted_major" => $item["admitted_major"],
                    "annual_session" => $item["annual_session"],
                    "create_time" => date("Y-m-d H:i:s", $item['create_time']),
                ];
                array_push($newList, $arr);
            }
        }

        return collect($newList);
    }

    public function headings(): array
    {
        // TODO: Implement headings() method.
        return $this->titles();
    }

    public function map($row): array
    {

        // TODO: Implement map() method.
        return [
            $row['mobile'],
            $row['name'],
            "'".$row['idCard'].'',
            $row['sex'],
            $row['admission_code'],
            $row['admission_college'],
            $row['admitted_major'],
            $row['resuming_school'],
            $row['annual_session'],
            $row['create_time'],
            $row["zhaoshengban"],
            $row["erjixueyuan"],
            $row["suguan"],
            $row["is_test"],
        ];
    }

    public function getSpecialityAndCollegeNameById($id)
    {
        $nameInfo = Speciality::query()->where("speciality.id", $id)->leftJoin("secondary_college as b", "speciality.secondary_college_id", "=", "b.id")->first();

        if(empty($nameInfo)){
            return [
                "name" => "",
                "speciality_name" => ""
            ];
        }

       return $nameInfo->toArray();
    }

}