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

<?php


namespace App\Admin\Extensions\Exporter;


use App\Models\LoanStudentsList;
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 ImportLoanExporter extends AbstractExporter implements WithMapping, WithHeadings, FromCollection
{
    use Exportable;
    protected $fileName = '已导入贷款名单';
    protected $titles = [];

    public function __construct()
    {
        $this->fileName = $this->fileName.'_'.time().'.xlsx';//拼接下载文件名称
        $this->titles = [
            'sfzh'=>'身份证',
            'xh'=>'学号',
            'xm'=>'姓名',
            'annual_session'=>'年份',
            'fylx'=>'费用类型',
            'total'=>'贷款总额',
            'xfje'=>'抵扣学费金额',
            'zsje'=>'抵扣住宿费金额',
            'is_push'=>'是否已推送',
            'is_five_year'=>'是否为五年制一贯制',
            "create_time" => "导入时间",
        ];
        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());
    }

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

    public function map($row): array
    {

        $fylx = "贷款计划";
        if($row['fylx'] == LoanStudentsList::FYLX_DZ) $fylx = "贷款到账";

        $is_push = "未推送";
        if($row['is_push'] == LoanStudentsList::IS_PUSH_YES) $is_push = "已推送";

        $is_five_year = "否";
        if($row['is_five_year'] == LoanStudentsList::IS_FIVE_YEAR_YES) $is_five_year = "是";

        // TODO: Implement map() method.
        return [
            "'".$row['sfzh'].'',
            $row["xh"],
            $row["xm"],
            $row["annual_session"],
            $fylx,
            $row["total"],
            $row["xfje"],
            $row["zsje"],
            $is_push,
            $is_five_year,
            date("Y-m-d H:i:s", $row['create_time']),
        ];
    }

}