wx.sstbc.com/app/Exports/BaseExport.php

<?php

namespace App\Exports;

use App\Models\CustomForm;
use App\Models\CustomFormField;
use App\Models\ParameterDetail;
use Illuminate\Support\Collection;
use Maatwebsite\Excel\Concerns\FromCollection;

class BaseExport implements FromCollection
{
    public $fields;
    public $data;
    public $tableName;

    public function __construct($exportFields, $data, $tableName)
    {
        $this->fields = $exportFields;
        $this->data = $data;
        $this->tableName = $tableName;
    }

    //数组转集合
    public function collection()
    {
        return new Collection($this->createData());
    }

    //业务代码
    public function createData()
    {
        // 获取表字段备注
        $rowTableFieldByComment = (new CustomFormField)->getRowTableFieldsByComment($this->tableName);
        // 筛选需要导出的字段设置
        $exportFieldsByComment = [];
        foreach ($rowTableFieldByComment as $key => $value) {
            if (in_array($key, $this->fields)) {
                $exportFieldsByComment[$key] = $value;
            }
        }
        // 表头
        $header = array_values($exportFieldsByComment);
        $flip = array_flip($this->fields);
        $newList = [];
        foreach ($this->data as $info) {
            // 取原始查询数据中指定的几个字段数据
            $temp = array_intersect_key($info, $flip);
            $newList[] = $this->intToSting($temp);
        }
        array_unshift($newList, $header); //插入表头
        return $newList;
    }


    /**
     * 枚举型数据转换
     */
    public function intToSting($fields)
    {
        $model = CustomForm::tableToModel($this->tableName);
        //  模型中定义$intToString静态方法，实现枚举型的int转字符串
        $array = $model::$intToString;
        foreach ($fields as $key => &$item) {
            if (isset($array[$key])) {
                if (is_array($array[$key])) {
                    // 枚举
                    $item = $array[$key][$item];
                }
                if (is_int($array[$key])) {
                    // 数据字典
                    $item = ParameterDetail::where('id', $item)->value('value');
                }
            }
        }
        return $fields;
    }
}