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86 lines
2.2 KiB
86 lines
2.2 KiB
<?php
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/**
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* 前端自定义的导出类
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*/
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namespace App\Exports;
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use App\Exceptions\ErrorException;
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use Illuminate\Support\Collection;
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use Maatwebsite\Excel\Concerns\FromCollection;
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class BaseFormExport implements FromCollection
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{
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public $fields;
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public $data;
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public function __construct($data, $exportFields)
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{
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// 需要导出的字段。格式：['name'=>'名字','user.sex'=>'性别']
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$this->fields = $exportFields;
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// 数据
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$this->data = $data;
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}
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/**
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* 数组转集合
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* @throws ErrorException
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*/
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public function collection()
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{
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if (empty($this->fields)) {
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throw new ErrorException('导出字段不能为空');
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}
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if (!is_array($this->fields)) {
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throw new ErrorException('导出字段必须是数组');
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}
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// 获取表头
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$header = array_values($this->fields);
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// 获取字段指向
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$fields = array_keys($this->fields);
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$newList = [];
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foreach ($this->data as $info) {
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$temp = [];
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foreach ($fields as $field) {
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if ($field == 'idcard') {
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$temp[$field] = ' ' . $this->getDotValue($info, $field);
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} else {
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$temp[$field] = $this->getDotValue($info, $field);
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}
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}
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$newList[] = $temp;
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}
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array_unshift($newList, $header); //插入表头
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return new Collection($newList);
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}
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/**
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* .号转数组层级并返回对应的值
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* @param $key
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* @param null $default
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* @return mixed|null
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*/
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function getDotValue($config, $key, $default = null)
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{
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// 如果在第一层，就直接返回
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if (isset($config[$key])) {
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return $config[$key];
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}
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// 如果找不到，直接返回默认值
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if (false === strpos($key, '.')) {
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return $default;
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}
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// 临时数组
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$tempArr = explode('.', $key);
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foreach ($tempArr as $segment) {
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if (!is_array($config) || !array_key_exists($segment, $config)) {
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return $default;
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}
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$config = $config[$segment];
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}
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return $config;
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}
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}
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