如何在Laravel Excel中将zip字段设置为字符串？

Question

我正在使用Laravel Excel将地址列表管理到应用程序中，但出现以下问题：

当我导入联系人时，Laravel Excel将我的德语邮政编码投给了Date对象：

我得到这个结果：

[
  "salutation" => "Sehr geehrte Frau Alberg"
  "title" => "Frau"
  "firstname" => "Rita"
  "lastname" => "Alberg"
  "street" => "Str."
  "zip" => Carbon @-1615770000 {
    date: 1918-10-20 00:00:00.0 Europe/Berlin (+01:00)
  }
  "city" => "Coswig / Anhalt OT. Stackelitz"
  "country" => "Deutschland"
  "birthday" => Carbon @13561200 {
    date: 1970-06-07 00:00:00.0 Europe/Berlin (+01:00)
  }
]

我通过运行函数解决了这个问题，但是现在，zip字段被强制转换为float：

$path = $request->file('csv')->getRealPath();
$results = Excel::load($path, function($reader) {})
                ->setDateColumns(['birthday'])
                ->formatDates(true, 'Y-m-d')
                ->ignoreEmpty()
                ->get();

然后我得到了这个结果：

[
  "salutation" => "Sehr geehrte Frau Alberg"
  "title" => "Frau"
  "firstname" => "Rita"
  "lastname" => "Alberg"
  "street" => "Str."
  "zip" => 6868.0
  "city" => "Coswig / Anhalt OT. Stackelitz"
  "country" => "Deutschland"
  "birthday" => "1970-06-07"
]

csv文件中的原始zip值为：“ D-06846”