Laravel Eloquent Pluck 生成了错误的数据

Question

尝试使用 pluck 获取创建日期。

        $campaigns_dates = CampaignHistory::where('status', "Complete")->orderBy( 'created_at', 'ASC' )->pluck('created_at');
        $campaigns_dates = json_decode( $campaigns_dates );
        return $campaigns_dates;

//得到这个

["2020-06-29T14:19:03.000000Z","2020-06-29T14:19:42.000000Z","2020-07-29T14:23:54.000000Z","2020-08-28T14:55:53.000000Z","2020-08-29T14:17:40.000000Z","2020-09-29T14:18:27.000000Z","2020-09-29T14:21:13.000000Z"]

//但是想要这个

Example: ["2020-06-29 14:19:03","2020-06-29 14:19:42"]

Answer 1

您可以使用 map 操作将日期重新格式化为给定格式:

public function index() {
 
    $campaigns_dates = CampaignHistory::orderBy('created_at', 'ASC')
        ->pluck('created_at')
        ->map
        ->format('Y-m-d H:i:s');

    $campaigns_dates = json_decode($campaigns_dates);
    return $campaigns_dates;
}

替代解决方案:有一个使用 selectRaw() 方法的替代解决方案，感谢 @OMR提供此解决方案:

public function index() {
 
    $campaigns_dates = CampaignHistory::orderBy('created_at', 'ASC')
        ->selectRaw("DATE_FORMAT(created_at, '%Y-%m-%d %H:%i:%s') as formatted_date")
        ->pluck('formatted_date');

    $campaigns_dates = json_decode($campaigns_dates);
    return $campaigns_dates;
}