Laravel 9 发送电子邮件通知错误“电子邮件必须具有“收件人”、“抄送”或“密件抄送”标头。”

Question

我正在尝试向一组用户发送通知。 根据 Laravel 文档，我应该能够发送通知，如下所示：

Notification::send($users, new ConsumableNotification($arguments));

只要

$users

是可通知对象的集合或数组。 但是我面临这个错误：

   Symfony\Component\Mime\Exception\LogicException 

  An email must have a "To", "Cc", or "Bcc" header.

我尝试向个人用户发送通知如下

foreach ($users as $user) {
    $user->notify(new ConsumableNotification($arguments));
}

出现同样的错误。但是明确发送邮件：

foreach ($users as $user) {
    Mail::to($user)
        ->send(new ConsumableAlert($arguments));
}

有效，所以我认为通知类中出了问题。 通知类定义如下：

class ConsumableNotification extends Notification
{
    use Queueable;

    /**
     * Create a new notification instance.
     *
     * @return void
     */
    public function __construct(
        public ConsumableTypes $consumableType,
        public float|null $remains = null,
        public Carbon|null $expires = null,
    )
    {
        //
    }

    /**
     * Get the notification's delivery channels.
     *
     * @param  mixed  $notifiable
     * @return array
     */
    public function via($notifiable)
    {
        return ['mail', 'database'];
    }

    /**
     * Get the mail representation of the notification.
     *
     * @param  mixed  $notifiable
     * @return \Illuminate\Notifications\Messages\MailMessage
     */
    public function toMail($notifiable)
    {
        return (new ConsumableAlert(
            $this->consumableType,
            $this->remains,
            $this->expires
        ));
    }

    /**
     * Get the array representation of the notification.
     *
     * @param  mixed  $notifiable
     * @return array
     */
    public function toArray($notifiable)
    {
        return [
            'consumable_type_id' => $this->consumableType->id,
            'remains' => $this->remains,
            'expires' => $this->expires
        ];
    }
}

有人发现问题了吗？

Answer 1

花了很多时间后，我发现需要在通知类中添加

to

方法，如下所示：

/**
 * Get the mail representation of the notification.
 *
 * @param  mixed  $notifiable
 * @return \Illuminate\Mail\Mailable
 */
public function toMail($notifiable)
{
    return (new MyMailable($arguments))
        ->to($notifiable->email);
}

不知何故，我在阅读文档时错过了 5 次。