如何在邮件通知 Laravel 上添加条件？

Question

我使用 Laravel 5.3

我的通知 laravel 是这样的：

<?php
namespace App\Notifications;
use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Notifications\Messages\MailMessage;
use Illuminate\Notifications\Notification;
use Illuminate\Contracts\Broadcasting\ShouldBroadcast;
use Illuminate\Notifications\Messages\BroadcastMessage; 
class GuestRegistered extends Notification implements ShouldBroadcast, ShouldQueue
{
    use Queueable;
    private $data;
    public function __construct($data)
    {
        $this->data = $data;
    }
    public function via($notifiable)
    {
        return ['mail'];
    }
    public function toMail($notifiable)
    {
        return (new MailMessage)
                    ->subject('test')
                    ->greeting('Hi')
                    ->line('Thanks')
                    ->line('Your password : '.$this->data)
                    ->action('Start Shopping', url('/'));
    }
}

我想在 toMail 方法中添加条件

所以如果$this->data不存在->line('Your password : '.$this->data)则不显示或不执行

我该怎么做？

Answer 1

$data在构造函数中为参数添加默认值。

public function __construct($data = null)
{
    $this->data = $data;
}

然后您可以将 的实例存储MailMessage在一个变量中并使用该if语句添加line()您想要的。

public function __construct($data = null)
{
    $this->data = $data;
}