新規Webhookの作成

リンクにアクセスしてWebHook URLを作成する

https://slack.com/services/new/incoming-webhook

• チャンネル名
  sample_app_slack_test

.env

#Slack
SLACK_CHANNEL='sample_app_slack_test'
SLACK_NAME='sample app Job Fail Alert'
SLACK_URL='https://hooks.slack.com/services/xxxxx/yyyyy/zzzzz'

SLACK_NAMEは任意で。

Slack用notificationクラスを作成

$ php artisan make:notification SlackNotification

App\Notifications\SlackNotification.php

namespace App\Notifications;

use Illuminate\Bus\Queueable;
use Illuminate\Notifications\Notification;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Notifications\Messages\MailMessage;

class SlackNotification extends Notification
{
    use Queueable;

    /**
     * Create a new notification instance.
     *
     * @return void
     */
    public function __construct()
    {
        //
    }

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

    /**
     * Get the mail representation of the notification.
     *
     * @param  mixed  $notifiable
     * @return \Illuminate\Notifications\Messages\MailMessage
     */
    public function toMail($notifiable)
    {
        return (new MailMessage)
                    ->line('The introduction to the notification.')
                    ->action('Notification Action', url('/'))
                    ->line('Thank you for using our application!');
    }

    /**
     * Get the array representation of the notification.
     *
     * @param  mixed  $notifiable
     * @return array
     */
    public function toArray($notifiable)
    {
        return [
            //
        ];
    }
}

書き換える

namespace App\Notifications;

use Illuminate\Bus\Queueable;
use Illuminate\Notifications\Notification;
use Illuminate\Notifications\Messages\SlackMessage;

class SlackNotification extends Notification
{
    use Queueable;

    protected $channel;
    protected $name;
    protected $message;

    /**
     * Create a new notification instance.
     *
     * @return void
     */
    public function __construct($message = null)
    {
        $this->channel = env('SLACK_CHANNEL');
        $this->name = env('SLACK_NAME');
        $this->message = $message;
    }

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

    /**
     * Slack通知組み立て
     *
     * @param  mixed  $notifiable
     * @return \Illuminate\Notifications\Messages\SlackMessage
     */
    public function toSlack($notifiable)
    {
        $message = (new SlackMessage)
            ->from($this->name)
            ->to($this->channel)
            ->content($this->message);

        return $message;
    }

    /**
     * Get the array representation of the notification.
     *
     * @param  mixed  $notifiable
     * @return array
     */
    public function toArray($notifiable)
    {
        return [
            //
        ];
    }
}

App\Http\Util\Slack\SlackFailAlert.php

namespace App\Util\Slack;

use Illuminate\Notifications\Notifiable;
use App\Notifications\SlackNotification;

class SlackFailAlert
{
    use Notifiable;

    public function send($message = null)
    {
        $this->notify(new SlackNotification($message));
    }

    protected function routeNotificationForSlack()
    {
        return env('SLACK_URL');
    }
}

利用したい箇所で

use App\Util\Slack\SlackFailAlert;

・・・

class Sample
{
・・・
    public function handle()
    {
    ・・・
            // Slackアラート通知
            $slack_fail_alert = new SlackFailAlert();
            $slack_fail_alert->send('失敗しました。');
    ・・・
    }
・・・
}