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Class: Opscale\NotificationCenter\Notifications\SlackNotification
Channel identifier: slack
Underlying driver: Illuminate\Notifications\Slack\SlackChannel SlackNotification posts a structured Block Kit message to a Slack channel using Laravel’s built-in Slack notification channel.

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Method signatures

class SlackNotification extends Notification
{
    public function via(object $notifiable): array

    public function toSlack(object $notifiable): SlackMessage
}

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via()

Returns [SlackChannel::class], routing the notification through Illuminate\Notifications\Slack\SlackChannel.

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toSlack(object $notifiable): SlackMessage

Builds and returns a Illuminate\Notifications\Slack\SlackMessage composed of three Block Kit blocks:
BlockContent
Header block$delivery->notification->subject
Section block$delivery->notification->summary if set, otherwise $delivery->notification->subject
Actions blockA “View” button linking to the tracked open URL
The message’s top-level text field (used as the notification fallback in clients that do not render blocks) is also set to $delivery->notification->subject.

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What data it sends

The Slack message contains:
  • A fallback text equal to the notification subject
  • A header block with the notification subject
  • A section block with the notification summary (falls back to subject if summary is absent)
  • An actions block with a “View” button whose URL is the delivery’s tracked open URL

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Usage example

Add slack to a strategy’s channels array: 
// config/notification-center.php
'messages' => [
    'slack' => \Opscale\NotificationCenter\Notifications\SlackNotification::class,
    // ...
],

'strategies' => [
    'system' => [
        'queue'    => 'notifications-system',
        'channels' => ['slack', 'email'],
        // ...
    ],
],
The notifiable model must implement routeNotificationForSlack() returning either a Slack channel name or an incoming webhook URL: 
public function routeNotificationForSlack(): string
{
    return config('services.slack.webhook_url');
}
Laravel’s Slack channel requires the laravel/slack-notification-channel Composer package (included in Laravel 10+ applications). Ensure a valid Slack bot token or incoming webhook URL is configured.

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