Notifications Modules

Broadcasting Notifications

Prerequisites

The broadcast notification channel sends notifications via WebSocket for real-time delivery. Before you can send notifications via broadcast, you need to install the broadcasting notification plugin:

composer require skie/broadcasting-notification

Load the plugin in your Application.php:

$this->addPlugin('Cake/BroadcastingNotification');

Configure your WebSocket server in config/broadcasting.php. The plugin supports Pusher-compatible WebSocket servers.

Formatting Broadcasting Notifications

If a notification supports being broadcast, you should define a toBroadcast() method on the notification class. This method will receive a $notifiable entity and should return a BroadcastMessage instance or array. The returned data will be sent to the WebSocket channel.

Using Array (Simple):

/**
 * Get the broadcast representation of the notification.
 *
 * @param \Cake\Datasource\EntityInterface|\Cake\Notification\AnonymousNotifiable $notifiable
 * @return array<string, mixed>
 */
public function toBroadcast(EntityInterface|AnonymousNotifiable $notifiable): array
{
    return [
        'title' => 'New Message',
        'message' => 'You have a new message',
        'type' => 'info',
    ];
}

Using BroadcastMessage (Fluent API):

use Cake\BroadcastingNotification\Message\BroadcastMessage;
use Cake\Notification\Message\Action;

/**
 * Get the broadcast representation of the notification.
 *
 * @param \Cake\Datasource\EntityInterface|\Cake\Notification\AnonymousNotifiable $notifiable
 * @return \Cake\BroadcastingNotification\Message\BroadcastMessage
 */
public function toBroadcast(EntityInterface|AnonymousNotifiable $notifiable): BroadcastMessage
{
    return BroadcastMessage::new()
        ->title('Order Shipped')
        ->message('Your order #' . $this->order->id . ' has been shipped')
        ->type('success')
        ->icon('truck')
        ->actionUrl(['controller' => 'Orders', 'action' => 'view', $this->order->id])
        ->addAction(
            Action::new('view')
                ->label('View Order')
                ->url(['controller' => 'Orders', 'action' => 'view', $this->order->id])
                ->type('primary')
        );
}

Broadcasting Options

You may customize the queue connection and queue name used for broadcasting notifications:

public function toBroadcast(EntityInterface|AnonymousNotifiable $notifiable): BroadcastMessage
{
    return BroadcastMessage::new()
        ->title('Important Alert')
        ->message('This is an important system alert')
        ->type('warning')
        ->onQueue('high-priority')
        ->onConnection('redis');
}

By default, notifications are broadcast to a private channel named after the notifiable entity (e.g., App.Model.Entity.User.123). You can customize the channel by defining a broadcastOn() method on your notification:

use Cake\Broadcasting\Channel\PrivateChannel;

/**
 * Get the channels the event should broadcast on.
 *
 * @return array
 */
public function broadcastOn(): array
{
    return [
        new PrivateChannel('user.' . $this->userId),
    ];
}

You can also customize the event name:

/**
 * Get the broadcast event name.
 *
 * @return string|null
 */
public function broadcastAs(): ?string
{
    return 'order.shipped';
}

Listening for Notifications

When using the NotificationUI plugin with broadcasting enabled, notifications are automatically received and displayed in real-time. The JavaScript client subscribes to the user's private channel and handles incoming notifications automatically.

For custom implementations, you can listen to broadcast events using Laravel Echo:

Echo.private(`App.Model.Entity.User.${userId}`)
    .listen('.App.Notification.OrderShipped', (notification) => {
        console.log('New notification:', notification);
        // Handle the notification in your UI
    });

The broadcast event contains all data returned from your toBroadcast() method, along with the notification id and type (class name).

Slack Notifications

Prerequisites

The slack notification channel sends notifications to Slack channels via incoming webhooks. Before you can send notifications via Slack, you need to install the Slack notification plugin:

composer require skie/notification-slack

Load the plugin in your Application.php:

$this->addPlugin('Cake/SlackNotification');

Configure your Slack webhook URL in your application configuration.

Formatting Slack Notifications

Slack notifications support two message formats: the modern Block Kit API and the legacy Attachments API. You should define a toSlack() method on your notification class that returns either a BlockKitMessage or SlackMessage instance.

Block Kit Messages (Recommended)

Block Kit is Slack's modern framework for building rich, interactive messages. Use BlockKitMessage for new implementations:

use Cake\SlackNotification\BlockKit\BlockKitMessage;

/**
 * Get the Slack representation of the notification.
 *
 * @param \Cake\Datasource\EntityInterface|\Cake\Notification\AnonymousNotifiable $notifiable
 * @return \Cake\SlackNotification\BlockKit\BlockKitMessage
 */
public function toSlack(EntityInterface|AnonymousNotifiable $notifiable): BlockKitMessage
{
    $url = \Cake\Routing\Router::url(
        ['controller' => 'Invoices', 'action' => 'view', $this->invoice->id],
        true
    );

    $message = new BlockKitMessage();

    return $message
        ->text('Invoice payment received')
        ->headerBlock('Invoice Paid')
        ->dividerBlock()
        ->sectionBlock(function ($section) {
            $section->markdown(sprintf(
                '*Invoice #%s* has been paid\n*Amount:* $%s',
                $this->invoice->number,
                number_format($this->invoice->amount, 2)
            ));
        })
        ->actionsBlock(function ($actions) use ($url) {
            $actions->button('View Invoice')
                ->url($url)
                ->primary();
        });
}

Legacy Attachments API

For simple messages or maintaining backward compatibility, use SlackMessage:

use Cake\SlackNotification\Message\SlackMessage;

/**
 * Get the Slack representation of the notification.
 *
 * @param \Cake\Datasource\EntityInterface|\Cake\Notification\AnonymousNotifiable $notifiable
 * @return \Cake\SlackNotification\Message\SlackMessage
 */
public function toSlack(EntityInterface|AnonymousNotifiable $notifiable): SlackMessage
{
    return SlackMessage::new()
        ->text('Invoice Paid: $' . $this->invoice->amount);
}

Slack Attachments

Slack attachments provide a way to add rich formatting and fields to your notifications. You can use attachments to display structured data:

use Cake\SlackNotification\Message\SlackMessage;

/**
 * Get the Slack representation of the notification.
 *
 * @param \Cake\Datasource\EntityInterface|\Cake\Notification\AnonymousNotifiable $notifiable
 * @return \Cake\SlackNotification\Message\SlackMessage
 */
public function toSlack(EntityInterface|AnonymousNotifiable $notifiable): SlackMessage
{
    return SlackMessage::new()
        ->text('Order Shipped')
        ->attachment([
            'color' => 'good',
            'title' => 'Order #' . $this->order->id,
            'text' => 'Your order has been shipped and is on its way',
            'fields' => [
                [
                    'title' => 'Order Number',
                    'value' => $this->order->number,
                    'short' => true,
                ],
                [
                    'title' => 'Tracking Number',
                    'value' => $this->order->tracking_number,
                    'short' => true,
                ],
                [
                    'title' => 'Estimated Delivery',
                    'value' => $this->order->estimated_delivery->format('Y-m-d'),
                    'short' => true,
                ],
            ],
            'footer' => 'Order Management System',
            'ts' => time(),
        ]);
}

You can customize the appearance with colors:

• good - Green (success)
• warning - Yellow (warning)
• danger - Red (error)
• Or any hex color code like #439FE0

Routing Slack Notifications

To route Slack notifications to the proper webhook URL or channel, define a routeNotificationForSlack() method on your notifiable entity:

<?php
namespace App\Model\Entity;

use Cake\Notification\Notification;
use Cake\ORM\Entity;

class User extends Entity
{
    /**
     * Route notifications for the Slack channel.
     *
     * @param \Cake\Notification\Notification $notification
     * @return string
     */
    public function routeNotificationForSlack(Notification $notification): string
    {
        return $this->slack_webhook_url;
    }
}

You can also return a channel name to override the default channel configured in the webhook:

public function routeNotificationForSlack(Notification $notification): string|array
{
    return [
        'webhook' => 'https://hooks.slack.com/services/YOUR/WEBHOOK/URL',
        'channel' => '#alerts',
    ];
}

SMS Notifications (Seven.io)

Prerequisites

Sending SMS notifications with CakePHP Notification Plugin is powered by Seven.io. Before you can send notifications via Seven, you need to install the skie/notification-seven package and configure your Seven.io API credentials.

Formatting SMS Notifications

If a notification supports being sent as an SMS, you should define a toSeven() method on the notification class. This method will receive a $notifiable entity and should return a Cake\Notification\Seven\Message\SevenMessage instance:

use Cake\Notification\Seven\Message\SevenMessage;

/**
 * Get the Seven / SMS representation of the notification.
 *
 * @param \Cake\Datasource\EntityInterface|\Cake\Notification\AnonymousNotifiable $notifiable
 * @return \Cake\Notification\Seven\Message\SevenMessage
 */
public function toSeven(EntityInterface|AnonymousNotifiable $notifiable): SevenMessage
{
    return SevenMessage::create('Your SMS message content');
}

Customizing the Sender

If you would like to customize the sender name or number, you may use the from() method on a SevenMessage instance:

use Cake\Notification\Seven\Message\SevenMessage;

/**
 * Get the Seven / SMS representation of the notification.
 */
public function toSeven(EntityInterface|AnonymousNotifiable $notifiable): SevenMessage
{
    return SevenMessage::create('Your SMS message content')
        ->from('YourApp');
}

Routing SMS Notifications

To route Seven notifications to the proper phone number, define a routeNotificationForSeven() method on your notifiable entity:

<?php
namespace App\Model\Entity;

use Cake\Notification\Notification;
use Cake\ORM\Entity;

class User extends Entity
{
    /**
     * Route notifications for the Seven channel.
     *
     * @param \Cake\Notification\Notification $notification
     * @return string
     */
    public function routeNotificationForSeven(Notification $notification): string
    {
        return $this->phone_number;
    }
}

Telegram Notifications

Prerequisites

Before sending Telegram notifications, you should install the Telegram notification channel and configure your Telegram Bot token.

Formatting Telegram Notifications

If a notification supports being sent to Telegram, you should define a toTelegram() method on the notification class. This method will receive a $notifiable entity and should return a Cake\Notification\Telegram\Message\TelegramMessage instance:

use Cake\Notification\Telegram\Enum\ParseMode;
use Cake\Notification\Telegram\Message\TelegramMessage;

/**
 * Get the Telegram representation of the notification.
 *
 * @param \Cake\Datasource\EntityInterface|\Cake\Notification\AnonymousNotifiable $notifiable
 * @return \Cake\Notification\Telegram\Message\TelegramMessage
 */
public function toTelegram(EntityInterface|AnonymousNotifiable $notifiable): TelegramMessage
{
    return TelegramMessage::create()
        ->content('*Invoice Paid*')
        ->line('Your invoice has been paid!')
        ->parseMode(ParseMode::Markdown);
}

Telegram Media

Telegram supports sending various types of media along with messages:

use Cake\Notification\Telegram\Message\TelegramFile;
use Cake\Notification\Telegram\Message\TelegramMessage;

public function toTelegram(EntityInterface|AnonymousNotifiable $notifiable): TelegramMessage|TelegramFile
{
    // Send a photo
    return TelegramFile::create('/path/to/image.jpg', TelegramFile::TYPE_PHOTO)
        ->caption('Invoice receipt');

    // Send a document
    return TelegramFile::create('/path/to/document.pdf', TelegramFile::TYPE_DOCUMENT)
        ->caption('Invoice PDF');
}

Routing Telegram Notifications

To route Telegram notifications to the proper chat, define a routeNotificationForTelegram() method on your notifiable entity:

<?php
namespace App\Model\Entity;

use Cake\Notification\Notification;
use Cake\ORM\Entity;

class User extends Entity
{
    /**
     * Route notifications for the Telegram channel.
     *
     * @param \Cake\Notification\Notification $notification
     * @return string
     */
    public function routeNotificationForTelegram(Notification $notification): string
    {
        return $this->telegram_chat_id;
    }
}

RocketChat Notifications

Prerequisites

Before sending RocketChat notifications, you should install the RocketChat notification channel and configure your webhook URL.

Formatting RocketChat Notifications

If a notification supports being sent to RocketChat, you should define a toRocketchat() method on the notification class. This method will receive a $notifiable entity and should return a Cake\Notification\RocketChat\Message\RocketChatMessage instance:

use Cake\Notification\RocketChat\Message\RocketChatAttachment;
use Cake\Notification\RocketChat\Message\RocketChatMessage;

/**
 * Get the RocketChat representation of the notification.
 *
 * @param \Cake\Datasource\EntityInterface|\Cake\Notification\AnonymousNotifiable $notifiable
 * @return \Cake\Notification\RocketChat\Message\RocketChatMessage
 */
public function toRocketchat(EntityInterface|AnonymousNotifiable $notifiable): RocketChatMessage
{
    return RocketChatMessage::create()
        ->text('Invoice Paid')
        ->emoji(':money_with_wings:')
        ->attachment(function (RocketChatAttachment $attachment) {
            $attachment->title('Invoice #1234')
                ->text('Your invoice has been paid')
                ->color('good')
                ->field('Amount', '$99.00', true)
                ->field('Date', date('Y-m-d'), true);
        });
}

Routing RocketChat Notifications

To route RocketChat notifications to the proper webhook, define a routeNotificationForRocketchat() method on your notifiable entity:

<?php
namespace App\Model\Entity;

use Cake\Notification\Notification;
use Cake\ORM\Entity;

class User extends Entity
{
    /**
     * Route notifications for the RocketChat channel.
     *
     * @param \Cake\Notification\Notification $notification
     * @return string
     */
    public function routeNotificationForRocketchat(Notification $notification): string
    {
        return $this->rocketchat_webhook_url;
    }
}

Webhook Notifications

Prerequisites

The webhook notification channel allows you to send notifications to arbitrary HTTP endpoints.

Formatting Webhook Notifications

If a notification supports being sent to a webhook, you should define a toWebhook() method on the notification class. This method will receive a $notifiable entity and should return a Cake\Notification\Webhook\Message\WebhookMessage instance:

use Cake\Notification\Webhook\Message\WebhookMessage;

/**
 * Get the webhook representation of the notification.
 *
 * @param \Cake\Datasource\EntityInterface|\Cake\Notification\AnonymousNotifiable $notifiable
 * @return \Cake\Notification\Webhook\Message\WebhookMessage
 */
public function toWebhook(EntityInterface|AnonymousNotifiable $notifiable): WebhookMessage
{
    return WebhookMessage::create([
        'event' => 'invoice.paid',
        'invoice_id' => $this->invoice->id,
        'amount' => $this->invoice->amount,
    ]);
}

You can also customize headers and other options:

public function toWebhook(EntityInterface|AnonymousNotifiable $notifiable): WebhookMessage
{
    return WebhookMessage::create([
        'event' => 'invoice.paid',
        'data' => $this->invoice->toArray(),
    ])
    ->header('X-Webhook-Secret', 'your-secret')
    ->verify(false); // Disable SSL verification
}

Routing Webhook Notifications

To route webhook notifications to the proper URL, define a routeNotificationForWebhook() method on your notifiable entity:

<?php
namespace App\Model\Entity;

use Cake\Notification\Notification;
use Cake\ORM\Entity;

class User extends Entity
{
    /**
     * Route notifications for the Webhook channel.
     *
     * @param \Cake\Notification\Notification $notification
     * @return string
     */
    public function routeNotificationForWebhook(Notification $notification): string
    {
        return $this->webhook_url;
    }
}