update code

app/Events/ActionCalled.php

@@ -0,0 +1,57 @@
+<?php
+
+namespace App\Events;
+
+use Illuminate\Broadcasting\Channel;
+use Illuminate\Broadcasting\InteractsWithSockets;
+use Illuminate\Broadcasting\PresenceChannel;
+use Illuminate\Broadcasting\PrivateChannel;
+use Illuminate\Contracts\Broadcasting\ShouldBroadcast;
+use Illuminate\Foundation\Events\Dispatchable;
+use Illuminate\Queue\SerializesModels;
+use App\Entities\Document;
+use App\Entities\User;
+
+class ActionCalled
+{
+    use Dispatchable, InteractsWithSockets, SerializesModels;
+
+    public $model;
+    public $action;
+    public $paramIds;
+
+    /**
+     * Create a new event instance.
+     *
+     * @return void
+     */
+    public function __construct($model, string $action, $params = [])
+    {
+        $this->model = $model;
+        $this->action = $action;
+        $this->paramIds = collect($params);
+        $this->paramIds->shift();
+
+        $this->eventsRegister();
+    }
+
+    protected function eventsRegister()
+    {
+        if($this->action == 'attach'){
+            if(!$this->paramIds->count()){
+                return;
+            }
+            event(new UsersReceivedDocument($this->model, User::find($this->paramIds)));
+        }
+    }
+
+    /**
+     * Get the channels the event should broadcast on.
+     *
+     * @return \Illuminate\Broadcasting\Channel|array
+     */
+    public function broadcastOn()
+    {
+        return new PrivateChannel('channel-name');
+    }
+}

app/Events/UserViewedDocument.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace App\Events;
+
+use Illuminate\Broadcasting\Channel;
+use Illuminate\Broadcasting\InteractsWithSockets;
+use Illuminate\Broadcasting\PresenceChannel;
+use Illuminate\Broadcasting\PrivateChannel;
+use Illuminate\Contracts\Broadcasting\ShouldBroadcast;
+use Illuminate\Foundation\Events\Dispatchable;
+use Illuminate\Queue\SerializesModels;
+use App\Entities\Document;
+
+class UserViewedDocument
+{
+    use Dispatchable, InteractsWithSockets, SerializesModels;
+
+    public $document;
+
+    /**
+     * Create a new event instance.
+     *
+     * @return void
+     */
+    public function __construct(Document $document)
+    {
+        $this->document = $document;
+    }
+
+    /**
+     * Get the channels the event should broadcast on.
+     *
+     * @return \Illuminate\Broadcasting\Channel|array
+     */
+    public function broadcastOn()
+    {
+        return new PrivateChannel('channel-name');
+    }
+}

app/Events/UsersReceivedDocument.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace App\Events;
+
+use Illuminate\Broadcasting\Channel;
+use Illuminate\Broadcasting\InteractsWithSockets;
+use Illuminate\Broadcasting\PresenceChannel;
+use Illuminate\Broadcasting\PrivateChannel;
+use Illuminate\Contracts\Broadcasting\ShouldBroadcast;
+use Illuminate\Foundation\Events\Dispatchable;
+use Illuminate\Queue\SerializesModels;
+use App\Entities\Document;
+
+class UsersReceivedDocument
+{
+    use Dispatchable, InteractsWithSockets, SerializesModels;
+
+    public $document;
+    public $users;
+
+    /**
+     * Create a new event instance.
+     *
+     * @return void
+     */
+    public function __construct(Document $document, $users)
+    {
+        $this->document = $document;
+        $this->users = $users;
+    }
+
+    /**
+     * Get the channels the event should broadcast on.
+     *
+     * @return \Illuminate\Broadcasting\Channel|array
+     */
+    public function broadcastOn()
+    {
+        return new PrivateChannel('channel-name');
+    }
+}