feat: add custom history translation support

README.md

@@ -180,7 +180,7 @@ Example meta
 
 ### Custom history
 
-Besides the built in `created/updating/deleting/restoring` events, you may store custom history record with `ModelChanged` event.
+Besides the built in `created/updating/deleting/restoring` events, you may track custom history record by firing an `ModelChanged` event.
 
 ```php
 use Panoscape\History\Events\ModelChanged;
@@ -190,7 +190,7 @@ use Panoscape\History\Events\ModelChanged;
 event(new ModelChanged($user, 'User roles updated', $user->roles()->pluck('id')->toArray()));
 ```
 
-The `ModelChanged` constructor accepts two/three arguments. The first is the associated model instance; the second is the message; the third is optional, which is the meta(array);
+The `ModelChanged` constructor accepts two/three/four arguments. The first is the associated model instance; the second is the message; the third is optional, which is the meta(array); the fourth is also optional, being the translation key of the event(see [Localization](#localization)).
 
 ### Localization
 
@@ -234,6 +234,22 @@ This will translate your model history into
 创建项目project_001
 ```
 
+You can also translate custom history messages from `ModelChanged` events
+
+```php
+/*
+|--------------------------------------------------------------------------
+| Tracker Language Lines
+|--------------------------------------------------------------------------
+*/
+'switched_role' => ':model switched role',
+```
+
+```php
+// if you specified the translation key, the message argument will be ignored, simply just pass `null`
+event(new ModelChanged($user, null, $user->roles()->pluck('id')->toArray()), 'switched_role');
+```
+
 ### Filters
 
 You may set whitelist and blacklist in config file. Please follow the description guide in the published config file.

src/Events/ModelChanged.php

@@ -15,19 +15,23 @@ class ModelChanged
 
     public $meta;
 
+    public $trans;
+
     /**
      * Create a new event instance.
      *
      * @param  Model  $model
      * @param  string  $message
      * @param  array  $meta
+     * @param  string  $trans
      * 
      * @return void
      */
-    public function __construct($model, $message, $meta = null)
+    public function __construct($model, $message, $meta = null, $trans = null)
     {
         $this->model = $model;
         $this->message = $message;
         $this->meta = $meta;
+        $this->trans = $trans;
     }
 }

src/Listeners/HistoryEventSubscriber.php

@@ -18,8 +18,9 @@ public function onModelChanged($event)
     {
         if(!HistoryObserver::filter(null)) return;
 
+        $message = $event->trans == null? $event->message : trans('panoscape::history.'.$event->trans, ['model' => static::getModelName($model), 'label' => $model->getModelLabel()]),
         $event->model->morphMany(History::class, 'model')->create([
-            'message' => $event->message,
+            'message' => $message,
             'meta' => $event->meta,
             'user_id' => HistoryObserver::getUserID(),
             'user_type' => HistoryObserver::getUserType(),