Add support for returning soft-deleted causer models.

config/activitylog.php

@@ -30,6 +30,11 @@
      */
     'subject_returns_soft_deleted_models' => false,
 
+    /*
+     * If set to true, the causer returns soft deleted models.
+     */
+    'causer_returns_soft_deleted_models' => false,
+
     /*
      * This model will be used to log activity.
      * It should implement the Spatie\Activitylog\Contracts\Activity interface

docs/installation-and-setup.md

@@ -65,6 +65,11 @@ return [
      * If set to true, the subject returns soft deleted models.
      */
     'subject_returns_soft_deleted_models' => false,
+
+    /*
+     * If set to true, the causer returns soft deleted models.
+     */
+    'causer_returns_soft_deleted_models' => false,
 
     /*
      * This model will be used to log activity.

src/Models/Activity.php

@@ -76,6 +76,10 @@ public function subject(): MorphTo
      */
     public function causer(): MorphTo
     {
+        if (config('activitylog.causer_returns_soft_deleted_models')) {
+            return $this->morphTo()->withTrashed();
+        }
+
         return $this->morphTo();
     }