Added activity history to to all entities. Fixes #12

app/Entity.php

@@ -34,4 +34,25 @@ class Entity extends Model
     {
         return [get_class($this), $this->id] === [get_class($entity), $entity->id];
     }
+
+    /**
+     * Gets the activity for this entity.
+     * @return \Illuminate\Database\Eloquent\Relations\MorphMany
+     */
+    public function activity()
+    {
+        return $this->morphMany('Oxbow\Activity', 'entity')->orderBy('created_at', 'desc');
+    }
+
+    /**
+     * Gets only the most recent activity
+     * @param int $limit
+     * @param int $page
+     * @return mixed
+     */
+    public function recentActivity($limit = 20, $page=0)
+    {
+        return $this->activity()->skip($limit*$page)->take($limit)->get();
+    }
+
 }