伤不起 的错误.登录后timeline 不见了

app/serializers/each_post_serializer.rb

@@ -8,13 +8,13 @@ class EachPostSerializer < ActiveModel::Serializer
   end
 
   def first_sharer
-    user = ShareInstance.where(sharable_id: object.id).first.try(:user)
+    user = ShareInstance.where(sharable_id: object.id).first.user
     user_info_json(user)
   end
 
   def last_sharer
     return nil if ShareInstance.where(sharable_id: object.id).count == 1
-    user = ShareInstance.where(sharable_id: object.id).last.try(:user)
+    user = ShareInstance.where(sharable_id: object.id).last.user
     user_info_json(user)
   end