可序列化哈希中的carrierwave双键

Question

我有一个用户模型，它为名为 profile_img 的字段安装载波上传器。代码如下：

class User < ActiveRecord::Base
    mount_uploader :profile_img, ProfileUploader
end

profile_img 字段的输出是这样的：

"profile_img": {
            "url": "https://halo-img-dev.s3.amazonaws.com/uploads/user/profile_img/1000/cola_iOS2_512_dribbble2.png",
            "thumb": {
                "url": "https://halo-img-dev.s3.amazonaws.com/uploads/user/profile_img/1000/thumb_cola_iOS2_512_dribbble2.png"
            },
            "medium": {
                "url": "https://halo-img-dev.s3.amazonaws.com/uploads/user/profile_img/1000/medium_cola_iOS2_512_dribbble2.png"
            }
        }

当我尝试通过简单地调用 super 来自定义序列化哈希时，

def serializable_hash(options = {})
    super(options)
end

profile_image 字段键被复制

"profile_img": {
        "profile_img": {  #### duplicate here
            "url": "https://halo-img-dev.s3.amazonaws.com/uploads/user/profile_img/1000/cola_iOS2_512_dribbble2.png",
            "thumb": {
                "url": "https://halo-img-dev.s3.amazonaws.com/uploads/user/profile_img/1000/thumb_cola_iOS2_512_dribbble2.png"
            },
            "medium": {
                "url": "https://halo-img-dev.s3.amazonaws.com/uploads/user/profile_img/1000/medium_cola_iOS2_512_dribbble2.png"
            }
        }
    },

我怀疑这个问题源于载波序列化方法，但找不到解决方案。

有什么线索吗？

Answer 1

解决方案：

1. jBuilder

   json.profile_img @user.profile_img.serializable_hash
   

2. ActiveModelSerializer

   # attributes
   def profile_img
     object.profile_img.serializable_hash
   end