我试图使用gem active_model_serializers将模型的序列化版本作为参数发送到视图
#app/serializers/admin_serializer.rb
class AdminSerializer < ActiveModel::Serializer
attributes :id,:email,:access_locked?
end
#app/controllers/dashboard/admins_controller.rb
def index
@search = Admin.search(params[:q])
@admins = @search.result(:distinct => true).page(params[:page]).per(10)
@page_entries_info = view_context.page_entries_info @admins
# render json: @admins
respond_to do |format|
format.html
format.js
format.json {render json: @admins}
end
end
#app/views/dashboard/admins/index.html.erb
<%= debug (ActiveModel::Serializer::Adapter.adapter_class(:json_api).new(ActiveModel::Serializer.serializer_for(@admins.first).new(@admins.first),{}).to_json) %>
<%= debug (@admins.all.map{|admin| AdminSerializer.new(admin).to_json}) %>
以上调试产生以下响应：
--- '{"data":{"id":"1","type":"admins","attributes":{"email":"tech@bluesapling.com","access_locked?":false}}}' //returned by the first debug
---
- '{"object":{"id":36,"email":"aubrey_schmitt@feeneykoch.io","created_at":"2016-03-28T05:15:17.546Z","updated_at":"2016-03-28T05:15:17.546Z"},"instance_options":{},"root":null,"scope":null}'
- '{"object":{"id":20,"email":"alysa_johnston@thompson.io","created_at":"2016-03-28T05:15:16.304Z","updated_at":"2016-03-28T05:15:16.304Z"},"scope":null}'
- '{"object":{"id":22,"email":"kristofer.langosh@kunzeluettgen.com","created_at":"2016-03-28T05:15:16.459Z","updated_at":"2016-03-28T05:15:16.459Z"},"scope":null}'
- '{"object":{"id":37,"email":"beryl_keler@wiza.biz","created_at":"2016-03-28T05:15:17.624Z","updated_at":"2016-03-28T05:15:17.624Z"},"scope":null}'
- '{"object":{"id":5,"email":"wilhelmine_buckridge@crona.io","created_at":"2016-03-28T05:15:15.139Z","updated_at":"2016-03-28T05:15:15.139Z"},"scope":null}'
- '{"object":{"id":14,"email":"edward_wisoky@corkery.net","created_at":"2016-03-28T05:15:15.838Z","updated_at":"2016-03-28T05:15:15.838Z"},"scope":null}'
- '{"object":{"id":27,"email":"leonor@jerde.biz","created_at":"2016-03-28T05:15:16.848Z","updated_at":"2016-03-28T05:15:16.848Z"},"scope":null}'
- '{"object":{"id":2,"email":"carley@wyman.net","created_at":"2016-03-28T05:15:14.873Z","updated_at":"2016-03-28T05:15:14.873Z"},"scope":null}'
- '{"object":{"id":10,"email":"ervin.gleichner@cremin.org","created_at":"2016-03-28T05:15:15.527Z","updated_at":"2016-03-28T05:15:15.527Z"},"scope":null}'
- '{"object":{"id":15,"email":"lonzo.dickens@johnscole.name","created_at":"2016-03-28T05:15:15.916Z","updated_at":"2016-03-28T05:15:15.916Z"},"scope":null}'
在第一个调试中,我只序列化一个对象,而在第二个调试中,我正在尝试为一个对象数组执行此操作.
第一个调试正确地返回对象的序列化版本(以json_api格式),而第二个调试则没有.
尝试使用ArraySerializer,但没有成功：ActiveModel :: Serializer :: ArraySerializer.new(@admins,each_serializer：AdminSerializer).as_json
如何实现所需的序列化.而且,如果实现了,我可以使用其他一些简化版吗？因为这个调试语句太冗长了.
尝试了这里提到的所有解决方案 – How do you initialize an ActiveModel::Serializer class with an ActiveRecord::Relation array?
我试图解决的基本问题是,在Admin控制器的索引方法中,Admin对象作为PORO传递给index.html文件.但我想要这个对象的序列化json版本,以便我可以将它作为prop传递给我的react组件
index方法在http://dashboard.localhost.com:3000/admins.json发射时渲染正确的json
索引方法更新#1
def index
@search = Admin.search(params[:q])
@admins_array = @search.result(:distinct => true).to_a
if params[:page]
@admins = @search.result(:distinct => true).page(params[:page][:number]).per(10)
@admins_json_array = Kaminari.paginate_array(@admins_array).page(params[:page][:number]).per(10)
else
@admins = @search.result(:distinct => true).page(1).per(10)
@admins_json_array = Kaminari.paginate_array(@admins_array).page(1).per(10)
end
@admins_json = ActiveModel::SerializableResource.new(@admins_json_array.to_a)
...
...
...
end
解决方法
由于需要默认序列化程序的不同属性,我需要指定序列化程序的控制器.
在控制器中：
def index
search = User.ransack(search_params)
render json: search.result,each_serializer: MembershipRenewalSerializer::MemberSerializer
end
所以,只是为了让事情有效,如果指定each_serializer选项会发生什么？
编辑：
外部控制器：
ActiveModel::SerializableResource.new( User.first(2),each_serializer: MembershipRenewalSerializer::MemberSerializer ).to_json
注意,如果没有指定each_serializer,SerializableResource将使用UserSerializer.
编辑#2,
看起来@admins数据发生了一些奇怪的事情.
尝试转换为数组：
ActiveModel::SerializableResource.new(@admins.to_a).to_json
编辑#3
要对数组进行分页,请尝试以下操作：
@search = Admin.search(params[:q]) @results = @search.result(:distinct => true).to_a @admins = Kaminari.paginate_array(@results).page(params[:page]).per(10)