ruby - active model serializer with virtual attribute - Rails 4 -

i making api ror, , need create object virtual attributes , associated object.

the problem serializer not kick in when return object virtual attribute.

here returned object foo_controller

{     :id=>280,      :virtual=>"y8st07ef7u"     :user_id=>280 } 

:virtual virtual attribute , user_id id of associated table - user.

my goal make this

{     :id=>280,     :virtual=>"y8st07ef7u",     :user=>{             :id=>280,             :name=>'foo'     } } 

---

foo_controller setting

class api::v1::fooscontroller < applicationcontroller     foos = foo.all     foos.each |foo|        foo.set_attribute('y8st07ef7u')     end     render json: foos.to_json(:methods => :virtual), status: 200  end 

foo_model setting

class foo < activerecord::base      belongs_to :user      attr_accessor:virtual      def set_attribute(path)         self.virtual = path     end end 

foo_serializer setting

class fooserializer < activemodel::serializer     attributes :id, :virtual     has_one :user end 

foo migration setting

class createfoos < activerecord::migration     def change         create_table :foo |t|              t.references :user          end     end end 

user model

class user < activerecord::base      has_many :foos end 

user serializer

class userserializer < activemodel::serializer     attributes :id, :name     belongs_to :foo end 

---

when replace "foo.to_json(:methods => :virtual)" in foo_controller "foos", serializer kicks in , user object inside returned json instead of user_id, :virtual not in json.

are there ways can object both virtual attributes , associated object using active model serializer.

thank in advance help!

i figured out. simple.

i had add ":virtual" attributes in foo_serializer , replace "foo.to_json(:methods =>:virtual)" "foos"