merging

app/controllers/v1/users/bookmarks_controller.rb

@@ -33,7 +33,7 @@ class V1::Users::BookmarksController < ApplicationController
   end
 
   def set_user
-    @user = User.find(params[:id])
+    @user = User.find(params[:user_id])
   end
 
   def find_object

app/serializers/follow_serializer.rb

 class FollowSerializer < ActiveModel::Serializer
   cache key: 'follow', expires_in: 24.hours
-  attributes :id, :user_id, :followable
+
+  def follower
+    object.user
+  end
+
+  attributes :id, :follower, :followable
 end

config/routes.rb

@@ -91,8 +91,8 @@ Rails.application.routes.draw do
     resources :feed, only: [:index]
 
     resources :users, concerns: [:followable, :deletable, :publisher, :versionable] do
+    resources :bookmarks, module: 'users', only: [:index, :create, :destroy]
       member do
-        resources :bookmarks, module: 'users', only: [:index, :create, :destroy]
         get 'following/:object_type', to: 'users#following'
         get 'followers', to: 'users#followers'
         get 'activities', to: 'activities#user_activities'