rails将关系模型包含到模型中

将以下gem添加到gemfile中

gem 'active_model_serializers'

然后使用bundle安装

bundle install

您可以生成序列化程序,如下所示

rails g serializer something
rails g serializer user

它将在

# app/serializers/something_serializer.rb

    class SomethingSerializer < ActiveModel::Serializer
       attributes :id, 

       has_many :users 
    end

# app/serializers/user_serializer.rb
   class UserSerializer < ActiveModel::Serializer
       attributes :id, :name
    end 

控制器内

def index
  @something = Something.includes(:users).all


  render json: @something
end