在 Active Model Serializer 中自定义 has_many、belongs_to 嵌套关联 json

Question

我该怎么做

class UserSerializer < ApplicationSerializer
  attributes :id, :name. :email

  has_many :posts do                   # I don't want to use PostSerializer
    attributes :id, :title             # /posts/index would show more data
    has_many :comments do              # like created_at, updated_at, edits, other assocs..
      attributes: :id, :content
    end
  end

  belongs_to :category do              # I dont' want to user CategorySerializer
    attributes :id, :name              # /categories/index would show more data
  end                                  # like created_at, no. of users, associations, etc.,
end

Answer 1

你可以这样做，但使用serializers

class UserSerializer < ApplicationSerializer
  attributes :id, :name, :email, :user_posts

  def user_posts
    object.posts.map do |post|
      PostSerializer.new(post, only: [:id, :title])
    end
  end

end