问在序列化程序中将表的字段添加到父表中

EN

class PostSerializer < ActiveModel::Serializer
    attributes :id, :content, :like, :created_at, :updated_at
attributes :user
has_many :comments
def user
    object.user
end
end

class CommentSerializer < ActiveModel::Serializer
    attributes :id, :comment, :created_at, :updated_at
attributes :user
attributes :post
belongs_to :user
belongs_to :post
def user
  object.user
end
def post
  object.post
end
end