如何从JBuilder视图委托给模型的to_builder方法? [英] How do I delegate to a model's to_builder method from a JBuilder view?

问题描述

假设我有一个Person类和一个Gang类

Let's say I have a Person class and a Gang class

class Person
  belongs_to :gang
  attr_accessible :name, :secret

  def to_builder
    Jbuilder.new do |app|
      person.id id
      person.name name
    end
  end
end

class Gang
  has_many :people
  attr_accessible :name
end

如何从视图中使用此to_builder方法?

How do I use this to_builder method from a view?

例如

#app/views/gang/show.json.jbuilder (@gang set by the controller)

json.gang do |json|
  json.name @gang.name
  json.gang_members(@gang.people) do |person|
     #how do I delegate to the person.to_builder here?
  end
end

请记住，我永远都不想只使用默认的Person.as_json，因为我不想在Person上呈现secret属性.

Mind you, I do not ever just want to use the default Person.as_json, because I do not want to render the secret attribute on Person.

我尝试过的大多数方法最终都渲染了Person.as_json的等效内容，而不是Person.to_builder.

Most of the things I have tried have ended up rendering the equivalent of Person.as_json, not Person.to_builder.

推荐答案

您可以使用Jbuilder#attributes!.我的意思是

You can use Jbuilder#attributes!. I mean

json.gang do |json|
  json.name @gang.name
  json.gang_members @gang.people.map { |person| person.to_builder.attributes! }
end

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