Ruby on rails 3.1 Rails 3.1-从其他控制器绑定HABTM

我有：

但是我怎样才能把这个人和这个控制器的电话绑定在一起呢

我的意思是在people\u phones表中创建一个记录（如果它不存在）

创造

Blog.build – not possible
user.blogs.build(…), user.save – both are required to save to DB

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谢谢。我从未见过这个“

class Request < ActiveRecord::Base
  belongs_to :person
  belongs_to :phone
end

@phone = Phone.find_or_create_by_phone_number(params[:phone][:phone_number])

User.find(person_id).phones << @phone

request.person.phones << request.phone

Blog.new(…).save
user.blogs << Blog.new(…)
user.blogs.new(…).save – do not use, no practical use case

Blog.build – not possible
user.blogs.build(…), user.save – both are required to save to DB

Blog.create(…)
user.blogs.create(…)