Question

请允许我说,我有两种模型<代码>Event和Person。

许多人参加了一次活动,一个人也可以参加许多活动。

class Event < ActiveRecord::Base
  has_and_belongs_to_many :people
end

class Person < ActiveRecord::Base
  has_and_belongs_to_many :events
end

create_table "events_people", :id => false, :force => true do |t|
  t.integer "event_id"
  t.integer "person_id"
end

The problem is that an event is presented by one or many speakers. So for a particular event, we should have people who attend that event and one or many speakers who are, of course, people too.

我如何这样做? 谢谢。

Answer 1

为此:

class Event < ActiveRecord::Base
  has_and_belongs_to_many :people
  has_and_belongs_to_many :speakers, :class_name => "Person"
end

您将有一个<代码>events_speakers加入的表格,该表格将与event_id和 person_id相匹配。 (请在<条码>人民表中注明。)

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