如何在表单中包括Rails联接表字段？

Question

在这种情况下，我可以将值插入Member表和Club表。但是，有一个叫场:task中memberships，我要提交一个值表，并在成员表中member_id，并club_id会被Rails自动插入。如何task在下面的表格中包含该字段？先感谢您。

查看/表格：

<%= form_for @member ,:url=>{:action =>"create"} do |f| %>
  <%= f.text_field :email %>
  <%= f.fields_for :clubs do |s| %>
    <%= s.text_field :name %>
  <% end %>
  <%= f.submit "submit" %>
<% end %>

楷模

class Member < ActiveRecord::Base
  has_many :clubs ,:through=> :memberships
  has_many :memberships
  accepts_nested_attributes_for :clubs 
  attr_accessible :clubs_attributes
end

class Club < ActiveRecord::Base
  has_many :members ,:through=>:memberships
  has_many :memberships
end

class Memberships < ActiveRecord::Base
  belongs_to :Member
  belongs_to :Club
end

Answer 1

<%= f.fields_for :memberships do |m| %>
  <%= m.text_field :task %>
  <%= m.fields_for :clubs do |s| %>
    <%= s.text_field :name %>
  <% end %>
<% end %>