我正在尝试手动构建表单字段以进行测试。我有以下型号：
class Bedroom < ActiveRecord::Base
has_many :booked_bedrooms
has_many :bookings, :through => :booked_bedrooms
end
class Booking < ActiveRecord::Base
has_many :booked_bedrooms
has_many :bedrooms, :through => :booked_bedrooms
accepts_nested_attributes_for :booked_bedrooms
end
class BookedBedroom < ActiveRecord::Base
belongs_to :booking
belongs_to :bedroom
# fields: bedroom_id, :booking_id
end
当我在控制台中尝试以下操作时，预订和关联的预定卧室将被保存：
>> b = Booking.new({ :booked_bedrooms_attributes => { 0 => { :bedroom_id => 1 } } })
=> #<Booking id: nil, start_date: nil, end_date: nil, created_at: nil, updated_at: nil>
>> b.save
=> true
>> b.booked_bedrooms
=> [#<BookedBedroom id: 1, booking_id: 1, bedroom_id: 1, created_at: "2010-06-22 18:55:57", updated_at: "2010-06-22 18:55:57">]
所以我建立了一个这样的表格：
<% form_for @booking do |form| %>
<% for bedroom in @available_bedrooms %>
<%= check_box_tag "booked_bedrooms_attributes[#{bedroom.id}][bedroom_id]", bedroom.id %> <%= bedroom.name %>
as
<%= select_tag "booked_bedrooms_attributes[#{bedroom.id}][booking_type_id]", options_for_select(bedroom.booking_types.map {|p| [p.name, p.id]}) %>
<% end %>
<% end %>
但这行不通。预订已保存，但没有新的 BookedBedroom 记录。有人可以告诉我有什么问题吗？
我知道我可以使用 formtastic 或一些 fields_for 但我想以硬编码形式解决问题，以进行演示。