[英]How to manually build a correct nested form with accepts_nested_attributes_for?
I'm trying to manually build form fields for a testing purpose. 我正在尝试出于测试目的手动构建表单字段。 I got the following models:
我得到以下模型:
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
When I try the following in a console, booking and the associated booked_bedroom gets saved: 当我在控制台中尝试以下操作时,预订和关联的booked_bedroom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">]
So I built a form like this: 所以我建立了这样一个表格:
<% 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 %>
But this won't work. 但这是行不通的。 The booking gets saved, but there are no new BookedBedroom records.
预订已保存,但没有新的BookedBedroom记录。 Can someone tell me what's wrong?
有人可以告诉我怎么了吗?
I know i could use formtastic or some fields_for but I wanted to solve the problem in hardcoded forms, for demonstration purposes. 我知道我可以使用formtastic或某些fields_for,但出于演示目的,我想以硬编码形式解决该问题。
I believe it should be something like 我相信应该是这样
<%= check_box_tag "booking[booked_bedrooms_attributes][][bedroom_id]",
bedroom.id %>
<%= select_tag "booking[booked_bedrooms_attributes][][booking_type_id]",
options_for_select(bedroom.booking_types.map {|p| [p.name, p.id]}) %>
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