我真的很难理解如何使用第二个模型连接的模型创建嵌套表单。我在SO上查了一个number of posts,尝试了很多方法,但无法弄明白,不过我觉得我差不多了。
我正在尝试以一种形式创建订阅,客户和客户的地址,但到目前为止,我只设法创建订阅和客户。我的地址有问题。
客户可以有多个订阅,但只有一个地址(暂时,无论如何)
我的(缩写)代码如下所示:
subscription.rb
class Subscription < ActiveRecord::Base
belongs_to :customer
has_one :address, through: :customer
accepts_nested_attributes_for :customer, :address
attr_accessible :customer_attributes, :address_attributes
customer.rb
class Customer < ActiveRecord::Base
has_one :address
has_many :subscriptions
accepts_nested_attributes_for :address
attr_accessible :address_attributes
address.rb
class Address < ActiveRecord::Base
belongs_to :customer
has_many :subscriptions, through: :customer
subscriptions_controller.rb
def new
@subscription = Subscription.new
customer = @subscription.build_customer
address = customer.build_address
subscription_line_items = @subscription.subscription_line_items.build
end
订阅/ _form.html.erb
<%= form_for(@subscription) do |subscription_form| %>
<% if @subscription.errors.any? %>
<!-- Error stuff -->
<% end %>
<div class="field">
<%= subscription_form.label :start_date %><br />
<%= subscription_form.text_field :start_date %>
</div>
...
<h2>Customer Details</h2>
<%= subscription_form.fields_for :customer do |customer_fields| %>
<%= customer_fields.label :first_name %><br />
<%= customer_fields.text_field :first_name %>
...
<% end %>
<h2>Address</h2>
<%= subscription_form.fields_for :address do |address_fields| %>
<%= address_fields.label :address_1 %><br />
<%= address_fields.text_field :address_1 %>
...
<% end %>
<div class="actions">
<%= subscription_form.submit %>
</div>
<% end %>
我知道我的控制器代码正常工作,就像我直接在控制台中尝试它一样,我得到一个空的地址对象,但这并没有在表单中呈现,这让我相信我的模型代码仍然没有不对。
答案 0 :(得分:1)
紫色,看你最新的问题:
Can't mass-assign protected attributes: customer, address
您需要在模型中添加这些属性,如:
attr_accessible :customer, :address