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我正在尝试为具有多个帐单地址和邮政地址的客户配置文件创建一个嵌套组。当我浏览到客户配置文件表单时，我看到了客户配置文件表单的字段，但我没有看到帐单地址表单的任何字段或邮寄地址表格。有任何想法吗？我的控制器、模型和视图如下。

目标是拥有一个可以有多个帐单地址和多个邮政地址的客户资料。

客户档案模型：

    class CustomerProfile < ActiveRecord::Base
        #These entries are required to create a nested model form (multiple models in one form)
        validates_presence_of :customerNumber
        validates_uniqueness_of :customerNumber


        has_many :billing_addresses, :dependent => :destroy
        has_many :postal_addresses,  :dependent => :destroy

        accepts_nested_attributes_for :billing_addresses, :reject_if => lambda { |a| a[:content].blank?}, :allow_destroy => true
        accepts_nested_attributes_for :postal_addresses, :reject_if => lambda { |a| a[:content].blank?}, :allow_destroy => true
    end

帐单地址型号：

    class BillingAddress < ActiveRecord::Base
        belongs_to :customer_profile
        attr_protected :customerNumber
    end

邮政地址模型：

    class PostalAddress < ActiveRecord::Base
        belongs_to :customer_profile
        attr_protected :customerNumber
    end

客户档案控制器：

    def new
        @customer_profile = CustomerProfile.new

        respond_to do |format|
          format.html # new.html.erb
          format.json { render json: @customer_profile }
        end
    end


    def create
        @customer_profile = CustomerProfile.new(params[:customer_profile])

        respond_to do |format|
          if @customer_profile.save
            format.html { redirect_to @customer_profile, notice: 'Customer profile was successfully created.' }
            format.json { render json: @customer_profile, status: :created, location: @customer_profile }
          else
            format.html { render action: "new" }
            format.json { render json: @customer_profile.errors, status: :unprocessable_entity }
          end
        end
    end

客户资料表格：

    <br />
    <h3>Add new customer profile with Billing and Postal Address</h3>
    <br />
    <h4> Customer Profile </h4>
    <%= form_for @customer_profile do |f| %>
        <div class="field">
            <%= f.label :customerNumber %><br />
            <%= f.text_field :customerNumber %>
        </div>

        #.... a few other fields removed to keep this short

    <br />
        <h4> Billing Address </h4>
        <%= f.fields_for :billing_addresses do |b| %>

            <div class="field">
                <%= b.label :addressLine1 %><br />
                <%= b.text_field :addressLine1 %>
            </div>

        #.... a few other fields removed to keep this short

        <% end %>

        <br />
        <h4> Postal Address </h4>
        <br />
        <%= f.fields_for :postal_addresses do |p| %>

            <div class="field">
                <%= p.label :addressLine1 %><br />
                <%= p.text_field :addressLine1 %>
            </div>

        #.... a few other fields removed to keep this short

        <br />
        <% end %>
        <%= f.submit %>
    <% end %>
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1 回答 1

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fields_for 将显示作为 customer_profile 子项的 billing_addresses 字段。如果这是一个新对象，您需要添加一个或多个，或者 - 通过 JavaScript 添加适当的字段。你可能想要两个，所以当他们到达那里时会有一个空字段，然后他们可以添加更多。

您可以执行 a@customer_profile.billing_addresses.build以在呈现表单时获得一个空的。

你知道如何通过 javascript 添加和删除字段吗？它在railscasts上得到了很好的报道。

于 2013-02-05T23:45:10.930 回答