Question

我有一个模特

class ServiceRequest < ActiveRecord::Base
  has_many :services
  accepts_nested_attributes_for :services

  ...
end

和孩子

class Service < ActiveRecord::Base
  belongs_to :service_category, :foreign_key => "wsi_web_serv_cats_uid_fk"
  belongs_to :service_type, :foreign_key => "wsi_web_serv_types_uid_fk"
  belongs_to :service_subtype, :foreign_key => "wsi_web_srv_subtypes_uid_fk"
  belongs_to :service_requests, :foreign_key => "wsi_web_inq_audits_uid_fk"
end

并通过类似的形式创建它：

<% form_for(@request, :url => { :action => :create }) do |form| %>
    <table>   
        <tr>
          <td><font style="font-weight: bold" color="red">*</font><b>First Name</b></td>
            <td><b>Middle Initial</b></td>
            <td><font style="font-weight: bold" color="red">*</font><b>Last Name</b></td>
        </tr>
        <tr>
            <td><%= form.text_field :first_name %></td>
            <td><%= form.text_field :win_middle_init, :size => "2" %></td>
            <td><%= form.text_field :last_name %></td>
        </tr>
        <tr>
            <td colspan="2">
                <font style="font-weight: bold" color="red">*</font><b>Address 1</b><br/>
                <%= form.text_field :address_1 %><br/>
                <%= form.text_field :address_2 %>
            </td>
        </tr>
        <tr>
            <td><font style="font-weight: bold" color="red">*</font><b>City</b></td>
            <td><font style="font-weight: bold" color="red">*</font><b>State</b></td>
            <td><font style="font-weight: bold" color="red">*</font><b>Zip Code</b></td>
        </tr>
        <tr>
            <td><%= form.text_field :municipality %></td>
            <td><%= form.text_field :state, :size => "4" %></td>
            <td><%= form.text_field :zip, :size => "9" %></td>
        </tr>
        <tr>
            <td>
                <font style="font-weight: bold" color="red">*</font><b>Phone Number</b><br/>
                <%= form.text_field :day_phone %>
            </td>
        <tr/>
        <tr>
            <td>
                <font style="font-weight: bold" color="red">*</font><b>Email</b><br/>
                <%= form.text_field :email %>   
            </td>
        <tr/>
        <tr>            
            <td>
                <font style="font-weight: bold" color="red">*</font><b>Confirm Email</b><br/>
                <%= form.text_field :email_confirmation %>
            </td>
        </tr>
        <tr>
            <td>
              <font style="font-weight: bold" color="red">*</font><b>Preferred Contact</b><br/>
              <%= form.select "contact_method", options_for_select([["Phone", "PHN"], ["Email", "EML"], ["Phone or Email", "BTH"]]) %>
            </td>
        </tr>
    </table>

    <% form.fields_for :services do |fields| %>
        <%= fields.hidden_field :wsi_web_serv_cats_uid_fk %>
        <%= fields.hidden_field :wsi_web_serv_types_uid_fk %>
        <%= fields.hidden_field :wsi_web_srv_subtypes_uid_fk %>
    <% end %>           

    <p>
        <%= form.submit "Create" %>
    </p>            
<% end %>

隐藏字段是从页面上的表单填充的，该表单来自此页面。一切正常。我的创建方法如下：

def create
    service_request = ServiceRequest.new(params[:service_request])

    if service_request.save!
        flash[:notice] = "Information submitted successfully. You will be contacted by a customer service representative regarding the services you selected."
        redirect_to :controller => "customer", :action => "index"
    else
        flash[:notice] = "Error submitting info. Please try again."
        redirect_to :back
    end         
end

一切都在数据库中创建得很好。但是，这两个模型没有通过外键链接。换句话说，永远不会在子模型中设置外键。我该如何解决这个问题？我看到有人说这是一个记录在案的错误，但我无法在任何地方发现这是真的。谢谢你的帮助。

Answer 1

您还需要在ServiceRequest类中的has_many上提供:foreign_key => "wsi_web_inq_audits_uid_fk"。有关所有可用的has_many参数，请参阅API Docs。

Answer 2

为什么这是复数？

class Service < ActiveRecord::Base
  ...
  belongs_to :service_requests, :foreign_key => "wsi_web_inq_audits_uid_fk"
end

accepts_nested_attributes_for不生成外键

2 个答案: