belongs_to 关联导轨的嵌套属性

Question

我有两个模型，投诉和公司。公司投诉belongs_to 和accepts_nested_attributes，公司投诉has_many。

# Models

class Complaint < ActiveRecord::Base
  attr_accessible :complaint, :date, :resolved

  belongs_to :user, :class_name => 'User', :foreign_key => 'id'
  belongs_to :company, :class_name => 'Company', :foreign_key => 'id'
  has_many :replies

  accepts_nested_attributes_for :company

end

class Company < ActiveRecord::Base
  attr_accessible :name

  has_many :complaints, :class_name => 'Complaint', :foreign_key => 'id'
  has_many :branches, :class_name => 'Branch', :foreign_key => 'id'
  belongs_to :industry

end

在投诉控制器中，我尝试使用新方法建立公司。

# Complaint Controller

class ComplaintsController < ApplicationController
...
def new
    @complaint = Complaint.new
    @complaint.build_company

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

在表单中，我添加了一个字段，用于向公司添加名称属性。

# Complaint Form

<%= form_for(@complaint) do |f| %>
  <% if @complaint.errors.any? %>
    <div id="error_explanation">
      <h2><%= pluralize(@complaint.errors.count, "error") %> prohibited this complaint from being saved:</h2>

      <ul>
      <% @complaint.errors.full_messages.each do |msg| %>
        <li><%= msg %></li>
      <% end %>
      </ul>
    </div>
  <% end %>

  <div class="field">
    <%= f.label :complaint %><br />
    <%= f.text_area :complaint, :rows => 5 %>
  </div>
  <div class="field">
    <%= f.label :date %><br />
    <%= f.datetime_select :date %>
  </div>

  <% if current_user.try(:admin?) %>
    <div class="field">
      <%= f.label :resolved %><br />
      <%= f.check_box :resolved %>
    </div>
  <% end %>

  <%= fields_for :company do |company| %>
    <div class="field">
      <%= company.label :name, 'Company' %>
      <%= company.text_field :name %>
    </div>
  <% end %>

  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>

表单提交但仅保存投诉。公司的用户输入被忽略。为什么这不会创建一个新公司？

Answer 1

我的错误在于表格。我错过了fields_for :company之前的f.

<%= f.fields_for :company do |company| %>