用于belongs_to关联导轨的嵌套属性 [英] Nested attributes for belongs_to association rails

问题描述

我有两个模型，投诉和公司。对公司和公司 has_many 抱怨 belongs_to 和 acceptions_attributes 抱怨。

 ＃Models 
 
 class抱怨< ActiveRecord :: Base 
 attr_accessible：投诉，：日期，：已解决
 
 belongs_to：user，：class_name => 'User'，：foreign_key => 'id'
 belongs_to：company，：class_name => 'Company'，：foreign_key => 'id'
 has_many：回复
 
 accept_nested_attributes_for：company 
 
 end 
 
 class公司< ActiveRecord :: Base 
 attr_accessible：name 
 
 has_many：complaints，：class_name => '抱怨'，：foreign_key => 'id'
 has_many：branches，：class_name => 'Branch'，：foreign_key => 'id'
 belongs_to：行业
 
结束
  

投诉控制器我尝试在新方法中构建公司。

 ＃投诉控制器
 
类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 
  

在表格中，我添加了一个用于向公司添加名称属性的字段。

b
$ b

 ＃投诉表格
 
 <％= form_for（@complaint）do | f | ％GT; 
 <％如果@ complaint.errors.any？ ％GT; 
< div id =error_explanation> 
< h2><％= pluralize（@ complaint.errors.count，error）％>禁止保存此投诉：< / h2> 
 
< ul> 
<％@ complaint.errors.full_messages.each do | msg | ％GT; 
< 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：已解决％> 
< / div> 
<％end％> 
 
 <％= fields_for：company do | company | ％GT; 
< div class =field> 
 <％= company.label：name，'公司'％> 
<％= 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。为什么不能创建一个新的公司？

解决方案

我的错误在于形式。我在 fields_for：company

<$之前错过了 f。 p $ p> <％= f.fields_for：company do | company | ％GT;


I have two models, Complaint and Company. Complaint belongs_to and accepts_nested_attributes for Company, and Company has_many Complaints.

# 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

In the Complaint Controller I try build a Company in the new method.

# 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

In the form I have added a field for adding a name attribute to the Company.

# 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 %>

The form submits but only the Complaint is saved. The user input for Company is disregarded. Why won't this create a new Company?

解决方案

My mistake was in the form. I missed the f. before the fields_for :company

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

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