Rails嵌套表单未更新 [英] Rails Nested Forms Not Updating

问题描述

我在获取update_attributes来更新表单中的嵌套模型时遇到问题.我没有任何错误，但是嵌套属性没有保存.这是相关的代码:

I'm having a problem getting update_attributes to update nested models in my form. I don't have any errors but the nested attributes aren't saving. Here's the relevant code:

用户模型:

class User < ActiveRecord::Base 
  has_many :orders
  has_many :achievements    

  accepts_nested_attributes_for :achievements 

成就模式:

class Achievement < ActiveRecord::Base
  belongs_to :user 

编辑用户表单:

<%= form_for @user, :html => { :multipart => true } do |f| %>   

...

<%= f.fields_for :achievements do | a | %>
    <%= a.label :title %>
    <%= a.text_field :title %><br>
<% end  %>  

编辑方法:

def edit    
    @user = nil
    if params[:id] != nil
      @user = User.find(params[:id]) 
    elsif
      @user = current_user
    else
      redirect_to login_path
    end  
    5.times { @user.achievements.build }
  end  

更新方法:

@user.update_attributes params[:user]

但是当我检查@ user.achievements数组时，即使我填写表格，它也总是空的.有人知道我在做什么错吗?

But when I check the @user.achievements array it's always empty even when I fill out the forms. Does anyone know what I'm doing wrong?

推荐答案

您应更改为accepts_nested_attributes_for :achievements_attributes.您可以检查日志文件中表单帖子的参数，以了解Rails如何命名表单元素.或检查页面上的HTML.

You should change to accepts_nested_attributes_for :achievements_attributes. You can inspect the parameters for the form posts in your log file to see how rails named the form elements. Or inspect the HTML on your page.

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