Rails + MongoMapper + EmbeddedDocument窗体帮助 [英] Rails + MongoMapper + EmbeddedDocument form help

问题描述

我正在研究一个非常简单的Web应用程序（着名的遗言），并且正在使用Rails 2.3.5 + MongoMapper 0.7.2并使用嵌入式文档。我有两个问题要问：

首先，有没有使用Rails + MongoMapper + EmbeddedDocument的示例应用程序？最好在GitHub或其他类似的网站上，以便我可以查看源代码并查看我应该在哪里领导？如果没有...

...处理此任务的最佳方法是什么？我将如何创建一个表单来处理嵌入式文档。

我正在尝试将地址添加到用户。如果您愿意的话，我可以抛弃这两种模式。

感谢您的帮助！ 解决方案

以下是我在其中一个应用中使用的基本方法。问题有很多答案 - 问题是文件，答案是嵌入文件。您可以使用添加答案链接生成另一个答案字段，并使用删除链接删除一个。

_form.html.erb：

 <％form_for @problem do | f | ％GT; 
<％= f.error_messages％> 
 
< p> 
<％= f.label：content％>< br /> 
<％= f.text_area：content，：size => '50x7'％> 
< / p> 
 
 ...等等... 
 
 <％= add_answer_link（add answer）％> 
< div id =answers> 
<％= render：partial => 'answer'，：collection => @ problem.answers％> 
< / div> 
 
< p><％= f.submit提交％>< / p> 
<％end％> 
  

_answer.html.erb：

 < div class =answer> 
 <％fields_for'problem [answers]'，answer，：index => nil do | f | - ％GT; 
 <％= f.label：content，答案＃{answer.id}：％> 
<％= f.text_field：content，：size => 50％> 
 <％= link_to_function（remove），$（this）.up（'。answer'）。remove（）％> 
 <％end  - ％> 
< / div> 
  

problems_helper.rb

  module ProblemsHelper 
 def add_answer_link（name）
 link_to_function name do | page | 
 page.insert_html：bottom，answers，：partial => 'answer'，：object => Answer.new 
结束
结束
结束
  

我剪掉一些实施的小部分，但应该工作。

I am working on a pretty simple web application (famous last words) and am working with Rails 2.3.5 + MongoMapper 0.7.2 and using embedded documents. I have two questions to ask:

First, are there any example applications out there using Rails + MongoMapper + EmbeddedDocument? Preferably on GitHub or some other similar site so that I can take a look at the source and see where I am supposed to head? If not ...

... what is the best way to approach this task? How would I go about creating a form to handle an embedded document.

What I am attempting to do is add addresses to users. I can toss up the two models in question if you would like.

Thanks for the help!

解决方案

Here's the basic approach I took in one of my apps. Problem has many answers - problem is a document, answer is an embedded document. You can use the "add answer" link to generate another answer field, and the "remove" link to delete one.

_form.html.erb:

<% form_for @problem do |f| %>
  <%= f.error_messages %>

  <p>
    <%= f.label :content %><br />
    <%= f.text_area :content, :size => '50x7' %>
  </p>

  ...etc...

  <%= add_answer_link "(add answer)" %>
  <div id="answers">
    <%= render :partial => 'answer', :collection => @problem.answers %>
  </div>

  <p><%= f.submit "Submit" %></p>
<% end %>

_answer.html.erb:

<div class="answer">
  <% fields_for 'problem[answers]', answer, :index => nil do |f| -%>
    <%= f.label :content, "Answer #{answer.id}:" %>
    <%= f.text_field :content, :size => 50 %>
    <%= link_to_function "(remove)", "$(this).up('.answer').remove()" %>
  <% end -%>
</div>

problems_helper.rb

module ProblemsHelper
  def add_answer_link(name)
    link_to_function name do |page|
      page.insert_html :bottom, "answers", :partial => 'answer', :object => Answer.new
    end
  end
end

I cut out a couple minor bits of the implementation, but that should work.

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