Question

我的主要记录是牌照（如牌照所示）它可以有很多翻译（含义或评论）在一页上我想：
1）显示板记录并允许用户对板进行评级 2）显示所有现有的翻译记录，并允许用户投票给一个 3）允许用户创建新的翻译记录
我正在使用form_for the Plate，以及fields_for用于现有的翻译记录我的研究表明应该有办法做到这一点，但我的代码并没有提供一个空白表格。目前我正在尝试第二个fields_for循环目前，我只专注于我的渲染表单页面，我还没有处理输入。最终的fields_for用于显示新翻译输入的空白框，而是显示最后的现有翻译我将不胜感激任何建议以下是我的编辑表单：_rate_or_vote.html.erb

<!-- app/views/plates/_rate_or_vote.html.erb -->
<%= form_for(@plate) do |f| %>

<% if @plate.errors.any? %>
  <div id="error_explanation">
    <h2><%= pluralize(@plate.errors.count, "error") %>
      prohibited this plate from being updated:</h2>
    <ul>
      <% @plate.errors.full_messages.each do |msg| %>
      <li><%= msg %></li>
      <% end %>
    </ul>
  </div>
<% end %>

<h1>Rate the Plate</h1>

<span class="form-group">
  <%= f.label :input_rating, "Your Plate Rating" %>
  <%= f.select :input_rating, options_for_select(RATINGS)  %>
</span>&nbsp&nbsp
<span class="form-group">
  <%= f.label :rating, "Average Rating" %>
  <%= f.text_field :rating , :value => (number_with_precision(f.object.rating, :precision => 2) || 0) %>
</span>&nbsp&nbsp
<span class="form-group">
  <%= f.label :plate_number, "Plate Number" %>
  <%= f.text_field :plate_number %>
</span>&nbsp&nbsp
<span class="form-group">
  <%= f.label :state, "State" %>
  <%= f.text_field :state, class: "form-control" %>
</span><br><br>
<span style="background-color:#DCDCDC; color:#000000; font-style: normal; font-family:Georgia;">
  Contributor</span>
<span style="border:1px solid black;padding:3pt;">
  <%= @plate.user.full_name %></span>&nbsp&nbsp
<span class="form-group">
  <%= f.label :plate_image, "Plate Image File" %>
  <%= f.file_field :plate_image %>
</span><br><br>

<h1>Existing Translations and/or Comments - You can vote for one</h1>
<!-- %= f.fields_for :translations do |ff| %-->
<%= f.fields_for :translations, @plate.translations do |ff| %>
<span>Click this box to vote for this translation:</span>&nbsp
<span><%= check_box_tag "translation_ids[]", :id %></span>&nbsp&nbsp
<span><%= ff.label "Current votes" %>
  <%= ff.text_field :votes, :value => (number_to_percentage(ff.object.votes / ( @plate.translation_votes.nonzero? || 1 ) * 100,
  precision: 0)) %>
</span>&nbsp&nbsp
<span style="background-color:#DCDCDC; color:#000000; font-style: normal; font-family:Georgia;">
  Contributor</span>
<span style="border:1px solid black;padding:3pt;">
  <%= ff.object.user.full_name %></span><br><br>
<span>Translation and/or Comment</span><br>
<span>
<%= ff.text_area :meaning, :cols => 60, :rows => 10  %>
</span><br><br>
<% end %>

<h1>Offer a new Translation and/or Comment</h1>
<!-- %= f.fields_for :translations do |ff| %-->
<%= f.fields_for :translations, @plate.translations do |fff| %>
  <div>
<!-- %= fff.label :meaning, "Translation" %-->
    <%= fff.text_field :meaning %>
  </div><br><br>
<% end %>

<%= f.submit "Save and/or Return", :name => "update", class: "btn btn-default" %>

Answer 1

好的，所以@plate.translations是已经在板上的当前翻译集。

如果你想要一个新的字段用于...那你必须实际建立一个新的。

例如：

<%= f.fields_for :translations, [@plate.translations.build] do |fff| %>
  <div>
    <%= fff.text_field :meaning %>
  </div><br><br>
<% end %>

Rails如何在一个页面上显示现有的相关记录并允许新的相关记录输入

1 个答案: