Question

我已经有一个表单可以将SaleQualifiers添加到我的应用中 - 在我使用时可以正常使用：

<%= form_for(@sale_qualifier, :html => {role: :form, 'data-model' => 'sale_qualifier'}, remote: true) do |f| %>

form_for的问题在于我希望将表单内联在我的视图中的表格行中 - 这是一种解决方法，我现在正在使用：

<%= form_tag('/sale_qualifiers', method: :post, remote: true) do -%> <%= fields_for :sale_qualifier do |ff| %>

这对于我需要生成的大多数字段都可以正常工作，但我已经为Answer（Answer belongs_to SaleQualifier）提供了一个嵌套属性字段。这不会在视图中生成正确的字段名称，因此当我以这种方式保存对象时，我不会捕获answer_attributes。

使用form_for：

，这是完整的工作表单

<div class="panel panel-default">
 <%= form_for(@sale_qualifier, :html => {role: :form, 'data-model' => 'sale_qualifier'}, remote: true) do |f| %>
  <% if @sale_qualifier.errors.any? %>
  <div id="error_explanation">
    <h2><%= pluralize(@sale_qualifier.errors.count, "error") %> prohibited this answer from being saved:</h2>
    <ul>
    <% @sale_qualifier.errors.full_messages.each do |message| %>
      <li><%= message %></li>
    <% end %>
    </ul>
  </div>
<% end %>
<div class="panel-body">
  <div class="col-sm-6">
    <h2><%= @question.question_text %></h2>
    <% unless @question.id == 1 %>
      <p><%= link_to('Back', edit_sale_qualifier_path(id: @prior_sale_qualifier), data: { disable_with: "Loading..." }, :remote => true) %></p>
    <% end %>
  </div>
  <div class="col-sm-6">
    <div class="form-group">
      <%= f.hidden_field :sales_opportunity_id, :value => @sales_opportunity.id %>
    </div>
    <div class="form-group">
      <%= f.hidden_field :question_id, :value => @question.id %>
    </div>
    <% unless @question.id == 1 %>
      <div class="form-group">
        <%= f.hidden_field :prior_question_id, :value => @prior_question_id %>
      </div>
    <% end %>
    <%= f.fields_for :answer do |answer| %>
    <div class="form-group">
      <% if @question.answer_type == 'Text Field' %>
        <%= answer.text_area :answer_text, :placeholder => "Enter your answer", :class => "form-control"%>
      <% end %>
      <% if @question.answer_type == 'Datetime' %>
        <div class='input-group date' id='datetimepicker' data-date-format="YY.MM.DD">
          <%= answer.text_field :answer_text, class: "form-control", data: { date_format: 'YYYY/MM/DD' }, :placeholder => "YYYY/MM/DD" %>
          <span class="input-group-addon">
            <span class="glyphicon glyphicon-calendar"></span>
           </span>
        </div>
      <% end %>
      <% if @question.answer_type == 'Boolean' %>
        <%= answer.select :answer_text, [['Yes', true], ['No', false]] %>
      <% end %>
      <% if @question.answer_type == 'Update' || @question.answer_type == 'Result' %>
        <%= answer.hidden_field :answer_text, :value => "Updated" %>
      <% end %>
      <span class="warning-block"></span>
      <span class="help-block"></span>
    </div>
    <% end %>
      <% if @question.answer_type == 'Update' || @question.answer_type == 'Result' %>
        <div class="actions">
          <%= f.submit "Done", class: "btn btn-large btn-success", data: { disable_with: "Submitting..." }, autocomplete: 'off' %>
        </div>
      <% else %>
        <div class="actions">
          <%= f.submit "Submit", class: "btn btn-large btn-success", data: { disable_with: "Submitting..." }, autocomplete: 'off' %>
        </div>
      <% end %>
    <% end %>
  </div>
 </div>
</div>

以下是使用form_tag无效的代码：

<%= form_tag('/sale_qualifiers', method: :post, remote: true) do -%>
 <%= fields_for :sale_qualifier do |ff| %>
  <%= ff.hidden_field :sales_opportunity_id, :value => @sales_opportunity.id %>
  <%= ff.hidden_field :question_id, :value => @question.id %>
   <tr>
    <td><%= @question.question_text %></td>
    <td>
        <%= ff.fields_for :answer do |answer| %>
        <% if @question.answer_type == 'Text Field' %>
          <%= answer.text_area :answer_text%>
        <% end %>
        <% if @question.answer_type == 'Datetime' %>
            <div class='input-group date' id='datetimepicker' data-date-format="YY.MM.DD">
            <%= answer.text_field :answer_text, class: "form-control", data: { date_format: 'YYYY/MM/DD' }, :placeholder => "YYYY/MM/DD" %>
            <span class="input-group-addon">
             <span class="glyphicon glyphicon-calendar"></span>
            </span>
             </div>
        <% end %>
        <% if @question.answer_type == 'Boolean' %>
          <%= answer.select :answer_text, [['Yes', true], ['No', false]] %>
        <% end %>
        <% end %>
        </td>
        <td>
            <%= ff.submit "Submit", class: "btn btn-large btn-success", data: { disable_with: "Submitting..." }, autocomplete: 'off' %>
        </td>
    </tr>
<% end %>     
<% end %>

为了完整起见，我遇到的问题是为工作代码生成的html会创建以下字段：

textarea id="sale_qualifier_answer_attributes_answer_text" name="sale_qualifier[answer_attributes][answer_text]"

损坏的代码会创建以下html：

Textarea id="sale_qualifier_answer_answer_text" name="sale_qualifier[answer][answer_text]"

那么如何才能显示html输出＆＃34; sale_qualifier [answer_attributes] [answer_text]＆＃34;而不是＆＃34; sale_qualifier [回答] [answer_text]＆＃34;在这个例子中使用form_tag？

Answer 1

在多个嵌套表单中，将调用fields_for标记否则应该遵循正确的父和属性约定它使表单属性呈现错误并导致错误。

<%= form_tag('/sale_qualifiers', method: :post, remote: true) do -%>
 <%= fields_for :sale_qualifier do |ff| %>   
   <%= ff.fields_for :answer_attributes do |answer| %>

以上流程将是正确的＆amp;将生成应有的属性。

如何在Rails 4中使用form_tag嵌套模型？

1 个答案: