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我有三个模型Report , Question , Answer

回答

belong_to :question

问题

belong_to :reports
has_many :answers, :dependent => :destroy  
accepts_nested_attributes_for :answers, :allow_destroy => true

报告

has_many :questions, :dependent => :destroy  
accepts_nested_attributes_for :questions, :allow_destroy => true

在创建新报告时，会随机选择一些问题添加到报告中并以这种方式显示表格：

报表

    <%= form_for @report do |f| %>
    <div class="field">
        <%= f.fields_for :questions do |builder| %>
          <%= render "question_fields", :f => builder %>
        <% end %>
    </div>
    <div class="actions">
        <%= f.submit "Submit Report"%>
    </div>
    <% end %>

---部分问题_字段---

<h4 class="question_name">
    <%= f.object.name %>
</h4>

<%= f.fields_for :answers do |answer,index| %>  
    <%= render 'answer_fields', :f => answer %>  
<% end %>

---Partial Answer_Fields--- <%= f.text_field :name, :placeholder => "在这里添加你的答案" %>

但是，当我尝试编辑/创建新报告时，它会获取该特定问题的所有现有答案。而我想实现类似的东西：

---部分问题_字段---

<h4 class="ques_title">
    <%= f.object.name %>
</h4>

<% f.object.answers_for_report(@report).each do |answer| %>  
    <%= render 'answer_fields', :f => answer %>  
<% end %>

---部分问题_字段---

  <b>What should be code here so that it again acts same as nested attributes and gets updated succesfully !!!</b>

问题模型

belong_to :reports
has_many :answers, :dependent => :destroy  
accepts_nested_attributes_for :answers, :allow_destroy => true

def answers_for_report(@report)
    self.answers.where("report_id = ? ",report.id)
end
4

1 回答 1

1

这是我的问题的答案：

报告表就像

<%= form_for @report do |f| %>
<div class="field">
    <%= f.fields_for :questions do |builder| %>
      <%= render "question_fields", :f => builder %>
    <% end %>
</div>
<div class="actions">
    <%= f.submit "Submit Report"%>
</div>
<% end %>

然后问题'question_fields'就像

<%= question.fields_for :answers, question.object. answers_for_report(@report) do |answer| %>  
    <%= render 'answer_fields', :f => answer %>  
<% end %>

这仅传递答案的集合/记录集，并仅为那些选定的答案呈现字段。

于 2013-01-16T18:22:56.407 回答