Question

模型是

has_many :questions
accepts_nested_attributes_for :questions

控制器

params.require(:survey).permit(:title,:description,questions_attributes: [:title])

查看

<%= f.fields_for :questions,@survey.questions.build do |question| %>
  <div class="form-group">
   <label class="col-lg-12 control-label" for="">Title</label>
   <p><%= question.text_field :title %></p>
  </div>
<% end %>

通过这个我只输入一次问题。我如何在其中添加多次问题。我无法理解我是用JavaScript做任何按钮还是按照我的方式做这个？

Answer 1

您可以使用＆＃34; nested_form＆＃34;添加多个问题像这样的宝石： -

# Add gem in Gemfile and run bundle install
gem "nested_form"

在视图中： -

<%= nested_form_for @survey do |f| %>
    <%= f.fields_for :questions do |question| %>
        <div class="form-group">
            <label class="col-lg-12 control-label" for="">Title</label>
            <p><%= question.text_field :title %></p>
            <%= question.link_to_remove "Remove this answer" %>
        </div>
    <% end %>
    <%= f.link_to_add "Add more questions", :questions %>
<% end %>

Rails 4：为字段循环

1 个答案: