javascript - Rails 4 Nested_form 在 5 个问题后删除链接

Question

我正在使用嵌套表单 gem，其中有两个字段， View 给出为

<%= f.fields_for :round_questions do |question| %>
                          <%= question.label :question %>
                          <%= question.text_field :question %>
                              Rate the Answer</br></br>
                           <div class="star-questions" ></div>
                          <%= question.text_field :answer_rating, :class=> 'star-answer', :disabled=>true %>
                          <%= question.link_to_remove "Remove this Question" %>
                      <% end %>
                      <%= f.link_to_add "Add a Question", :round_questions,
                                        :class=> 'btn waves-effect waves-light btn-medium custom_btn_gray' %>

在 Controller 中我有

@interview_round = InterviewRound.where(id: params[:id]).first
    5.times {@interview_round.round_questions.build}
    respond_to do |format|
      format.js
    end

现在，当表单加载时，将出现 5 个问题，我只想在有人添加问题时才提供删除链接，但此链接提供了所有问题的删除链接，请告诉我如何解决这个问题？

Answer 1

尝试这样给出

<%= question.link_to_remove "Remove this Question" if question.object.persisted? %>