Ruby on rails Rails中的多个嵌套表单和简单表单

我是一个Rails新手，创建了一个约会网站OkCupid的克隆作为练习。我正在制作表单，以显示一个问题、其可能的答案和可能的SoughtAnswers（用户选择的答案表示他/她希望其他用户如何回答相同的问题）

示例数据：

<%= simple_form_for @answered_question do |aq_form| %>
  <%= aq_form.input :question_id, as: :hidden %>
  <%= @answered_question.question.body %>

  <%= aq_form.simple_fields_for @answered_question.question.answers do |answer_fields| %>
    <%= answer_fields.input :body %>
  <% end %>

  <div class='sought-answer-header'>
    People I'm most interested in would answer:
  </div>

  <%= aq_form.simple_fields_for @answered_question.sought_answers do |sa_fields| %>
    <%= sa_fields.input :answer, label_method: :body, value_method: :id, include_blank: :false, label_html: { class: 'sought-answer-body' } %>
  <% end %>

  <%= aq_form.button :submit %>
<% end %>

问题：“你有多少个孩子？”

回答：“2”（其他可能的回答包括“0”、“1”和“3+”）

SoughtAnswers：“0”、“1”、“2”

问题：

<%= simple_form_for @answered_question do |aq_form| %>
  <%= aq_form.input :question_id, as: :hidden %>
  <%= @answered_question.question.body %>

  <%= aq_form.simple_fields_for @answered_question.question.answers do |answer_fields| %>
    <%= answer_fields.input :body %>
  <% end %>

  <div class='sought-answer-header'>
    People I'm most interested in would answer:
  </div>

  <%= aq_form.simple_fields_for @answered_question.sought_answers do |sa_fields| %>
    <%= sa_fields.input :answer, label_method: :body, value_method: :id, include_blank: :false, label_html: { class: 'sought-answer-body' } %>
  <% end %>

  <%= aq_form.button :submit %>
<% end %>

我使用simple_form gem创建表单来收集用户对问题的回答。我不知道如何正确显示表单并创建一个新的AnsweredQuestion，它存储用户、问题、答案和SoughtAnswers，以获得对问题的完整回答

我应该如何改变我的模型和形式来正确地创建一个被回答的问题

以下是相关文件的摘录部分：

问题.rb

class Question < ActiveRecord::Base
  validates :body, presence: true, uniqueness: true
  has_many :answers, inverse_of: :question, dependent: :destroy
  has_many :answered_questions, inverse_of: :question, dependent: :destroy
  has_many :sought_answers, through: :answers, dependent: :destroy
  accepts_nested_attributes_for :answers, reject_if: :all_blank

class Answer < ActiveRecord::Base
  belongs_to :question, inverse_of: :answers
  has_many :answered_questions, inverse_of: :answer, dependent: :destroy
  has_many :sought_answers, dependent: :destroy

class SoughtAnswer < ActiveRecord::Base
  has_one :user, through: :answered_question
  belongs_to :answer
  belongs_to :answered_question, inverse_of: :sought_answers

class User < ActiveRecord::Base
  has_many :answered_questions, dependent: :destroy
  has_many :questions, through: :answered_questions
  has_many :sought_answers, dependent: :destroy

class AnsweredQuestion < ActiveRecord::Base
  belongs_to :user
  belongs_to :question
  belongs_to :answer
  has_many :sought_answers, inverse_of: :answered_question, dependent: :destroy
  accepts_nested_attributes_for :sought_answers, reject_if: :all_blank

  def show
    @answered_question = AnsweredQuestion.new
    @answered_question.user = current_user
    @answered_question.question = current_user.random_unanswered_question
    @answered_question.question.answers.each do |answer|
      @answered_question.sought_answers.build(answer: answer)
    end
  end

回答问题/\u form.html.erb:

<%= simple_form_for @answered_question do |aq_form| %>
  <%= aq_form.input :question_id, as: :hidden %>
  <%= @answered_question.question.body %>

  <%= aq_form.simple_fields_for @answered_question.question.answers do |answer_fields| %>
    <%= answer_fields.input :body %>
  <% end %>

  <div class='sought-answer-header'>
    People I'm most interested in would answer:
  </div>

  <%= aq_form.simple_fields_for @answered_question.sought_answers do |sa_fields| %>
    <%= sa_fields.input :answer, label_method: :body, value_method: :id, include_blank: :false, label_html: { class: 'sought-answer-body' } %>
  <% end %>

  <%= aq_form.button :submit %>
<% end %>

表单当前返回此错误：

NoMethodError in Dashboard#show

undefined method `has_attribute?' for #<Answer::ActiveRecord_Associations_CollectionProxy:0x007fd7ee8124f0>
Extracted source (around line #21):

    <%= answer_fields.input :body %>

仪表板中的命名错误显示 未定义的方法'has_attribute'# 提取的源（第21行附近）：

---

非常感谢

你好，Mark，你能在AnsweredQuestionsController中发布“new”方法的内容吗？嘿@lavilet，我添加了DashboardController#show方法，该方法在加载表单之前调用。谢谢你能提供的任何帮助！