Rails 4 nested form not saving -


i have scoured other questions relating topic here, still having problem. have nested form inside nested form. answer choices inside questions inside survey. had no problem setting questions, , save fine. answer choices, though, not saving, , cannot figure out going wrong.

survey.rb

class survey < activerecord::base   belongs_to :author   has_many :questions, dependent: :destroy   has_many :forms, dependent: :destroy   has_many :answer_choices, through: :question    validates :name, uniqueness: true    accepts_nested_attributes_for :questions, reject_if: proc { |attributes| attributes['text'].blank?},   allow_destroy: true end

question.rb

class question < activerecord::base   belongs_to :survey   has_many :responses, dependent: :destroy   has_many :answer_choices, dependent: :destroy   accepts_nested_attributes_for :answer_choices, reject_if: proc { |attributes| attributes['content'].blank?},   allow_destroy: true  end

answer_choice.rb

class answerchoice < activerecord::base   belongs_to :question end

survey_controller.rb

  def new     @survey = survey.new(author_id: session[:user_id])     @survey.questions.build     @survey.questions.each { |question| 4.times { question.answer_choices.build }}   end    def edit     @survey.questions.build     @survey.questions.each { |question| 4.times { question.answer_choices.build }}   end  def survey_params   params.require(:survey).permit(:name, :description, :author_id,       questions_attributes: [:id, :text, :required, :response_type,       :_destroy, :number]) end

_form.html.erb

<%= form_for(@survey) |f| %>   <% if @survey.errors.any? %>     <div id="error_explanation">       <h2><%= pluralize(@survey.errors.count, "error") %> prohibited survey being saved:</h2>        <ul>       <% @survey.errors.full_messages.each |message| %>         <li><%= message %></li>       <% end %>       </ul>     </div>   <% end %>    <div class="field">     <%= f.label :name %><br>     <%= f.text_field :name %>   </div>   <div class="field">     <%= f.label :description %><br>     <%= f.text_field :description %>   </div>   <div class="field">     <%= f.hidden_field :author_id %>   </div>    <h2>questions</h2>   <%= f.fields_for(:questions) |ff| %>     <%= render 'questions', :f => ff %>   <% end %>   <div class="actions">     <%= f.submit 'submit question'%>   </div>    <div class="actions">     <%= link_to 'finish survey', surveys_path %>   </div>  <% end %>

_questions.html.erb

<div>   <span><%= f.index + 1 %>. </span>   <div class="field">     <%= f.hidden_field :number, value: f.index + 1 %>   </div>   <div class="field">     <%= f.label :text, "question" %><br>     <%= f.text_field :text %>   </div>   <div class="field">     <%= f.label :response_type %><br>     <%= f.select :response_type, [["yes/no", "yes/no"], ["short answer", "string"], ["long answer", "text"], ["multiple choice", "multi"]] %>   </div>   <div class="field">     <%= f.label :required %>     <%= f.check_box :required %>   </div> <div>   <p>answer choices</p>   <%= f.fields_for(:answer_choices) |ff| %>     <%= render 'answer_choices', :f => ff %>   <% end %> </div>   <div class="field">     <%= f.label :_destroy %>     <%= f.check_box :_destroy %>   </div> </div>

_answer_choices.html.erb

<div class="field">   <%= f.label :content %><br>   <%= f.text_field :content %> </div> <div class="field">   <%= f.label :_destroy %>   <%= f.check_box :_destroy %> </div>

a few changes in code.

change new method 

def new     @survey = survey.new(author_id: session[:user_id])     @questions = @survey.questions.build     @answer_choices = 4.times { @questions.answer_choices.build }   end

your survey_params should this

def survey_params   params.require(:survey).permit(:name, :description, :author_id,       questions_attributes: [:id, :text, :required, :response_type,       :_destroy, :number, answer_choices_attributes: [:id,:content,:_destroy]]) end

and in form code, change these lines

<%= f.fields_for(:questions) |ff| %> <%= f.fields_for(:answer_choices) |ff| %>

into 

<%= f.fields_for @questions |ff| %> <%= f.fields_for @answer_choices |ff| %>

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