Rails：构建多模型表单

Question

我有一个在数据库中保存一个问题和五个答案的表单，但我不知道如何保存答案，这是我的表单：我的

<%= form_for([:admin, @question]) do |f| %>

...

<%= f.fields_for :answers do |builder| %>
    <%= builder.label :answer, "Risposta", :class => "v-align" %>
    <%= builder.text_field :answer, :rows => 2 %>

    <%= builder.label :correct, "Corretta", :class => "v-align" %>
    <%= builder.check_box :correct %>
<% end %>

...

<% end %>

模型：

class Question < ActiveRecord::Base
    has_many :answers
    accepts_nested_attributes_for :answers, :reject_if => lambda { |a| a[:content].blank? }, :allow_destroy => true
    attr_accessible :answers_attributes, :quiz_id, :question, :sort_order, :point_value, :number_correct, :explanation
end

class Answer < ActiveRecord::Base
    belongs_to :question
    attr_accessible :question_id, :answer, :correct, :sort_order
end

和我的“问题”控制器：

def new
    @question = Question.new
    5.times { @question.answers.build }

    respond_to do |format|
        format.html # new.html.erb
        format.json { render :json => @question }
    end
end

def create
    @question = Question.new(params[:question])

    respond_to do |format|
        if @question.save
            format.html { redirect_to admin_question_path(@question), :notice => 'Test was successfully created.' }
            format.json { render :json => @question, :status => :created, :location => @question }
        else
            format.html { render :action => "new" }
            format.json { render :json => @question.errors, :status => :unprocessable_entity }
        end
    end  
end

我应该做什么来保存问题和数据库中的答案？

谢谢！！

Answer 1

您只会错过 Question 模型中的 accepts_nested_attributes_for :answers。

请参阅文档。

编辑：

您应该将 answers_attributes 添加到您的 attr_accessible 列表中

Answer 2

您应该看一下两个 RailsCast：

http://railscasts.com/ Episodes/196-nested-model-form-part-1 和 http://railscasts.com/episodes/197-nested-model-form-part-2

它们可能会对您有很大帮助！

这些演员背后的人 Ryan Bates 创造了一个伟大的宝石来处理嵌套形式！