Question

我的路线看起来像这样

resources :questions do
  resources :answers do
      resources :comments
  end
end

然而，当我尝试建立评论时

 <%= form_for([@answer, @answer.comments.build]) do |f| %>

<p>
    <%= f.label :comment %>
    <%= f.text_area :comment, :cols => "50", :rows => "30"%>
</p>
<p>

我得到未定义的方法注释。这就是我的创建评论看起来像

    def create
    @answer = Answer.find(params[:answer_id])
    @comment = @answer.comments.create(params[:comment])
        redirect_to question_path(@question)
end

回答has_many评论，评论属于答案。有任何想法吗？谢谢！

Answer 1

您可以从应用中的任何控制器访问模型（只需拨打Model.class_method）

查看您的代码，我建议您这样做：

#app/views/answers/show.html.erb 
<% @answer.comments.each do |comment| %>
   <%= comment.value %>
<% end %>

<%= form_for @new_comment do |f| %>
     <%= f.text_area :comment, :cols => "50", :rows => "30"%>
<% end %>

#app/controllers/answers_controller.rb
def new
    @answer = Answer.find(params[:id])
    @new_comment = Comment.new
end


#app/controllers/comments_controller.rb
def create
    @comment = Comment.new(comment_params)
    @comment.save
end

private
def comment_params
    params.require(:comment).permit(:your, :attributes, :here)
end

如何在rails中访问双重嵌套模型？

1 个答案: