Rails:将注释id与特定的Micropost id匹配

Question

目前，我有一条属于微博的评论，但问题是，当用户创建评论时，注释会用微博id存储在数据库中，但id不是针对特定的微博，而是好像评论只是将微博id增加了+ 1。非常困惑，非常感谢任何帮助。谢谢!

注释模型

class Comment < ActiveRecord::Base
  attr_accessible :content, :user_id, :micropost_id
  belongs_to :micropost
  belongs_to :user

  validates :content, presence: true, length: { maximum: 140 }


  default_scope order: 'comments.created_at DESC'
end

微柱模型

class Micropost < ActiveRecord::Base
  attr_accessible :title, :content, :view_count
  belongs_to :user
  has_many :comments
  accepts_nested_attributes_for :comments
end

注释控制器

class CommentsController < ApplicationController 
  def create
    @micropost = Micropost.find(params[:micropost_id])
    @comment = @micropost.comments.build(params[:comment])
    @comment.user_id = current_user.id
    @comment.save 
      respond_to do |format|
      format.html 
      format.js
    end
  end
end

表单

<div class="CommentField">
<%= form_for ([@micropost, @micropost.comments.new]) do |f| %>
<%= f.text_area :content, :class => "CommentText", :placeholder => "Write a Comment..." %>
<div class="CommentButtonContainer">
<%= f.submit "Comment", :class => "CommentButton b1" %>
</div>
<% end %>
</div>

路由

  resources :microposts do
    resources :comments
  end

掠行路线

micropost_comments     GET    /microposts/:micropost_id/comments(.:format)          comments#index
                       POST   /microposts/:micropost_id/comments(.:format)          comments#create
 new_micropost_comment GET    /microposts/:micropost_id/comments/new(.:format)      comments#new
edit_micropost_comment GET    /microposts/:micropost_id/comments/:id/edit(.:format) comments#edit
     micropost_comment GET    /microposts/:micropost_id/comments/:id(.:format)      comments#show
                       PUT    /microposts/:micropost_id/comments/:id(.:format)      comments#update
                       DELETE /microposts/:micropost_id/comments/:id(.:format)      comments#destroy

Answer 1

我认为这里的问题是你在这方面投入了多少精力。Rails的构建是为了了解其中的大部分内容，而不需要做您正在做的事情。我的建议是将您的评论控制器更改为这样的

class CommentsController < ApplicationController 
  def create
    @comment = Comment.new(params[:comment])
    @comment.save 
      respond_to do |format|
      format.html 
      format.js
    end
  end
end

由于您正在通过另一个分部呈现您的注释部分表单，因此您需要传递它上面关联的post的局部变量。

  "comments/form", :locals => { :micropost => micropost } %>  

你的身体就像这样

<div class="CommentField">
<%= form_for ([micropost, @comment]) do |f| %>
<%= f.text_area :content, :class => "CommentText", :placeholder => "Write a Comment..." %>
<div class="CommentButtonContainer">
<%= f.submit "Comment", :class => "CommentButton b1" %>
</div>
<% end %>
</div>

在我所有的rails应用程序中，这就是我需要做的所有关联，以使它能够自行正确地分配it。我相信这会解决问题的。