current_user和帖子的評論 - 創建另一個關聯或循環帖子？ - Ruby on Rails

Question

我已經使用Ruby on Rails創建了一個博客應用程序，並且剛剛添加了一個身份驗證部分，並且它工作得很好。我現在正試圖通過我的應用程序來調整代碼，使其僅顯示與某個用戶相關的信息。

當前，用戶has_many :posts和Posts has_many :comments。

創建帖子時，我成功地將user_id插入到帖子表中。此外，我成功地僅在/views/posts/index.html.erb視圖中顯示屬於特定用戶的帖子。我的問題是與評論。

例如，在主頁上登錄時，用戶將只能看到他們寫的帖子，而只能看到所有帖子上所有用戶的評論。這不是我想要的，需要一些方向來糾正。我只想顯示寫在所有登錄用戶帖子上的評論。

我是否需要創建關聯以使評論也屬於用戶？或者是否有一種方法可以調整我的代碼以簡單地循環顯示這些數據。

我已經把PostsController，CommentsController和/posts/index.html.erb的代碼放在下面，還有我的視圖代碼，但是如果需要的話會發布更多的代碼。

class PostsController < ApplicationController 

    before_filter :authenticate 

    auto_complete_for :tag, :tag_name 
    auto_complete_for :ugtag, :ugctag_name 

    def index 
    @tag_counts = Tag.count(:group => :tag_name, 
     :order => 'count_all DESC', :limit => 20) 
     conditions, joins = {}, :votes 

    @ugtag_counts = Ugtag.count(:group => :ugctag_name, 
     :order => 'count_all DESC', :limit => 20) 
     conditions, joins = {}, :votes 

    @vote_counts = Vote.count(:group => :post_title, 
      :order => 'count_all DESC', :limit => 20) 
      conditions, joins = {}, :votes 


     unless(params[:tag_name] || "").empty? 
     conditions = ["tags.tag_name = ? ", params[:tag_name]] 
     joins = [:tags, :votes] 
     end 
     @posts= current_user.posts.paginate(
       :select => "posts.*, count(*) as vote_total", 
       :joins => joins, 
       :conditions=> conditions, 
       :group => "votes.post_id, posts.id ", 
       :order => "created_at DESC", 
       :page => params[:page], :per_page => 5) 
     @popular_posts=Post.paginate(
       :select => "posts.*, count(*) as vote_total", 
       :joins => joins, 
       :conditions=> conditions, 
       :group => "votes.post_id, posts.id", 
       :order => "vote_total DESC", 
       :page => params[:page], :per_page => 3) 

    respond_to do |format| 
     format.html # index.html.erb 
     format.xml { render :xml => @posts } 
     format.json { render :json => @posts } 
     format.atom 
    end 
    end 

    def show 
    @post = Post.find(params[:id]) 


    respond_to do |format| 
     format.html # show.html.erb 
     format.xml { render :xml => @post } 
    end 
    end 

    def new 
    @post = Post.new 

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

    def edit 
    @post = Post.find(params[:id]) 
    end 

    def create 
    @post = current_user.posts.create(params[:post]) 

    respond_to do |format| 
     if @post.save 
     flash[:notice] = 'Post was successfully created.' 
     format.html { redirect_to(@post) } 
     format.xml { render :xml => @post, :status => :created, :location => @post } 
     else 
     format.html { render :action => "new" } 
     format.xml { render :xml => @post.errors, :status => :unprocessable_entity } 
     end 
    end 
    end 

    def update 
    @post = Post.find(params[:id]) 

    respond_to do |format| 
     if @post.update_attributes(params[:post]) 
     flash[:notice] = 'Post was successfully updated.' 
     format.html { redirect_to(@post) } 
     format.xml { head :ok } 
     else 
     format.html { render :action => "edit" } 
     format.xml { render :xml => @post.errors, :status => :unprocessable_entity } 
     end 
    end 
    end 


    def destroy 
    @post = Post.find(params[:id]) 
    @post.destroy 


    respond_to do |format| 
     format.html { redirect_to(posts_url) } 
     format.xml { head :ok } 
    end 
    end 
end 

CommentsController

class CommentsController < ApplicationController 

    before_filter :authenticate, :except => [:show, :create] 

    def index 

    @comments = Comment.find(:all, :include => :post, :order => "created_at DESC").paginate :page => params[:page], :per_page => 5 

    respond_to do |format| 
     format.html # index.html.erb 
     format.xml { render :xml => @comments } 
     format.json { render :json => @comments } 
     format.atom 
    end 
    end 

    def show 
    @comment = Comment.find(params[:id]) 

    respond_to do |format| 
     format.html # show.html.erb 
     format.xml { render :xml => @comment } 
    end 
    end 

    # GET /posts/new 
    # GET /posts/new.xml 

    # GET /posts/1/edit 
    def edit 
    @comment = Comment.find(params[:id]) 
    end 

    def update 
    @comment = Comment.find(params[:id]) 

    respond_to do |format| 
     if @comment.update_attributes(params[:comment]) 
     flash[:notice] = 'Comment was successfully updated.' 
     format.html { redirect_to(@comment) } 
     format.xml { head :ok } 
     else 
     format.html { render :action => "edit" } 
     format.xml { render :xml => @comment.errors, :status => :unprocessable_entity } 
     end 
    end 
    end 


def create 
    @post = Post.find(params[:post_id]) 
    @comment = @post.comments.build(params[:comment]) 

    respond_to do |format| 
    if @comment.save 
     flash[:notice] = "Thanks for adding this comment" 
     format.html { redirect_to @post } 
     format.js 
    else 
     flash[:notice] = "Make sure you include your name and a valid email address" 
     format.html { redirect_to @post } 


    end 
end 
end 







def destroy 
    @comment = Comment.find(params[:id]) 
    @comment.destroy 



    respond_to do |format| 
     format.html { redirect_to Post.find(params[:post_id]) } 
     format.js 

    end 
    end 

end 

查看代碼註釋

<% Comment.find(:all, :order => 'created_at DESC', :limit => 3).each do |comment| -%> 
       <div id="side-bar-comments"> 
        <p> 
         <div class="small"><%=h comment.name %> commented on:</div> 
         <div class="dark-grey"><%= link_to h(comment.post.title), comment.post %><br/></div> 
         <i><%=h truncate(comment.body, :length => 100) %></i><br/> 
         <div class="small"><i> <%= time_ago_in_words(comment.created_at) %> ago</i></div> 
        </p> 
       </div> 
      <% end -%> 

Answer 1

我相信你可以設置另一個關係上user模型

has_many :comments, :through => :posts 

，然後用戶@user.comments。

Answer 2

首先，不要亂搞MVC。行：

Comment.find(:all, :order => 'created_at DESC', :limit => 3) 

應該在控制器：

@comments = Comment.find(:all, :order => 'created_at DESC', :limit => 3) 

，並考慮：

<% @comments.each do |comment| %> 

用諧音

甚至更​​好：

<%= render :partial => "comment_item", :collection => @comments %> 

它會遍歷所有@comments。

接下來，如果要顯示分配給某個帖子的所有評論，那麼關係帖子has_many註釋就足夠了。如果你想顯示只有current_user發佈，那麼所有你的意見應該有user_id現場填寫意見

# controller 
@posts = current_user.posts(:include => :comments) 

# view 
<% @posts.each do |post| %> 
    <%=h post.title %> - Comments: <br /> 
    <% post.comments.each do |comment| %> 
    <%=h comment.body %> 
    <% end %> 
<% end %> 

：像這樣使用。並以與顯示用戶帖子相同的方式使用它。