通过复杂的关联返回从记录消除CURRENT_USER活动 [英] Eliminating current_user activity from records being returned through a complex association

问题描述

我已经建立了一个Ruby on Rails应用程序（Rails的2.3.9），允许用户跟踪训练。锻炼创建后其他用户可以对锻炼发表评论。我现在工作的控制台索引视图，显示最近的活动。

I have built a Ruby on Rails application (Rails 2.3.9) that allows users to track workouts. After a workout is created other users can comment on that workout. I am now working on the Dashboard index view to display recent activity.

在这个特殊的部分，我想显示所有在该锻炼CURRENT_USER 的评论意见。我成功地拉这些意见，命令他们，并限制通过以下code的输出。

In this particular section I am trying to display comments from all on workouts that current_user has commented on. I am successfully pulling those comments, ordering them, and limiting the output through the below code.

我现在想排除从当前用户的意见。这里是code：

I am now trying to exclude comments from current user. Here is the code:

/views/dashboard/index.html.erb

/views/dashboard/index.html.erb

  <% unless current_user.comment_stream.blank? %>
      <h3>Recent Comments from WODs you commented on</h3>
        <% current_user.comment_stream[0,10].each do |comment| %>
          <p>
             Comment from <%= link_to (comment.user.username), comment.user %> 
             <%= time_ago_in_words(comment.created_at) %> ago on Workout: 
             <%= link_to (comment.workout.title), comment.workout %>
          </p>
        <% end %>
  <% end %>

User.rb

User.rb

  def workouts_on_which_i_commented
    comments.map{|x|x.workout}.uniq
  end

  def comment_stream
   workouts_on_which_i_commented.map do |w|
     w.comments
   end.flatten.sort{|x,y| y.created_at <=> x.created_at}
  end

问题的示例

下面是一个什么与此code发生了一个例子：

Here is an example of what happens with this code:

用户A创建上有一个锻炼和用户B的意见。然后，用户C和用户D还对用户A的训练发表评论。在用户B的仪表板视图，我希望他看到从活动流中用户C和用户D的评论......但我不想让他看到了自己的意见。

User A creates a workout and User B comments on it. Then User C and User D also comment on User A's workout. In User B's dashboard view, I want him to see comments from User C and User D in the activity stream...but I don't want him to see his own comments.

我可以简单地使用＆LT;％，除非comment.user_id == current_user.id％GT; 但食堂被显示为这些记录的数量捕捞之前排除线。

I could simply use a <% unless comment.user_id == current_user.id %> but that messes up the number of records being displayed as those are fished prior to the exclusion line.

推荐答案

在comment_stream，您可以添加过滤掉你发布

In comment_stream, you can add filter out the comments you posted

def comment_stream
  workouts_on_which_i_commented.map do |w|
    w.comments
  end.flatten.reject{|c| c.user_id == current_user.id}.sort{|x,y| y.created_at <=> x.created_at}
end

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