ruby-on-rails – 使用follow / unfollow按钮对用户进行分页：由

我的users / show.html.erb页面正常工作,因为每个页面上只显示一个类名.当用户在users / index.html.erb中以及follow / unfollow按钮进行分页时,关系/ js.create.erb和relationship / js.destroy.erb会变得很古怪,因为页面上有重复的类名,(第一个分页)用户更新,无论跟随/取消关注哪个用户,这仅在刷新页面时自行修复(实际模型仍能正常工作)).

我没有在users / index.html.erb中使用unfollow / follow partials,因为index.html.erb中没有@user变量,它对@users进行了分页,所以我使用了user.id.

class RelationshipsController < ApplicationController
before_action :logged_in_user

def create
  @user = User.find(params[:followed_id])
    current_user.follow(@user)
    respond_to do |format|
      format.html { redirect_to @user }
      format.js
    end
  end

  def destroy
    @user = Relationship.find(params[:id]).followed
    current_user.unfollow(@user)
    respond_to do |format|
      format.html { redirect_to @user }
      format.js
    end
  end
end

**relationships/create.js.erb**
$("#follow_form").html("<%= escape_javascript(render('users/unfollow')) %>");
$("#followers").html('<%= @user.followers.count %> <br> followers');

**relationships/destroy.js.erb**
$("#follow_form").html("<%= escape_javascript(render('users/follow')) %>");
$("#followers").html('<%= @user.followers.count %> <br> followers');

**users/index.html.erb** 
<div class="row community">
  <% @users.in_groups_of(3,false).each do |users| %>
    <div class="col-sm-12">
      <% users.each do |user| %>
            <ul class="name-head">
              <% unless current_user == user %>
                <div id="follow_form">
                  <% if current_user.following?(user) %>
                    <%= form_for(current_user.active_relationships.find_by(followed_id: user.id),html: { method: :delete },remote: true) do |f| %>
                        <%= f.submit "Unfollow",class: "btn btn-primary" %>
                    <% end %>
                  <% else %>
                    <%= form_for(current_user.active_relationships.build,remote: true) do |f| %>
                      <div><%= hidden_field_tag :followed_id,user.id %></div>
                      <%= f.submit "Follow",class: "btn btn-primary" %>
                    <% end %>
                  <% end %>
                </div>
              <% end %>
            </ul>
          <div class="col-xs-12">
          <div class="col-xs-4">
            <a href="<%= following_user_path(user.id) %>">
              <center><strong id="following" class:"stat">
              <%= user.following.count %><br>
              following
              </strong></center>
            </a>  
          </div>
          <div class="col-xs-4">
            <a href="<%= followers_user_path(user.id) %>">
              <center><strong id="followers" class="stat">
                <%= user.followers.count %><br>
                followers
              </strong></center>
            </a>
          </div>
          <div class="col-xs-4">
              <center><strong id="photo-count" class="stat">
                <%= user.photos.count %><br>
              photos shared
              </strong></center>
          </div>
        </div>
        </div>  
      <% end %>
    </div>  
  <% end %>
</div>
<%= will_paginate %>

**users/show.html.erb** 
.
.
.
      <li class="follow">
        <%= render 'follow_form' if logged_in? %>
      </li>
    </ul>
  </div>
  <div class="col-xs-12">
    <div class="col-xs-4">
      <a href="<%= following_user_path(@user) %>">
        <center><strong id="following" class:"stat">
        <%= @user.following.count %><br>
        following
        </strong></center>
      </a>  
    </div>
    <div class="col-xs-4">
      <a href="<%= followers_user_path(@user) %>">
        <center><strong id="followers" class="stat">
          <%= @user.followers.count %><br>
        followers
        </strong></center>
      </a>
    </div>
    <div class="col-xs-4">
        <center><strong id="photo-count" class="stat">
          <%= @user.photos.count %><br>
        photos shared
        </strong></center>
    </div>
end

**_follow_form.html.erb**
<% unless current_user?(@user) %>
  <div id="follow_form">
  <% if current_user.following?(@user) %>
    <%= render 'unfollow' %>
  <% else %>
    <%= render 'follow' %>
  <% end %>
  </div>
<% end %>

**_follow.html.erb**
<%= form_for(current_user.active_relationships.build,remote: true) do |f| %>
  <div><%= hidden_field_tag :followed_id,@user.id %></div>
  <%= f.submit "Follow",class: "btn btn-primary" %>
<% end %>

**_unfollow.html.erb**
<%= form_for(current_user.active_relationships.find_by(followed_id: @user.id),remote: true) do |f| %>
   <%= f.submit "Unfollow",class: "btn btn-primary" %>
 <% end %>

编辑：我考虑过将user_id传递给类,例如：

<div id="follow_form<%="#{user.id}"%>"> 

which created <div id="follow3">

但是我不知道如何将它传递给destroy.js.erb和create.js.erb

I have tried many combinations such as:

 $("#follow_form<%="#{user.id}"%>").html("<%= escape_javascript(render('users/unfollow')) %>");

和

$("#follow_form<%= @user.id%>").html("<%= escape_javascript(render('users/unfollow')) %>");

但是,代码仍然不起作用,即使它确实如此,它仍然需要工作,因为更改create / destroy.js.erb文件会破坏users / show.html.erb跟随/取消关注按钮.

编辑：我也发现这个question是相似的,但它不包含已接受的答案.

编辑Heroku日志：这是我在users / index.html.erb页面上关注/取消关注用户时获得的内容：

Started DELETE "/relationships/360" for 184.90.97.154 at 2016-05-13 20:05:17 +0000
Processing by RelationshipsController#destroy as JS
Rendered users/_follow.html.erb (1.6ms)
 (1.1ms)[0m  [1mSELECT COUNT(*) FROM "users" INNER JOIN "relationships" ON "users"."id" = "relationships"."follower_id" WHERE "relationships"."followed_id" = $1[0m  [["followed_id",1]]

Started POST "/relationships" for 184.90.97.154 at 2016-05-13 20:07:26 +0000
Processing by RelationshipsController#create as JS
[1m[36m (1.5ms)[0m  [1mCOMMIT[0m

<ul class="name-head">
  <% unless current_user == user %>
     <%= render partial: 'follow_form',locals: { user: user } %>
  <% end %>
</ul>

<div id="follow_form-<%= user.id %>">
  <% if current_user.following?(user) %>
    <%= render partial: 'unfollow',locals: { user: user } %>
  <% else %>
   <%= render partial: 'follow',locals: { user: user } %>
  <% end %>
</div>

<%= form_for(current_user.active_relationships.find_by(followed_id: user.id),remote: true) do |f| %>
    <%= f.submit "Unfollow",class: "btn-default" %>
<% end %>

<%= form_for(current_user.active_relationships.build,remote: true) do |f| %>
    <div><%= hidden_field_tag :followed_id,user.id %></div>
    <%= f.submit "Follow",class: "btn" %>  
<% end %>

$("#follow_form-<%= @user.id %>").html("<%= escape_javascript(render(partial: 'users/unfollow',locals: { user: @user })) %>");

$("#follow_form-<%= @user.id %>").html("<%= escape_javascript(render(partial: 'users/follow',locals: { user: @user })) %>");