Question

我正在使用acts_as_votable gem根据用户获得的多少票数来订购我的链接。

我在视图中使用了一个.each迭代器来处理排序，它工作正常：

@ links.order（cached_votes_up :: desc）.each do | link |

但是现在我试图在我的控制器中包含订购功能，但它无法正常工作。我尝试了几种不同的方式：

class LinksController < ApplicationController
  before_filter :authenticate_user!, except: [:index, :show]

  def index
    @links = Link.order(cached_votes_up: :desc)
    @links = Link.paginate(page: params[:page], per_page: 5)

    respond_to do |format| 
      format.js
      format.html
    end
  end
end

    class LinksController < ApplicationController
      before_filter :authenticate_user!, except: [:index, :show]

      def index
        @links = Link.order(cached_votes_up: :desc).paginate(page: params[:page], per_page: 5)

        respond_to do |format| 
          format.js
          format.html
        end
      end
end


class LinksController < ApplicationController
  before_filter :authenticate_user!, except: [:index, :show]

  def index
    @links = Link.order(cached_votes_up: :desc)
    @links.paginate(page: params[:page], per_page: 5)

    respond_to do |format| 
      format.js
      format.html
    end
  end
end

我的_link部分：

<div class="link row clearfix">
    <h2>
      <%= image_tag link.avatar.thumb %>
    </h2>
    <h2>
      <%= link_to link.title, link %><br>
    </h2>
    <p>
      <%= link_to link.url, link %><br>
    </p>


<!-- acts_as_votable for like_link -->
    <div class="btn-group">
        <%= link_to like_link_path(link), method: :put, class: "btn btn-default btn-sm" do %>
          <span class="glyphicon glyphicon-chevron-up"></span>
          Upvote
          <%= link.get_upvotes.size %>
        <% end %>
        <%= link_to dislike_link_path(link), method: :put, class: "btn btn-default btn-sm" do %>
          <span class="glyphicon glyphicon-chevron-down">
          Downvote
          <%= link.get_downvotes.size %>
        <% end %>
    </div>
</div>

index.html.erb：

<div id="link"><%= render @links %></div>

<%= will_paginate @links %>

有谁看到问题可能是什么或我可能做错了什么？

这是我运行Link.order(cached_votes_up: :desc)时的输出。即使我对这篇文章进行了投票，它仍然将对象作为包含upvote的对象返回？

irb(main):001:0> @link = Link.order(cached_votes_up: :desc).first
  Link Load (2.0ms)  SELECT  "links".* FROM "links"  ORDER BY "links"."cached_votes_up" DESC LIMIT 1
=> #<Link id: 16, title: "John F Kennedy", url: "Change is the law of life. And those who look only...", created_at: "2015-12-26 23:56:26", updated_at: "2015-12-26 23:56:31", user_id: nil, cached_votes_total: 1, cached_votes_score: 1, cached_votes_up: 1, cached_votes_down: 0, avatar: "jfk.jpeg">

这是包含acts_as_votable对象的链接模型：

class Link < ActiveRecord::Base
    self.per_page = 5
    belongs_to :user
    validates :user, presence: true
    acts_as_votable
    attr_accessor :avatar
    mount_uploader :avatar, AvatarUploader
end

这是我的路线档案：

Rails.application.routes.draw do
  devise_for :users
  resources :users
  resources :links do
    member do
      put "like", to: "links#upvote"
      put "dislike", to: "links#downvote"
    end
  end
  root to: "links#index"

这些是我的downvote和upvote行动：

  def upvote
    @link = Link.find(params[:id])
    @link.upvote_by current_user
    redirect_to :back
  end

  def downvote
    @link = Link.find(params[:id])
    @link.downvote_from current_user
    redirect_to :back
  end

Answer 1

请试试这个：

class LinksController < ApplicationController
  before_filter :authenticate_user!, except: [:index, :show]
  def index 
    ordered_links = Link.order(cached_votes_up: :desc)
    @links = ordered_links.paginate(page: params[:page], per_page: 5)

    respond_to do |format| 
      format.js
      format.html
    end
  end
end

Answer 2

由于您在评论中说您实际上在注册downvote时遇到了问题，这可能会对您有所帮助

根据acts_as_votable gem docs

默认情况下，所有投票都是正面的

所以

@post.vote_by :voter => @user3

实际上是一个积极的投票。要投票，你需要做这样的事情......

@post.vote_by :voter => @user4, :vote => 'bad'

或者

@post.downvote_from @user2

基于控制器

2 个答案: