Ruby on rails 印象派多数作品不起作用

在我的应用程序中，我无法用印象派gem检索到大多数被浏览的帖子。在正常的页面浏览中，一切都正常。 我在另一个应用程序上试用过，效果很好。这两个应用程序之间的唯一区别是，一个有效的应用程序使用SQLITE，而另一个使用PG

我通过安装gem实现了它，我生成了表migration

railsgimpressionister

，并将印象计数添加到帖子中

rails g migration add_impressions_count_to_posts impressions_count:integer

将此添加到Post.rb

is_impressionable :counter_cache => true

及

将此添加到show action中的posts_controller.rb

@most_viewed = Post.order('impressions_count DESC').take(20)

以下是我的邮政管理员代码：

class PostsController < ApplicationController
  before_action :redirect_if_not_signed_in, only: [:new, :edit, :destroy, :interests_feed]
  before_action :find_post, only: [:show, :edit, :update, :destroy]
  before_action :find_category
  before_action :find_contacts
  before_action :set_actions
  impressionist :actions=>[:show,:index]

  def show
    if user_signed_in?
      @message_has_been_sent = conversation_exist?
    end
    impressionist(@post)
    @most_viewed = Post.order('impressions_count DESC').take(10)
  end

  def new
    @branch = params[:branch]
    @categories = Category.where(branch: @branch)
    @post = Post.new
  end

  def create
    @post = Post.new(post_params)
    if @post.save 
      redirect_to post_path(@post) 
    else
      redirect_to root_path
    end
  end

  def edit
    @categories = Category.all.map{ |c| [c.name, c.id] }
  end

  def update
    if @post.update(post_params)
      redirect_to post_path(@post)
    else
      render 'edit'
    end
  end

  # DELETE /stories/1
  # DELETE /stories/1.json
  def destroy
    @post.destroy
    respond_to do |format|
      format.html { redirect_to root_path, notice: 'post was successfully deleted.' }
      format.json { head :no_content }
    end
  end

  def hobby
    impressionist(@post)
    posts_for_branch(params[:action])
  end

  def study
    posts_for_branch(params[:action])
  end

  def team
    posts_for_branch(params[:action])
  end

  def interests_feed
    @my_interests = current_user.tag_ids
    @posts = Post.select { |p| (p.tag_ids & @my_interests).any? }
  end

  def most_viewed
    @most_viewed = Post.order('impressions_count DESC').take(20)
    @categories = Category.where(branch: @branch)
  end

  def saved_questions
    @saved_questions = current_user.saved_questions
  end

  private

  def conversation_exist?
    Private::Conversation.between_users(current_user.id, @post.user.id).present?
  end

  def post_params
    params.require(:post).permit(:content, :title, :category_id, :tag_list, tag_ids: [])
                         .merge(user_id: current_user.id)
  end

  def find_post
    @post = Post.includes(:tags).find(params[:id])
  end

  def find_category
    @categories = Category.where(branch: @branch)
  end

  def find_contacts
    @contacts = user_signed_in? ? current_user.all_active_contacts : ''
  end

  def posts_for_branch(branch)
    @categories = Category.where(branch: branch)
    @posts = get_posts.paginate(page: params[:page])
    @most_viewed = Post.order('impressions_count DESC').take(20)
    respond_to do |format|
      format.html
      format.js { render partial: 'posts/posts_pagination_page' }
    end
  end

  def get_posts
    PostsForBranchService.new({
      search: params[:search],
      category: params[:category],
      branch: params[:action]
    }).call
  end

  def set_actions
    if user_signed_in?
      @saved_questions = current_user.saved_questions
    end
  end

end

---

你使用的是什么版本的宝石？就像这个宝石“印象派”你在控制器中添加了

impressionist

？是的<代码>印象派：actions=>[：show，：index]在顶部和

@most\u view=Post.order（'impressions\u count DESC'）。在show action中取（20）

。然后运行…

rails g impressive

，相应的表将显示在您的模式文件中（如gem文档所示？）…如果是这样，请将其添加到原始问题中，以及控制器代码…添加到原始帖子中（不在评论中）

class PostsController < ApplicationController
  before_action :redirect_if_not_signed_in, only: [:new, :edit, :destroy, :interests_feed]
  before_action :find_post, only: [:show, :edit, :update, :destroy]
  before_action :find_category
  before_action :find_contacts
  before_action :set_actions
  impressionist :actions=>[:show,:index]

  def show
    if user_signed_in?
      @message_has_been_sent = conversation_exist?
    end
    impressionist(@post)
    @most_viewed = Post.order('impressions_count DESC').take(10)
  end

  def new
    @branch = params[:branch]
    @categories = Category.where(branch: @branch)
    @post = Post.new
  end

  def create
    @post = Post.new(post_params)
    if @post.save 
      redirect_to post_path(@post) 
    else
      redirect_to root_path
    end
  end

  def edit
    @categories = Category.all.map{ |c| [c.name, c.id] }
  end

  def update
    if @post.update(post_params)
      redirect_to post_path(@post)
    else
      render 'edit'
    end
  end

  # DELETE /stories/1
  # DELETE /stories/1.json
  def destroy
    @post.destroy
    respond_to do |format|
      format.html { redirect_to root_path, notice: 'post was successfully deleted.' }
      format.json { head :no_content }
    end
  end

  def hobby
    impressionist(@post)
    posts_for_branch(params[:action])
  end

  def study
    posts_for_branch(params[:action])
  end

  def team
    posts_for_branch(params[:action])
  end

  def interests_feed
    @my_interests = current_user.tag_ids
    @posts = Post.select { |p| (p.tag_ids & @my_interests).any? }
  end

  def most_viewed
    @most_viewed = Post.order('impressions_count DESC').take(20)
    @categories = Category.where(branch: @branch)
  end

  def saved_questions
    @saved_questions = current_user.saved_questions
  end

  private

  def conversation_exist?
    Private::Conversation.between_users(current_user.id, @post.user.id).present?
  end

  def post_params
    params.require(:post).permit(:content, :title, :category_id, :tag_list, tag_ids: [])
                         .merge(user_id: current_user.id)
  end

  def find_post
    @post = Post.includes(:tags).find(params[:id])
  end

  def find_category
    @categories = Category.where(branch: @branch)
  end

  def find_contacts
    @contacts = user_signed_in? ? current_user.all_active_contacts : ''
  end

  def posts_for_branch(branch)
    @categories = Category.where(branch: branch)
    @posts = get_posts.paginate(page: params[:page])
    @most_viewed = Post.order('impressions_count DESC').take(20)
    respond_to do |format|
      format.html
      format.js { render partial: 'posts/posts_pagination_page' }
    end
  end

  def get_posts
    PostsForBranchService.new({
      search: params[:search],
      category: params[:category],
      branch: params[:action]
    }).call
  end

  def set_actions
    if user_signed_in?
      @saved_questions = current_user.saved_questions
    end
  end

end

class Post < ApplicationRecord
  belongs_to :user
  belongs_to :category

  is_impressionable :counter_cache => true

  Post.order('impressions_count DESC')

  validates :title, presence: true, length: { minimum: 5, maximum: 255 }
  validates :content, presence: true, length: { minimum: 20, maximum: 1000 }
  validates :category_id, presence: true

  default_scope -> { includes(:user).order(created_at: :desc) }

  scope :by_category, -> (branch, category_name) do 
    joins(:category).where(categories: {name: category_name, branch: branch}) 
  end

  scope :by_branch, -> (branch) do
    joins(:category).where(categories: {branch: branch}) 
  end

  scope :search, -> (search) do
    where("title ILIKE lower(?) OR content ILIKE lower(?)", "%#{search}%", "%#{search}%")
  end

  scope :most_recent, -> { order(created_at: :desc) }

  has_many :taggings
  has_many :tags, through: :taggings
  has_many :comments, as: :commentable, dependent: :destroy
  has_many :upvotes, dependent: :destroy
  has_many :save_questions, dependent: :destroy

  def tag_list
    self.tags.collect do |tag|
      tag.name
    end.join(", ")
  end

  def tag_list=(tags_string)
    tag_names = tags_string.split(",").collect{|s| s.strip.downcase}.uniq
    new_or_found_tags = tag_names.collect { |name| Tag.friendly.find_or_create_by(name: name) }
    self.tags = new_or_found_tags
  end

  def related_posts
      Post.joins(:tags).where(tags: { id: self.tags.pluck(:id) }).where.not(id: self.id)
  end

end

<div id="single-post-content" class="container">
  <div class="row">
    <div class="col-sm-8 bg-white">
      <h1><%= @post.title %></h1>
      <hr class="custom-hr">
      <% unless @post.tags.blank? %>
        <p>
          <span>
              Tags:
              <% @post.tags.each do |tag| %>
                <%= link_to tag.name, tag_path(tag), class: "button button_highlight" %>
              <% end %>
          </span>
          </p>
      <% end %>

      <p>
        <span class="text-muted">Asked on <%= @post.created_at.strftime('%-d %B %Y')%> ago by <%= link_to @post.user.name, profile_path(@post.user.name) %> <%= link_to (image_tag @post.user.avatar.url(:comment), class: "img-circle"), profile_path(@post.user.name) %></span> | <span class="text-muted"><%= pluralize(@post.comments.count, "Responses") %></span> | <span class="text-muted"><%= pluralize(@post.impressionist_count, "View") %></span>

        <span id="post_<%= @post.id %>_save_questions">
          <%= render partial: "save_questions", locals: {post: @post} %>
        </span>

      </p>

      <p id="post_<%= @post.id %>_upvotes">
        <%= render partial: "upvotes", locals: {post: @post} %>
      </p>

      <hr class="custom-hr">

      <p><%= sanitize @post.content %></p>

      <% if user_signed_in? %>
        <% if @post.user_id == current_user.id %>
          <span><%= link_to 'Edit Question', edit_post_path(@post), class: "btn btn-warning btn-sm" %></span>
          <span><%= link_to 'Delete Question', @post, method: :delete, data: { confirm: 'Are you sure?' }, class: "btn btn-danger btn-sm" %></span>
        <% end %>
      <% end %>

      <hr class="custom-hr">

      <div>
        <p><b>Note:</b> This user doesn't know if you're sending this D.M as a response to a question. so your DM could be in this format <i>"As a response to "Are you a male?", Yes, I am.</i></p>

        <%= link_to 'Send your response as a private message', open_private_conversation_path(id: @post.user.id), remote: true, method: :post, class: 'bigger-screen-link btn btn-primary btn-sm' %>

        <%= link_to 'Send your response as a private message', open_messenger_path(id: @post.user.id, smaller_device: true, type: 'private'), class: 'smaller-screen-link btn btn-primary btn-sm' %>
      </div>

      <p>Or write a public response below.</p>

      <br>
      <div>
        <%= render "comments/widget", commentable: @post %>
      </div>
    </div>

    <div class="col-sm-4">
      <h4>Quick Navigation</h4>

      <div class="list-group">
        <%= link_to 'My Interests', my_interests_path, class: "list-group-item" %>
        <%= link_to 'Trending', trending_path, class: "list-group-item" %>
        <a href="#" class="list-group-item">Hot</a>
        <%= link_to '20 Most Viewed', most_viewed_path, class: "list-group-item" %>
        <a href="#" class="list-group-item">Unanswered</a>
        <a href="#" class="list-group-item">From Friends</a>
      </div>

      <h4>Related Questions</h4>
      <hr class="custom-hr">
      <% unless @post.related_posts.blank? %>
        <ol>
          <% @post.related_posts.most_recent.limit(10).reject { |p| p.id == @post.id }.each do |post| %>
            <li><%= link_to post.title, post_path(post.id) %></li>
          <% end %>
        </ol>
      <% else %>
        <p class="text-warning">This question is not related to others.</p>
      <% end %>

      <br>

      <div class="">
        <h4>20 Most Viewed in this Directory.</h4>
        <ol>
          <% @most_viewed.each do |post| %>
            <li><%= link_to post.title, post_path(post.id) %> (<%= post.impressionist_count %> Views) </li>
          <% end %>
        </ol>
      </div>

      <br>

      <% unless @post.category.blank? %>

        <h4>More in Questions <%= link_to @post.category.name, posts_path(branch: @post.category.name) %></h4>
        <hr class="custom-hr">
        <ol>
          <% @post.category.posts.most_recent.limit(11).reject { |p| p.id == @post.id }.each do |post| %>
            <li><%= link_to post.title, post_path(post.id) %></li>
          <% end %>
        </ol>
      <% end %>

    </div>
  </div><!-- row -->
</div>

create_table "impressions", force: :cascade do |t|
    t.string "impressionable_type"
    t.integer "impressionable_id"
    t.integer "user_id"
    t.string "controller_name"
    t.string "action_name"
    t.string "view_name"
    t.string "request_hash"
    t.string "ip_address"
    t.string "session_hash"
    t.text "message"
    t.text "referrer"
    t.text "params"
    t.datetime "created_at", null: false
    t.datetime "updated_at", null: false
    t.index ["controller_name", "action_name", "ip_address"], name: "controlleraction_ip_index"
    t.index ["controller_name", "action_name", "request_hash"], name: "controlleraction_request_index"
    t.index ["controller_name", "action_name", "session_hash"], name: "controlleraction_session_index"
    t.index ["impressionable_type", "impressionable_id", "ip_address"], name: "poly_ip_index"
    t.index ["impressionable_type", "impressionable_id", "params"], name: "poly_params_request_index"
    t.index ["impressionable_type", "impressionable_id", "request_hash"], name: "poly_request_index"
    t.index ["impressionable_type", "impressionable_id", "session_hash"], name: "poly_session_index"
    t.index ["impressionable_type", "message", "impressionable_id"], name: "impressionable_type_message_index"
    t.index ["user_id"], name: "index_impressions_on_user_id"
  end