我一直无法使用印象派宝石来检索我的应用程序中浏览次数最多的帖子。正常的页面浏览量一切正常。 我已经在另一个应用程序上尝试过了，效果很好。这两个应用程序之间唯一的区别是，一个可以运行的应用程序使用SQLITE，而另一个PG。
我通过安装gem来实现它，我生成了表迁移rails g impressionist，并将impressions_count添加到了帖子
rails g migration add_impressions_count_to_posts impressions_count:integer
将此添加到Post.rb
is_impressionable :counter_cache => true
和
Post.order('impressions_count DESC')
在表演动作中将其添加到posts_controller.rb
@most_viewed = Post.order('impressions_count DESC').take(20)
以下是我的后控制器代码：
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
和我的帖子模型
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
show.html.erb
<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>
我的架构中有imprssions表
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