small_itemに日付表示, counter_cache追加

Gemfile

@@ -71,7 +71,7 @@ group :development do
   gem 'pry-rails'
 
   # profiler
-  # gem 'rack-mini-profiler'
+  gem 'rack-mini-profiler'
 
   # rubocop
   gem 'rubocop'

Gemfile.lock

@@ -250,6 +250,8 @@ GEM
     pry-rails (0.3.2)
       pry (>= 0.9.10)
     rack (1.5.2)
+    rack-mini-profiler (0.9.0)
+      rack (>= 1.1.3)
     rack-test (0.6.2)
       rack (>= 1.0)
     rails (4.1.0)
@@ -415,6 +417,7 @@ DEPENDENCIES
   poltergeist
   premailer
   pry-rails
+  rack-mini-profiler
   rails (~> 4)
   rspec-rails
   rubocop

app/decorators/tag_decorator.rb

@@ -10,6 +10,8 @@ class TagDecorator < Draper::Decorator
   #     end
   #   end
 
+  decorates_association :posts
+
   # tagページのURL
   # urlエンコードを施す
   def show_path
@@ -30,7 +32,7 @@ class TagDecorator < Draper::Decorator
 
     _html += %Q{
       <a href="#{ self.show_path }" data-name="#{model.name}">
-        #{model.name} <span class="badge">#{model.posts.count}</span>
+        #{model.name} <span class="badge">#{model.posts.size}</span>
       </a>
     }
 

app/models/post.rb

@@ -61,6 +61,11 @@ class Post < ActiveRecord::Base
     _where_list
   end)
 
+  # 最新のPostを取得
+  scope :recent, -> (limit = 10) {
+    order(updated_at: :desc).limit(limit)
+  }
+
   # generate forked post (not saved)
   def generate_fork(user)
 

app/models/post_tag.rb

@@ -11,5 +11,5 @@
 
 class PostTag < ActiveRecord::Base
   belongs_to :post
-  belongs_to :tag
+  belongs_to :tag, counter_cache: 'posts_count'
 end

app/models/tag.rb

@@ -29,6 +29,10 @@ class Tag < ActiveRecord::Base
     having('posts_count > 0')
   }
 
+  def recent_posts(limit = 30)
+    self.posts.recent(limit)
+  end
+
   # 自分のタグに紐づくPostをすべて`other_tag`へ移動する
   def move_all_posts_to!(other_tag)
     self.posts.each do |_post|

app/views/posts/_small_item.html.slim

 / locals:
 /   post {Post}
 
-a.list-group-item.post-list data-post-id=post.id href="#" = post.title
+a.list-group-item.post-list data-post-id=post.id href=post_path(post)
+  span.label.label-default.pull-right = post.display_specified_date if post.specified_date
+  = post.title

app/views/tags/show.html.slim

@@ -40,8 +40,10 @@
       h2
         small
           | 「#{@tag.name}」のタグが付いた記事
-      - @tag.posts.each_with_index do |post, i|
-        a.list-group-item.post-list href=post_path(post) = post.title
+      - @tag.recent_posts.each do |post|
+        = render partial: 'posts/small_item', locals: { post: post.decorate }
+      a.list-group-item.post-list href=search_path(q: "##{@tag.name}") もっと見る
+
 
 #modal-merge.modal.fade aria-hidden="true" aria-labelledby="myModalLabel" role="dialog" tabindex="-1"
   .modal-dialog

config/routes.rb

@@ -27,7 +27,7 @@ Rendezvous::Application.routes.draw do
   # devise_for :users , only: [:sign_in, :sign_out, :session]
 
   devise_for :users,
-    path_names: {current_user: 'me'},
+    path_names: { current_user: 'me' },
     controllers: { omniauth_callbacks: 'users/omniauth_callbacks' },
     skip: [:passwords]
 

db/migrate/20140420120819_add_posts_count_to_tags.rb

+class AddPostsCountToTags < ActiveRecord::Migration
+  def change
+    add_column :tags, :posts_count, :integer, default: 0, null: false
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20140328045902) do
+ActiveRecord::Schema.define(version: 20140420120819) do
 
   create_table "comments", force: true do |t|
     t.integer  "author_id"
@@ -52,6 +52,7 @@ ActiveRecord::Schema.define(version: 20140328045902) do
     t.datetime "updated_at"
     t.string   "ancestry"
     t.text     "body"
+    t.integer  "posts_count", default: 0, null: false
   end
 
   add_index "tags", ["ancestry"], name: "index_tags_on_ancestry", using: :btree

lib/tasks/batch.rake

+
+namespace :batch do
+
+  desc 'Tagに関連するPostのcounter_cacheの再生成'
+  task reset_counters: :environment do
+    Tag.all.each{|t| Tag.reset_counters(t.id, :posts) }
+  end
+
+end
+
+