conform to rubocop

.rubocop.yml

@@ -47,3 +47,11 @@ Style/RescueModifier:
 # and/orを許容
 Style/AndOr:
   Enabled: false
+
+# ABCチェックを無効
+Metrics/AbcSize:
+  Enabled: false
+
+# ???
+Style/RaiseArgs:
+  Enabled: false

.travis.yml

@@ -22,4 +22,4 @@ before_script:
 - mysql -e 'CREATE DATABASE rendezvous_test;'
 after_script:
 - ruby script/travis/bundle_cache.rb
-script: bundle exec rake db:create db:test:load spec teaspoon
+script: bundle exec rake db:create db:test:load spec teaspoon; bundle exec rubocop

app/controllers/apis_controller.rb

@@ -48,7 +48,7 @@ class ApisController < ApplicationController
   end
 
   def user_mention
-    name_list = User.search(params[:q]).map { |_user| "#{_user.nickname}[#{_user.name}]" }
+    name_list = User.search(params[:q]).map { |user| "#{user.nickname}[#{user.name}]" }
 
     render json: name_list
   end

app/controllers/application_controller.rb

@@ -8,11 +8,11 @@ class ApplicationController < ActionController::Base
   before_action :redirect_unless_signed_in
 
   def redirect_unless_signed_in
-    unless user_signed_in?
-      flash[:alert] = 'You need Login!'
-      session[:login_redirect_to] = request.url
-      redirect_to root_path
-    end
+    return if user_signed_in?
+
+    flash[:alert] = 'You need Login!'
+    session[:login_redirect_to] = request.url
+    redirect_to root_path
   end
 
   def after_sign_in_path_for(resource)

app/controllers/posts_controller.rb

@@ -10,8 +10,8 @@ class PostsController < ApplicationController
   def show
     current_user.visit_post!(@post)
 
-    @post.tags.each do |_tag|
-      add_breadcrumb("##{_tag.name}", _tag.decorate.show_path)
+    @post.tags.each do |tag|
+      add_breadcrumb("##{tag.name}", tag.decorate.show_path)
     end
     add_breadcrumb(@post.title)
   end
@@ -131,17 +131,17 @@ class PostsController < ApplicationController
   # Never trust parameters from the scary internet, only allow the white list through.
   def post_params
     @post_params ||= begin
-      _param_hash = params.require(:post).permit(:title, :body, :tags, :is_draft, :specified_date).to_hash
+      param_hash = params.require(:post).permit(:title, :body, :tags, :is_draft, :specified_date).to_hash
 
       # tags_text == 'Javascript,Ruby'
-      tags_text = _param_hash.delete('tags')
+      tags_text = param_hash.delete('tags')
 
-      tags = tags_text.split(',').map do |_tag_name|
-        Tag.find_or_create_by(name: _tag_name)
+      tags = tags_text.split(',').map do |tag_name|
+        Tag.find_or_create_by(name: tag_name)
       end
-      _param_hash['tag_ids'] = tags.map(&:id)
+      param_hash['tag_ids'] = tags.map(&:id)
 
-      _param_hash
+      param_hash
     end
   end
 

app/controllers/tags_controller.rb

@@ -66,7 +66,7 @@ class TagsController < ApplicationController
   def move_to
     @move_to_tag = Tag.find_by(name: params[:move_to_name]) or fail ActiveRecord::RecordNotFound
 
-    @tag.set_parent!(@move_to_tag)
+    @tag.parent_tag = @move_to_tag
 
     flash[:notice] = "「#{@tag.name}」は「#{@move_to_tag.name}」の下に移動しました"
 

app/decorators/post_decorator.rb

@@ -12,12 +12,12 @@ class PostDecorator < Draper::Decorator
   # 読了時間
   #   500文字/1分換算
   def read_time
-    _time_min = model.body.length / 500
-    case _time_min
+    time_min = model.body.length / 500
+    case time_min
     when 0
       '< 1 min.'
     when 1..10
-      "#{_time_min} min."
+      "#{time_min} min."
     else
       '> 10 min.'
     end

app/decorators/posts_decorator.rb

 class PostsDecorator < Draper::CollectionDecorator
   def related_tags
-    _tags = map(&:tags).flatten.uniq
+    tags = map(&:tags).flatten.uniq
 
-    TagDecorator.decorate_collection(_tags)
+    TagDecorator.decorate_collection(tags)
   end
 
   def related_authors

app/decorators/tag_decorator.rb

@@ -28,22 +28,22 @@ class TagDecorator < Draper::Decorator
 
   # tagをtree viewで表示する
   def tree_view_node
-    _html = ''
+    html = ''
 
-    _html += %(
+    html += %(
       <a href="#{ show_path }" data-name="#{model.name}">
         #{model.name} <span class="badge">#{model.posts.size}</span>
       </a>
         )
 
-    _html += '<ul>'
-    model.children.each do |_child|
-      _html += '<li>'
-      _html << _child.decorate.tree_view_node
-      _html += '</li>'
+    html += '<ul>'
+    model.children.each do |child|
+      html += '<li>'
+      html << child.decorate.tree_view_node
+      html += '</li>'
     end
-    _html += '</ul>'
+    html += '</ul>'
 
-    _html.html_safe
+    html.html_safe
   end
 end

app/decorators/tags_decorator.rb

 class TagsDecorator < Draper::CollectionDecorator
   # tagをtree viewで表示する
   def tree_view
-    _html = ''
-    _html += %(
+    html = ''
+    html += %(
       <ul class="mod-tag-tree">
         <input type="search" class="mod-tag-tree-filter form-control" placeholder="filter...">
         )
-    each do |_node|
-      _html += %(
+    each do |node|
+      html += %(
         <li>
-          #{_node.decorate.tree_view_node}
+          #{node.decorate.tree_view_node}
         </li>
             )
     end
-    _html += '</ul>'
+    html += '</ul>'
 
-    _html.html_safe
+    html.html_safe
   end
 end

app/helpers/application_helper.rb

 module ApplicationHelper
-  def h_application_format_markdown(text)
-    fail 'deplicated error'
-    text = GitHub::Markdown.render_gfm(text)
-    text.html_safe
-  end
 end

app/models/markdown_renderer.rb

@@ -11,7 +11,8 @@ class MarkdownRenderer
     text = @text.gsub(/!slide!\(([^\)]+)\)/) do |_|
       slide_urls << %(
         <div class="embed-responsive embed-responsive-4by3">
-          <iframe style="text-align:center;" src="/ViewerJS/##{Regexp.last_match[1]}" width="400" height="300" allowfullscreen="true" webkitallowfullscreen="true"></iframe>
+          <iframe style="text-align:center;" src="/ViewerJS/##{Regexp.last_match[1]}"
+            width="400" height="300" allowfullscreen="true" webkitallowfullscreen="true"></iframe>
         </div>
             )
       "%%slide:#{slide_urls.size - 1}%%"

app/models/notification.rb

@@ -19,13 +19,13 @@ class Notification < ActiveRecord::Base
   # Named scope
   ######################################################################
 
-  scope :unread, -> {
+  scope :unread, (lambda do
     where(is_read: false)
-  }
+  end)
 
-  scope :recent, -> {
+  scope :recent, (lambda do
     where(arel_table[:created_at].gt 7.day.ago)
-  }
+  end)
 
   ######################################################################
   # Instance method

app/models/post.rb

@@ -47,40 +47,40 @@ class Post < ActiveRecord::Base
   # Named scope
   ######################################################################
   scope :search, (lambda do |query|
-    _where_list = includes(:author, :tags).order(updated_at: :desc)
+    where_list = includes(:author, :tags).order(updated_at: :desc)
 
     # Convert spaces to one space.
     query_list = query.split(/[\s　]+/)
 
-    query_list.each do |_query|
-      case _query
+    query_list.each do |where_query|
+      case where_query
       when /\Aid:(.+)/
-        _where_list = _where_list.where(id: Regexp.last_match[1])
+        where_list = where_list.where(id: Regexp.last_match[1])
       when /\Atitle:(.+)/
-        _where_list = _where_list.where('posts.title LIKE ?', "%#{Regexp.last_match[1]}%")
+        where_list = where_list.where('posts.title LIKE ?', "%#{Regexp.last_match[1]}%")
       when /\Abody:(.+)/
-        _where_list = _where_list.where('posts.body LIKE ?', "%#{Regexp.last_match[1]}%")
+        where_list = where_list.where('posts.body LIKE ?', "%#{Regexp.last_match[1]}%")
       when /\A@(.+)/
-        _where_list = _where_list.where(users: { nickname: Regexp.last_match[1] })
+        where_list = where_list.where(users: { nickname: Regexp.last_match[1] })
       when /\A#(.+)/
-        _where_list = _where_list.where(tags: { name: Regexp.last_match[1] })
+        where_list = where_list.where(tags: { name: Regexp.last_match[1] })
       when /\Adate:(\d+)-(\d+)-(\d+)/
-        _date = Time.new(Regexp.last_match[1], Regexp.last_match[2], Regexp.last_match[3])
-        _where_list = _where_list.where('posts.updated_at > ? AND posts.updated_at < ?', _date, _date + 1.day)
+        date = Time.new(Regexp.last_match[1], Regexp.last_match[2], Regexp.last_match[3])
+        where_list = where_list.where('posts.updated_at > ? AND posts.updated_at < ?', date, date + 1.day)
       when /\Adraft:1/
-        _where_list = _where_list.where(is_draft: true)
+        where_list = where_list.where(is_draft: true)
       else
-        _where_list = _where_list.where('posts.title LIKE ? OR posts.body LIKE ?', "%#{_query}%", "%#{_query}%")
+        where_list = where_list.where('posts.title LIKE ? OR posts.body LIKE ?', "%#{where_query}%", "%#{where_query}%")
       end
     end
 
-    _where_list
+    where_list
   end)
 
   # 最新のPostを取得
-  scope :recent, -> (limit = 10) {
+  scope :recent, (lambda do |limit = 10|
     order(updated_at: :desc).limit(limit)
-  }
+  end)
 
   ######################################################################
   # Instance method
@@ -89,19 +89,19 @@ class Post < ActiveRecord::Base
   # generate forked post (not saved)
   def generate_fork(user)
     # `id`以外をコピーする
-    _forked_post = Post.new(attributes.except('id'))
+    forked_post = Post.new(attributes.except('id'))
 
     # `%name`をユーザー名に置換
-    _forked_post.title = _forked_post.title.gsub(/%name/, user.name)
+    forked_post.title = forked_post.title.gsub(/%name/, user.name)
     # `%Y`などを日付に変換
-    _forked_post.title = Time.now.strftime(_forked_post.title) # TODO
-    _forked_post.title = _forked_post.title
+    forked_post.title = Time.now.strftime(forked_post.title) # TODO
+    forked_post.title = forked_post.title
 
-    _forked_post.tag_ids = tag_ids
-    _forked_post.author = user
-    _forked_post.specified_date = Date.today
+    forked_post.tag_ids = tag_ids
+    forked_post.author = user
+    forked_post.specified_date = Date.today
 
-    _forked_post
+    forked_post
   end
 
   # slideshow用のbody
@@ -113,9 +113,9 @@ class Post < ActiveRecord::Base
     footprints.select(:user_id).uniq.count
   end
 
-  # FIXME:
+  # FIXME: 正常に動作しないため動作しないため一時的にメソッドを作成
   #   has_many :watchers, :through => :watches
-  #   正常に動作しないため動作しないため一時的にメソッドを作成
+  #
   # def watchers
   #   watches.map { |watch| watch.watcher }
   # end

app/models/tag.rb

@@ -43,14 +43,14 @@ class Tag < ActiveRecord::Base
 
   # 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)
-    posts.each do |_post|
-      _post.tags.delete(self)
-      _post.tags << other_tag unless _post.tags.include?(other_tag)
+    posts.each do |moving_post|
+      moving_post.tags.delete(self)
+      moving_post.tags << other_tag unless moving_post.tags.include?(other_tag)
     end
   end
 
   # 親タグを設定する
-  def set_parent!(other_tag)
+  def parent_tag=(other_tag)
     self.parent = other_tag
     self.save!
   end

app/models/user.rb

@@ -46,12 +46,12 @@ class User < ActiveRecord::Base
   ######################################################################
   # scope
   ######################################################################
-  scope :post_recently, -> {
+  scope :post_recently, (lambda do
     User.joins(:posts).group('id').order('posts.updated_at desc')
-  }
+  end)
 
-  scope :search, (lambda do |_query|
-    where('name LIKE ? OR nickname LIKE ?', "%#{_query}%", "%#{_query}%")
+  scope :search, (lambda do |query|
+    where('name LIKE ? OR nickname LIKE ?', "%#{query}%", "%#{query}%")
   end)
 
   ######################################################################
@@ -66,11 +66,11 @@ class User < ActiveRecord::Base
 
   # Device
   def self.find_for_google_oauth2(access_token, _signed_in_resource = nil)
-    user = where(email: access_token.info['email']).first_or_create do |_user|
-      _user.name = access_token.info['name']
-      _user.image_url = access_token.info['image']
-      _user.password = Devise.friendly_token[0, 20]
-      _user.nickname = (('a'..'z').to_a + ('A'..'Z').to_a + (0..9).to_a).shuffle[0..4].join
+    user = where(email: access_token.info['email']).first_or_create do |u|
+      u.name = access_token.info['name']
+      u.image_url = access_token.info['image']
+      u.password = Devise.friendly_token[0, 20]
+      u.nickname = (('a'..'z').to_a + ('A'..'Z').to_a + (0..9).to_a).shuffle[0..4].join
     end
 
     user.update(
@@ -113,9 +113,9 @@ class User < ActiveRecord::Base
 
   # push通知を追加
   def push_notification(detail_path, body)
-    unless notifications.where(detail_path: detail_path).unread.exists?
-      notifications.create(detail_path: detail_path, body: body, is_read: false)
-    end
+    return if notifications.where(detail_path: detail_path).unread.exists?
+
+    notifications.create(detail_path: detail_path, body: body, is_read: false)
   end
 
   # record footprint

lib/tasks/migrations.rake

@@ -3,11 +3,11 @@ namespace :migrations do
 
   desc '001 nicknameを自動付与'
   task task_001_user_nickname: :environment do
-    User.all.each do |_user|
-      next if _user.nickname.present?
+    User.all.each do |user|
+      next if user.nickname.present?
 
       new_nickname = (('a'..'z').to_a + ('A'..'Z').to_a + (0..9).to_a).shuffle[0..4].join
-      _user.update_attributes!(nickname: new_nickname)
+      user.update_attributes!(nickname: new_nickname)
     end
   end
 

spec/models/markdown_renderer_spec.rb

@@ -8,6 +8,7 @@ RSpec.describe MarkdownRenderer, type: :model do
 - body
 - test
 EOS
+
     expect(renderer.render.to_s.gsub(/^ +/, '')).to eq(<<EOS)
 <h1>title</h1>
 
@@ -26,12 +27,14 @@ EOS
     expect(renderer.render.to_s.gsub(/^ +/, '')).to eq(<<EOS)
 <p>
 <div class="embed-responsive embed-responsive-4by3">
-<iframe style="text-align:center;" src="/ViewerJS/#http://test.com/slide-1.pdf" width="400" height="300" allowfullscreen="true" webkitallowfullscreen="true"></iframe>
+<iframe style="text-align:center;" src="/ViewerJS/#http://test.com/slide-1.pdf"
+width="400" height="300" allowfullscreen="true" webkitallowfullscreen="true"></iframe>
 </div>
 <br>
 
 <div class="embed-responsive embed-responsive-4by3">
-<iframe style="text-align:center;" src="/ViewerJS/#http://test.com/slide-2.pdf" width="400" height="300" allowfullscreen="true" webkitallowfullscreen="true"></iframe>
+<iframe style="text-align:center;" src="/ViewerJS/#http://test.com/slide-2.pdf"
+width="400" height="300" allowfullscreen="true" webkitallowfullscreen="true"></iframe>
 </div>
 </p>
 EOS

spec/models/tag_spec.rb

@@ -33,7 +33,7 @@ describe Tag do
     end
   end
 
-  describe '#set_parent!' do
+  describe '#parent_tag=' do
     before :each do
       @tag_ruby = Tag.create(name: 'ruby')
       @tag_lang = Tag.create(name: 'lang')
@@ -42,7 +42,7 @@ describe Tag do
     it 'successfully moved' do
       expect(@tag_ruby.parent).not_to eq(@tag_lang)
       expect(@tag_lang.children).not_to include(@tag_ruby)
-      @tag_ruby.set_parent!(@tag_lang)
+      @tag_ruby.parent_tag = @tag_lang
       expect(@tag_ruby.parent).to eq(@tag_lang)
       expect(@tag_lang.children).to include(@tag_ruby)
     end