通知を1周間より最近なものに限定

app/models/notification.rb

@@ -19,11 +19,14 @@ class Notification < ActiveRecord::Base
   # Named scope
   ######################################################################
 
-  # 最新のPostを取得
   scope :unread, -> {
     where(is_read: false)
   }
 
+  scope :recent, -> {
+    where(arel_table[:created_at].gt 7.day.ago)
+  }
+
   ######################################################################
   # Instance method
   ######################################################################

app/models/user.rb

@@ -115,7 +115,9 @@ class User < ActiveRecord::Base
 
   # push通知を追加
   def push_notification(detail_path, body)
-    notifications.create(detail_path: detail_path, body: body, is_read: false)
+    unless notifications.where(detail_path: detail_path).unread.exists?
+      notifications.create(detail_path: detail_path, body: body, is_read: false)
+    end
   end
 
   # record footprint

app/views/partials/_app_header.html.slim

@@ -30,7 +30,7 @@ nav.navbar.navbar-fixed-top.navbar-original role="navigation"
           a#notifications data-container="body" data-toggle="popover" data-placement="bottom"
             span.glyphicon.glyphicon-flag
             - if current_user.notifications.unread.any?
-              span.badge = current_user.notifications.unread.count
+              span.badge = current_user.notifications.unread.recent.count
         li.new-post-btn
           form
             a.btn.navbar-btn href=new_post_path
@@ -56,10 +56,10 @@ nav.navbar.navbar-fixed-top.navbar-original role="navigation"
               a href=destroy_user_session_path data-method="delete" rel="nofollow" SignOut
 
 script#notification-content type="text/template"
-  - if current_user.notifications.unread.any?
+  - if current_user.notifications.unread.recent.any?
     h4 通知一覧
     .list-group
-    - current_user.notifications.unread.each do |notification|
+    - current_user.notifications.unread.recent.each do |notification|
         a.list-group-item href=notification_bridge_path(notification.id)
           spen.small
             | [#{notification.created_at.strftime('%m/%d %H:%M')}] 

spec/models/notification_spec.rb

@@ -32,6 +32,16 @@ describe Notification do
       expect(@bob.notifications.size).to eq(1)
     end
 
+    it "not duplicated notifies on post edited" do
+      @bob.watch!(post: @post)
+      expect(@bob.watching?(post: @post)).to be_truthy
+      @post.reload
+      expect(@post.watchers).to include(@bob)
+      @post.update!(title: @post.title + ' [New!]')
+      @post.update!(title: @post.title + ' [New!]')
+      expect(@bob.notifications.size).to eq(1)
+    end
+
     it "not notifies on post edited by him" do
       @bob.watch!(post: @post)
       @post.reload