Add last_edited_at and last_edited_by attributes

app/helpers/application_helper.rb

@@ -181,15 +181,15 @@ module ApplicationHelper
   end
 
   def edited_time_ago_with_tooltip(object, placement: 'top', html_class: 'time_ago', include_author: false)
-    return if object.updated_at == object.created_at
+    return if object.last_edited_at == object.created_at || object.last_edited_at.blank?
 
-    content_tag :small, class: "edited-text" do
-      output = content_tag(:span, "Edited ")
-      output << time_ago_with_tooltip(object.updated_at, placement: placement, html_class: html_class)
+    content_tag :small, class: 'edited-text' do
+      output = content_tag(:span, 'Edited ')
+      output << time_ago_with_tooltip(object.last_edited_at, placement: placement, html_class: html_class)
 
-      if include_author && object.updated_by
-        output << content_tag(:span, " by ")
-        output << link_to_member(object.project, object.updated_by, avatar: false, author_class: nil)
+      if include_author && object.last_edited_by
+        output << content_tag(:span, ' by ')
+        output << link_to_member(object.project, object.last_edited_by, avatar: false, author_class: nil)
       end
 
       output

app/models/concerns/issuable.rb

@@ -28,6 +28,7 @@ module Issuable
     belongs_to :author, class_name: "User"
     belongs_to :assignee, class_name: "User"
     belongs_to :updated_by, class_name: "User"
+    belongs_to :last_edited_by, class_name: 'User'
     belongs_to :milestone
     has_many :notes, as: :noteable, inverse_of: :noteable, dependent: :destroy do
       def authors_loaded?

app/models/note.rb

@@ -38,6 +38,7 @@ class Note < ActiveRecord::Base
   belongs_to :noteable, polymorphic: true, touch: true
   belongs_to :author, class_name: "User"
   belongs_to :updated_by, class_name: "User"
+  belongs_to :last_edited_by, class_name: 'User'
 
   has_many :todos, dependent: :destroy
   has_many :events, as: :target, dependent: :destroy

app/services/issuable_base_service.rb

@@ -218,6 +218,13 @@ class IssuableBaseService < BaseService
     if issuable.changed? || params.present?
       issuable.assign_attributes(params.merge(updated_by: current_user))
 
+      if has_title_or_description_changed?(issuable)
+        issuable.assign_attributes(params.merge(
+          last_edited_at: Time.now,
+          last_edited_by: current_user
+        ))
+      end
+
       before_update(issuable)
 
       if issuable.with_transaction_returning_status { issuable.save }
@@ -240,6 +247,10 @@ class IssuableBaseService < BaseService
     old_label_ids.sort != new_label_ids.sort
   end
 
+  def has_title_or_description_changed?(issuable)
+    issuable.title_changed? || issuable.description_changed?
+  end
+
   def change_state(issuable)
     case params.delete(:state_event)
     when 'reopen'

app/services/notes/update_service.rb

@@ -5,7 +5,11 @@ module Notes
 
       old_mentioned_users = note.mentioned_users.to_a
 
+      note.assign_attributes(params)
+      params.merge!(last_edited_at: Time.now, last_edited_by: current_user) if note.note_changed?
+
       note.update_attributes(params.merge(updated_by: current_user))
+
       note.create_new_cross_references!(current_user)
 
       if note.previous_changes.include?('note')

db/migrate/20170503021915_add_last_edited_at_and_last_edited_by_id_to_issues.rb

+# See http://doc.gitlab.com/ce/development/migration_style_guide.html
+# for more information on how to write migrations for GitLab.
+
+class AddLastEditedAtAndLastEditedByIdToIssues < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  # Set this constant to true if this migration requires downtime.
+  DOWNTIME = false
+
+  def change
+    add_column :issues, :last_edited_at, :timestamp
+    add_column :issues, :last_edited_by_id, :integer
+  end
+end

db/migrate/20170503022512_add_last_edited_at_and_last_edited_by_id_to_notes.rb

+# See http://doc.gitlab.com/ce/development/migration_style_guide.html
+# for more information on how to write migrations for GitLab.
+
+class AddLastEditedAtAndLastEditedByIdToNotes < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  # Set this constant to true if this migration requires downtime.
+  DOWNTIME = false
+
+  def change
+    add_column :notes, :last_edited_at, :timestamp
+    add_column :notes, :last_edited_by_id, :integer
+  end
+end

db/migrate/20170503022548_add_last_edited_at_and_last_edited_by_id_to_merge_requests.rb

+# See http://doc.gitlab.com/ce/development/migration_style_guide.html
+# for more information on how to write migrations for GitLab.
+
+class AddLastEditedAtAndLastEditedByIdToMergeRequests < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  # Set this constant to true if this migration requires downtime.
+  DOWNTIME = false
+
+  def change
+    add_column :merge_requests, :last_edited_at, :timestamp
+    add_column :merge_requests, :last_edited_by_id, :integer
+  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: 20170426181740) do
+ActiveRecord::Schema.define(version: 20170503022548) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -488,6 +488,8 @@ ActiveRecord::Schema.define(version: 20170426181740) do
     t.integer "relative_position"
     t.datetime "closed_at"
     t.integer "cached_markdown_version"
+    t.datetime "last_edited_at"
+    t.integer "last_edited_by_id"
   end
 
   add_index "issues", ["assignee_id"], name: "index_issues_on_assignee_id", using: :btree
@@ -674,6 +676,8 @@ ActiveRecord::Schema.define(version: 20170426181740) do
     t.text "description_html"
     t.integer "time_estimate"
     t.integer "cached_markdown_version"
+    t.datetime "last_edited_at"
+    t.integer "last_edited_by_id"
   end
 
   add_index "merge_requests", ["assignee_id"], name: "index_merge_requests_on_assignee_id", using: :btree
@@ -774,6 +778,8 @@ ActiveRecord::Schema.define(version: 20170426181740) do
     t.string "discussion_id"
     t.text "note_html"
     t.integer "cached_markdown_version"
+    t.datetime "last_edited_at"
+    t.integer "last_edited_by_id"
   end
 
   add_index "notes", ["author_id"], name: "index_notes_on_author_id", using: :btree