diff --git a/.rubocop.yml b/.rubocop.yml
index 17494974d1..a4b5100819 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,7 +1,7 @@
 Style/AccessModifierIndentation:
   Description: Check indentation of private/protected visibility modifiers.
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#indent-public-private-protected'
-  Enabled: false
+  Enabled: true
 
 Style/AccessorMethodName:
   Description: Check the naming of accessor methods for get_/set_.
@@ -10,20 +10,20 @@ Style/AccessorMethodName:
 Style/Alias:
   Description: 'Use alias_method instead of alias.'
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#alias-method'
-  Enabled: false
+  Enabled: true
 
 Style/AlignArray:
   Description: >-
                  Align the elements of an array literal if they span more than
                  one line.
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#align-multiline-arrays'
-  Enabled: false
+  Enabled: true
 
 Style/AlignHash:
   Description: >-
                  Align the elements of a hash literal if they span more than
                  one line.
-  Enabled: false
+  Enabled: true
 
 Style/AlignParameters:
   Description: >-
@@ -45,12 +45,12 @@ Style/ArrayJoin:
 Style/AsciiComments:
   Description: 'Use only ascii symbols in comments.'
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#english-comments'
-  Enabled: false
+  Enabled: true
 
 Style/AsciiIdentifiers:
   Description: 'Use only ascii symbols in identifiers.'
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#english-identifiers'
-  Enabled: false
+  Enabled: true
 
 Style/Attr:
   Description: 'Checks for uses of Module#attr.'
@@ -60,7 +60,7 @@ Style/Attr:
 Style/BeginBlock:
   Description: 'Avoid the use of BEGIN blocks.'
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#no-BEGIN-blocks'
-  Enabled: false
+  Enabled: true
 
 Style/BarePercentLiterals:
   Description: 'Checks if usage of %() or %Q() matches configuration.'
@@ -74,7 +74,7 @@ Style/BlockComments:
 
 Style/BlockEndNewline:
   Description: 'Put end statement of multiline block on its own line.'
-  Enabled: false
+  Enabled: true
 
 Style/Blocks:
   Description: >-
@@ -82,7 +82,7 @@ Style/Blocks:
                 always ugly).
                 Prefer {...} over do...end for single-line blocks.
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#single-line-blocks'
-  Enabled: false
+  Enabled: true
 
 Style/BracesAroundHashParameters:
   Description: 'Enforce braces style around hash parameters.'
@@ -96,17 +96,17 @@ Style/CaseEquality:
 Style/CaseIndentation:
   Description: 'Indentation of when in a case/when/[else/]end.'
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#indent-when-to-case'
-  Enabled: false
+  Enabled: true
 
 Style/CharacterLiteral:
   Description: 'Checks for uses of character literals.'
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#no-character-literals'
-  Enabled: false
+  Enabled: true
 
 Style/ClassAndModuleCamelCase:
   Description: 'Use CamelCase for classes and modules.'
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#camelcase-classes'
-  Enabled: false
+  Enabled: true
 
 Style/ClassAndModuleChildren:
   Description: 'Checks style of children classes and modules.'
@@ -124,7 +124,7 @@ Style/ClassMethods:
 Style/ClassVars:
   Description: 'Avoid the use of class variables.'
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#no-class-vars'
-  Enabled: false
+  Enabled: true
 
 Style/ColonMethodCall:
   Description: 'Do not use :: for method call.'
@@ -140,12 +140,12 @@ Style/CommentAnnotation:
 
 Style/CommentIndentation:
   Description: 'Indentation of comments.'
-  Enabled: false
+  Enabled: true
 
 Style/ConstantName:
   Description: 'Constants should use SCREAMING_SNAKE_CASE.'
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#screaming-snake-case'
-  Enabled: false
+  Enabled: true
 
 Style/DefWithParentheses:
   Description: 'Use def with parentheses when there are arguments.'
@@ -177,7 +177,7 @@ Style/EachWithObject:
 
 Style/ElseAlignment:
   Description: 'Align elses and elsifs correctly.'
-  Enabled: false
+  Enabled: true
 
 Style/EmptyElse:
   Description: 'Avoid empty else-clauses.'
@@ -283,12 +283,12 @@ Style/IfWithSemicolon:
 
 Style/IndentationConsistency:
   Description: 'Keep indentation straight.'
-  Enabled: false
+  Enabled: true
 
 Style/IndentationWidth:
   Description: 'Use 2 spaces for indentation.'
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#spaces-indentation'
-  Enabled: false
+  Enabled: true
 
 Style/IndentArray:
   Description: >-
@@ -657,7 +657,7 @@ Style/Tab:
 Style/TrailingBlankLines:
   Description: 'Checks trailing blank lines and final newline.'
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#newline-eof'
-  Enabled: false
+  Enabled: true
 
 Style/TrailingComma:
   Description: 'Checks for trailing comma in parameter lists and literals.'
@@ -909,7 +909,7 @@ Lint/StringConversionInInterpolation:
 
 Lint/UnderscorePrefixedVariableName:
   Description: 'Do not use prefix `_` for a variable that is used.'
-  Enabled: false
+  Enabled: true
 
 Lint/UnusedBlockArgument:
   Description: 'Checks for unused block arguments.'
@@ -966,11 +966,11 @@ Rails/Delegate:
 
 Rails/HasAndBelongsToMany:
   Description: 'Prefer has_many :through to has_and_belongs_to_many.'
-  Enabled: false
+  Enabled: true
 
 Rails/Output:
   Description: 'Checks for calls to puts, print, etc.'
-  Enabled: false
+  Enabled: true
 
 Rails/ReadWriteAttribute:
   Description: >-
@@ -991,6 +991,7 @@ Rails/Validation:
 #
 #
 AllCops:
+  RunRailsCops: true
   Exclude:
     - 'spec/**/*'
     - 'features/**/*'
@@ -1000,3 +1001,6 @@ AllCops:
     - 'bin/**/*'
     - 'lib/backup/**/*'
     - 'lib/tasks/**/*'
+    - 'lib/email_validator.rb'
+    - 'lib/gitlab/upgrader.rb'
+    - 'lib/gitlab/seeder.rb'
diff --git a/app/controllers/namespaces_controller.rb b/app/controllers/namespaces_controller.rb
index c59a2401ce..b7a9d8c129 100644
--- a/app/controllers/namespaces_controller.rb
+++ b/app/controllers/namespaces_controller.rb
@@ -15,4 +15,3 @@ class NamespacesController < ApplicationController
     end
   end
 end
-
diff --git a/app/controllers/projects/blob_controller.rb b/app/controllers/projects/blob_controller.rb
index b471d57f69..dccb96ba1d 100644
--- a/app/controllers/projects/blob_controller.rb
+++ b/app/controllers/projects/blob_controller.rb
@@ -59,8 +59,7 @@ class Projects::BlobController < Projects::ApplicationController
 
   def preview
     @content = params[:content]
-    diffy = Diffy::Diff.new(@blob.data, @content, diff: '-U 3',
-                            include_diff_info: true)
+    diffy = Diffy::Diff.new(@blob.data, @content, diff: '-U 3', include_diff_info: true)
     @diff_lines = Gitlab::Diff::Parser.new.parse(diffy.diff.scan(/.*\n/))
 
     render layout: false
diff --git a/app/controllers/projects/raw_controller.rb b/app/controllers/projects/raw_controller.rb
index 84888265dc..c4ddc32e8c 100644
--- a/app/controllers/projects/raw_controller.rb
+++ b/app/controllers/projects/raw_controller.rb
@@ -35,4 +35,3 @@ class Projects::RawController < Projects::ApplicationController
     end
   end
 end
-
diff --git a/app/controllers/projects/refs_controller.rb b/app/controllers/projects/refs_controller.rb
index cede0ebe0a..b80472f8eb 100644
--- a/app/controllers/projects/refs_controller.rb
+++ b/app/controllers/projects/refs_controller.rb
@@ -31,10 +31,10 @@ class Projects::RefsController < Projects::ApplicationController
 
   def logs_tree
     @offset = if params[:offset].present?
-             params[:offset].to_i
-           else
-             0
-           end
+                params[:offset].to_i
+              else
+                0
+              end
 
     @limit = 25
 
diff --git a/app/controllers/projects/wikis_controller.rb b/app/controllers/projects/wikis_controller.rb
index 0e03956e73..0145207bf6 100644
--- a/app/controllers/projects/wikis_controller.rb
+++ b/app/controllers/projects/wikis_controller.rb
@@ -16,16 +16,16 @@ class Projects::WikisController < Projects::ApplicationController
     if @page
       render 'show'
     elsif file = @project_wiki.find_file(params[:id], params[:version_id])
-       if file.on_disk?
-         send_file file.on_disk_path, disposition: 'inline'
-       else
-         send_data(
-           file.raw_data,
-           type: file.mime_type,
-           disposition: 'inline',
-           filename: file.name
-         )
-       end
+      if file.on_disk?
+        send_file file.on_disk_path, disposition: 'inline'
+      else
+        send_data(
+          file.raw_data,
+          type: file.mime_type,
+          disposition: 'inline',
+          filename: file.name
+        )
+      end
     else
       return render('empty') unless can?(current_user, :write_wiki, @project)
       @page = WikiPage.new(@project_wiki)
diff --git a/app/finders/notes_finder.rb b/app/finders/notes_finder.rb
index bef82d7f0f..6fe15b4106 100644
--- a/app/finders/notes_finder.rb
+++ b/app/finders/notes_finder.rb
@@ -7,18 +7,19 @@ class NotesFinder
     # Default to 0 to remain compatible with old clients
     last_fetched_at = Time.at(params.fetch(:last_fetched_at, 0).to_i)
 
-    notes = case target_type
-    when "commit"
-      project.notes.for_commit_id(target_id).not_inline.fresh
-    when "issue"
-      project.issues.find(target_id).notes.inc_author.fresh
-    when "merge_request"
-      project.merge_requests.find(target_id).mr_and_commit_notes.inc_author.fresh
-    when "snippet", "project_snippet"
-      project.snippets.find(target_id).notes.fresh
-    else
-      raise 'invalid target_type'
-    end
+    notes =
+      case target_type
+      when "commit"
+        project.notes.for_commit_id(target_id).not_inline.fresh
+      when "issue"
+        project.issues.find(target_id).notes.inc_author.fresh
+      when "merge_request"
+        project.merge_requests.find(target_id).mr_and_commit_notes.inc_author.fresh
+      when "snippet", "project_snippet"
+        project.snippets.find(target_id).notes.fresh
+      else
+        raise 'invalid target_type'
+      end
 
     # Use overlapping intervals to avoid worrying about race conditions
     notes.where('updated_at > ?', last_fetched_at - FETCH_OVERLAP)
diff --git a/app/finders/snippets_finder.rb b/app/finders/snippets_finder.rb
index 4b0c69f2d2..07b5759443 100644
--- a/app/finders/snippets_finder.rb
+++ b/app/finders/snippets_finder.rb
@@ -40,7 +40,7 @@ class SnippetsFinder
       when 'are_public' then
         snippets.are_public
       else
-       snippets
+        snippets
       end
     else
       snippets.public_and_internal
diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index d00f1aac2d..1fbb44ee44 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -75,10 +75,10 @@ module ApplicationHelper
     options[:class] ||= ''
     options[:class] << ' identicon'
     bg_key = project.id % 7
+    style = "background-color: ##{ allowed_colors.values[bg_key] }; color: #555"
 
-    content_tag(:div, class: options[:class],
-      style: "background-color: ##{ allowed_colors.values[bg_key] }; color: #555") do
-        project.name[0, 1].upcase
+    content_tag(:div, class: options[:class], style: style) do
+      project.name[0, 1].upcase
     end
   end
 
diff --git a/app/helpers/commits_helper.rb b/app/helpers/commits_helper.rb
index 1a322ac048..b4ba14160e 100644
--- a/app/helpers/commits_helper.rb
+++ b/app/helpers/commits_helper.rb
@@ -112,12 +112,13 @@ module CommitsHelper
     person_name = user.nil? ? source_name : user.name
     person_email = user.nil? ? source_email : user.email
 
-    text = if options[:avatar]
-            avatar = image_tag(avatar_icon(person_email, options[:size]), class: "avatar #{"s#{options[:size]}" if options[:size]}", width: options[:size], alt: "")
-            %Q{#{avatar} <span class="commit-#{options[:source]}-name">#{person_name}</span>}
-          else
-            person_name
-          end
+    text =
+      if options[:avatar]
+        avatar = image_tag(avatar_icon(person_email, options[:size]), class: "avatar #{"s#{options[:size]}" if options[:size]}", width: options[:size], alt: "")
+        %Q{#{avatar} <span class="commit-#{options[:source]}-name">#{person_name}</span>}
+      else
+        person_name
+      end
 
     options = {
       class: "commit-#{options[:source]}-link has_tooltip",
diff --git a/app/helpers/notes_helper.rb b/app/helpers/notes_helper.rb
index d41d561739..8edcb8e6a8 100644
--- a/app/helpers/notes_helper.rb
+++ b/app/helpers/notes_helper.rb
@@ -1,5 +1,5 @@
 module NotesHelper
-   # Helps to distinguish e.g. commit notes in mr notes list
+  # Helps to distinguish e.g. commit notes in mr notes list
   def note_for_main_target?(note)
     (@noteable.class.name == note.noteable_type && !note.for_diff_line?)
   end
diff --git a/app/helpers/projects_helper.rb b/app/helpers/projects_helper.rb
index 687b087e68..5cec6ae99d 100644
--- a/app/helpers/projects_helper.rb
+++ b/app/helpers/projects_helper.rb
@@ -254,4 +254,3 @@ module ProjectsHelper
     enabled_oauth_providers.include?(:github)
   end
 end
-
diff --git a/app/helpers/tab_helper.rb b/app/helpers/tab_helper.rb
index 639fc98c22..2142db2992 100644
--- a/app/helpers/tab_helper.rb
+++ b/app/helpers/tab_helper.rb
@@ -90,7 +90,7 @@ module TabHelper
     return "active" if current_page?(controller: "/projects", action: :edit, id: @project)
 
     if ['services', 'hooks', 'deploy_keys', 'team_members', 'protected_branches'].include? controller.controller_name
-     "active"
+      "active"
     end
   end
 
diff --git a/app/models/application_setting.rb b/app/models/application_setting.rb
index 45ae79a75c..0b3d430add 100644
--- a/app/models/application_setting.rb
+++ b/app/models/application_setting.rb
@@ -14,7 +14,8 @@
 #
 
 class ApplicationSetting < ActiveRecord::Base
-  validates :home_page_url, allow_blank: true,
+  validates :home_page_url,
+    allow_blank: true,
     format: { with: URI::regexp(%w(http https)), message: "should be a valid url" },
     if: :home_page_url_column_exist
 
diff --git a/app/models/commit.rb b/app/models/commit.rb
index baccf28674..e0461809e1 100644
--- a/app/models/commit.rb
+++ b/app/models/commit.rb
@@ -88,11 +88,12 @@ class Commit
   # cut off, ellipses (`&hellp;`) are prepended to the commit message.
   def description
     title_end = safe_message.index("\n")
-    @description ||= if (!title_end && safe_message.length > 100) || (title_end && title_end > 100)
-                    "&hellip;".html_safe << safe_message[80..-1]
-                  else
-                    safe_message.split("\n", 2)[1].try(:chomp)
-                  end
+    @description ||=
+      if (!title_end && safe_message.length > 100) || (title_end && title_end > 100)
+        "&hellip;".html_safe << safe_message[80..-1]
+      else
+        safe_message.split("\n", 2)[1].try(:chomp)
+      end
   end
 
   def description?
diff --git a/app/models/namespace.rb b/app/models/namespace.rb
index ea4b48fdd7..e7fd302475 100644
--- a/app/models/namespace.rb
+++ b/app/models/namespace.rb
@@ -20,15 +20,20 @@ class Namespace < ActiveRecord::Base
   belongs_to :owner, class_name: "User"
 
   validates :owner, presence: true, unless: ->(n) { n.type == "Group" }
-  validates :name, presence: true, uniqueness: true,
-            length: { within: 0..255 },
-            format: { with: Gitlab::Regex.name_regex,
-                      message: Gitlab::Regex.name_regex_message }
+  validates :name,
+    presence: true, uniqueness: true,
+    length: { within: 0..255 },
+    format: { with: Gitlab::Regex.name_regex,
+              message: Gitlab::Regex.name_regex_message }
+
   validates :description, length: { within: 0..255 }
-  validates :path, uniqueness: { case_sensitive: false }, presence: true, length: { within: 1..255 },
-            exclusion: { in: Gitlab::Blacklist.path },
-            format: { with: Gitlab::Regex.path_regex,
-                      message: Gitlab::Regex.path_regex_message }
+  validates :path,
+    uniqueness: { case_sensitive: false },
+    presence: true,
+    length: { within: 1..255 },
+    exclusion: { in: Gitlab::Blacklist.path },
+    format: { with: Gitlab::Regex.path_regex,
+              message: Gitlab::Regex.path_regex_message }
 
   delegate :name, to: :owner, allow_nil: true, prefix: true
 
diff --git a/app/models/project.rb b/app/models/project.rb
index f314ed9bd2..cfe40553ab 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -108,13 +108,17 @@ class Project < ActiveRecord::Base
   # Validations
   validates :creator, presence: true, on: :create
   validates :description, length: { maximum: 2000 }, allow_blank: true
-  validates :name, presence: true, length: { within: 0..255 },
-            format: { with: Gitlab::Regex.project_name_regex,
-                      message: Gitlab::Regex.project_regex_message }
-  validates :path, presence: true, length: { within: 0..255 },
-            exclusion: { in: Gitlab::Blacklist.path },
-            format: { with: Gitlab::Regex.path_regex,
-                      message: Gitlab::Regex.path_regex_message }
+  validates :name,
+    presence: true,
+    length: { within: 0..255 },
+    format: { with: Gitlab::Regex.project_name_regex,
+              message: Gitlab::Regex.project_regex_message }
+  validates :path,
+    presence: true,
+    length: { within: 0..255 },
+    exclusion: { in: Gitlab::Blacklist.path },
+    format: { with: Gitlab::Regex.path_regex,
+              message: Gitlab::Regex.path_regex_message }
   validates :issues_enabled, :merge_requests_enabled,
             :wiki_enabled, inclusion: { in: [true, false] }
   validates :visibility_level,
diff --git a/app/models/project_services/bamboo_service.rb b/app/models/project_services/bamboo_service.rb
index 16e1b83da4..745609e591 100644
--- a/app/models/project_services/bamboo_service.rb
+++ b/app/models/project_services/bamboo_service.rb
@@ -17,13 +17,19 @@ class BambooService < CiService
 
   prop_accessor :bamboo_url, :build_key, :username, :password
 
-  validates :bamboo_url, presence: true,
-            format: { with: URI::regexp }, if: :activated?
+  validates :bamboo_url,
+    presence: true,
+    format: { with: URI::regexp },
+    if: :activated?
   validates :build_key, presence: true, if: :activated?
-  validates :username, presence: true,
-            if: ->(service) { service.password? }, if: :activated?
-  validates :password, presence: true,
-            if: ->(service) { service.username? }, if: :activated?
+  validates :username,
+    presence: true,
+    if: ->(service) { service.password? },
+    if: :activated?
+  validates :password,
+    presence: true,
+    if: ->(service) { service.username? },
+    if: :activated?
 
   attr_accessor :response
 
diff --git a/app/models/project_services/teamcity_service.rb b/app/models/project_services/teamcity_service.rb
index dca718b5e8..287f5c0e84 100644
--- a/app/models/project_services/teamcity_service.rb
+++ b/app/models/project_services/teamcity_service.rb
@@ -17,13 +17,16 @@ class TeamcityService < CiService
 
   prop_accessor :teamcity_url, :build_type, :username, :password
 
-  validates :teamcity_url, presence: true,
-            format: { with: URI::regexp }, if: :activated?
+  validates :teamcity_url,
+    presence: true,
+    format: { with: URI::regexp }, if: :activated?
   validates :build_type, presence: true, if: :activated?
-  validates :username, presence: true,
-            if: ->(service) { service.password? }, if: :activated?
-  validates :password, presence: true,
-            if: ->(service) { service.username? }, if: :activated?
+  validates :username,
+    presence: true,
+    if: ->(service) { service.password? }, if: :activated?
+  validates :password,
+    presence: true,
+    if: ->(service) { service.username? }, if: :activated?
 
   attr_accessor :response
 
diff --git a/app/models/snippet.rb b/app/models/snippet.rb
index 9aba42a062..a3222d2989 100644
--- a/app/models/snippet.rb
+++ b/app/models/snippet.rb
@@ -29,9 +29,11 @@ class Snippet < ActiveRecord::Base
 
   validates :author, presence: true
   validates :title, presence: true, length: { within: 0..255 }
-  validates :file_name, presence: true, length: { within: 0..255 },
-            format: { with: Gitlab::Regex.path_regex,
-                      message: Gitlab::Regex.path_regex_message }
+  validates :file_name,
+    presence: true,
+    length: { within: 0..255 },
+    format: { with: Gitlab::Regex.path_regex,
+              message: Gitlab::Regex.path_regex_message }
   validates :content, presence: true
   validates :visibility_level, inclusion: { in: Gitlab::VisibilityLevel.values }
 
diff --git a/app/models/user.rb b/app/models/user.rb
index 27724b3ccb..552a37c953 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -116,10 +116,12 @@ class User < ActiveRecord::Base
   validates :email, presence: true, email: { strict_mode: true }, uniqueness: true
   validates :bio, length: { maximum: 255 }, allow_blank: true
   validates :projects_limit, presence: true, numericality: { greater_than_or_equal_to: 0 }
-  validates :username, presence: true, uniqueness: { case_sensitive: false },
-            exclusion: { in: Gitlab::Blacklist.path },
-            format: { with: Gitlab::Regex.username_regex,
-                      message: Gitlab::Regex.username_regex_message }
+  validates :username,
+    presence: true,
+    uniqueness: { case_sensitive: false },
+    exclusion: { in: Gitlab::Blacklist.path },
+    format: { with: Gitlab::Regex.username_regex,
+              message: Gitlab::Regex.username_regex_message }
 
   validates :notification_level, inclusion: { in: Notification.notification_levels }, presence: true
   validate :namespace_uniq, if: ->(user) { user.username_changed? }
diff --git a/app/models/wiki_page.rb b/app/models/wiki_page.rb
index b9ab6702c5..32981a0e66 100644
--- a/app/models/wiki_page.rb
+++ b/app/models/wiki_page.rb
@@ -43,7 +43,7 @@ class WikiPage
     @attributes[:slug]
   end
 
-  alias :to_param :slug
+  alias_method :to_param, :slug
 
   # The formatted title of this page.
   def title
diff --git a/app/services/oauth2/access_token_validation_service.rb b/app/services/oauth2/access_token_validation_service.rb
index 5a3b94129f..6194f6ce91 100644
--- a/app/services/oauth2/access_token_validation_service.rb
+++ b/app/services/oauth2/access_token_validation_service.rb
@@ -38,4 +38,4 @@ module Oauth2::AccessTokenValidationService
       end
     end
   end
-end
\ No newline at end of file
+end
diff --git a/app/services/projects/image_service.rb b/app/services/projects/image_service.rb
index c79ddddd97..7ca7e82c4a 100644
--- a/app/services/projects/image_service.rb
+++ b/app/services/projects/image_service.rb
@@ -14,14 +14,14 @@ module Projects
         uploader.store!(image)
         link = {
                  'alt' => File.basename(alt, '.*'),
-                 'url' => File.join(@root_url, uploader.url) 
+                 'url' => File.join(@root_url, uploader.url)
                }
       else
         link = nil
       end
     end
 
-  protected
+    protected
 
     def upload_path
       base_dir = FileUploader.generate_dir
diff --git a/app/services/projects/participants_service.rb b/app/services/projects/participants_service.rb
index c4d2c0963b..e3b33de8d0 100644
--- a/app/services/projects/participants_service.rb
+++ b/app/services/projects/participants_service.rb
@@ -5,11 +5,12 @@ module Projects
     end
 
     def execute(note_type, note_id)
-      participating = if note_type && note_id
-                      participants_in(note_type, note_id)
-                    else
-                      []
-                    end
+      participating =
+        if note_type && note_id
+          participants_in(note_type, note_id)
+        else
+          []
+        end
       team_members = sorted(@project.team.members)
       participants = all_members + team_members + participating
       participants.uniq
diff --git a/config/initializers/7_omniauth.rb b/config/initializers/7_omniauth.rb
index 18759f0cfb..8f6c567310 100644
--- a/config/initializers/7_omniauth.rb
+++ b/config/initializers/7_omniauth.rb
@@ -9,4 +9,4 @@ if Gitlab::LDAP::Config.enabled?
     server = Gitlab.config.ldap.servers.values.first
     alias_method server['provider_name'], :ldap
   end
-end
\ No newline at end of file
+end
diff --git a/config/initializers/acts_as_taggable_on_patch.rb b/config/initializers/acts_as_taggable_on_patch.rb
index baa77fde39..0d535cb5ca 100644
--- a/config/initializers/acts_as_taggable_on_patch.rb
+++ b/config/initializers/acts_as_taggable_on_patch.rb
@@ -42,11 +42,12 @@ module ActsAsTaggableOn::Taggable
 
         elsif options.delete(:any)
           # get tags, drop out if nothing returned (we need at least one)
-          tags = if options.delete(:wild)
-            ActsAsTaggableOn::Tag.named_like_any(tag_list)
-          else
-            ActsAsTaggableOn::Tag.named_any(tag_list)
-          end
+          tags =
+            if options.delete(:wild)
+              ActsAsTaggableOn::Tag.named_like_any(tag_list)
+            else
+              ActsAsTaggableOn::Tag.named_any(tag_list)
+            end
 
           return empty_result unless tags.length > 0
 
@@ -68,12 +69,12 @@ module ActsAsTaggableOn::Taggable
           select_clause = "DISTINCT #{table_name}.*" unless context and tag_types.one?
 
           if owned_by
-              tagging_join << " AND " +
-                  sanitize_sql([
-                      "#{taggings_alias}.tagger_id = ? AND #{taggings_alias}.tagger_type = ?",
-                      owned_by.id,
-                      owned_by.class.base_class.to_s
-                  ])
+            tagging_join << " AND " +
+              sanitize_sql([
+                  "#{taggings_alias}.tagger_id = ? AND #{taggings_alias}.tagger_type = ?",
+                  owned_by.id,
+                  owned_by.class.base_class.to_s
+              ])
           end
 
           joins << tagging_join
@@ -92,12 +93,12 @@ module ActsAsTaggableOn::Taggable
             tagging_join << " AND " + sanitize_sql(["#{taggings_alias}.context = ?", context.to_s]) if context
 
             if owned_by
-                tagging_join << " AND " +
-                  sanitize_sql([
-                    "#{taggings_alias}.tagger_id = ? AND #{taggings_alias}.tagger_type = ?",
-                    owned_by.id,
-                    owned_by.class.base_class.to_s
-                  ])
+              tagging_join << " AND " +
+                sanitize_sql([
+                  "#{taggings_alias}.tagger_id = ? AND #{taggings_alias}.tagger_type = ?",
+                  owned_by.id,
+                  owned_by.class.base_class.to_s
+                ])
             end
 
             joins << tagging_join
diff --git a/config/initializers/carrierwave.rb b/config/initializers/carrierwave.rb
index 667f198667..bfb8656df5 100644
--- a/config/initializers/carrierwave.rb
+++ b/config/initializers/carrierwave.rb
@@ -12,11 +12,19 @@ if File.exists?(aws_file)
       aws_secret_access_key: AWS_CONFIG['secret_access_key'], # required
       region: AWS_CONFIG['region'],                           # optional, defaults to 'us-east-1'
     }
-    config.fog_directory  = AWS_CONFIG['bucket']                    # required
-    config.fog_public     = false                                   # optional, defaults to true
-    config.fog_attributes = { 'Cache-Control'=>'max-age=315576000' }  # optional, defaults to {}
-    config.fog_authenticated_url_expiration = 1 << 29               # optional time (in seconds) that authenticated urls will be valid.
-                                                                    # when fog_public is false and provider is AWS or Google, defaults to 600
+
+    # required
+    config.fog_directory = AWS_CONFIG['bucket']
+
+    # optional, defaults to true
+    config.fog_public = false
+
+    # optional, defaults to {}
+    config.fog_attributes = { 'Cache-Control'=>'max-age=315576000' }
+
+    # optional time (in seconds) that authenticated urls will be valid.
+    # when fog_public is false and provider is AWS or Google, defaults to 600
+    config.fog_authenticated_url_expiration = 1 << 29
   end
 
   # Mocking Fog requests, based on: https://github.com/carrierwaveuploader/carrierwave/wiki/How-to%3A-Test-Fog-based-uploaders
diff --git a/config/initializers/gitlab_shell_secret_token.rb b/config/initializers/gitlab_shell_secret_token.rb
index 8d2b771e53..e7c9f0ba7c 100644
--- a/config/initializers/gitlab_shell_secret_token.rb
+++ b/config/initializers/gitlab_shell_secret_token.rb
@@ -16,4 +16,4 @@ end
 
 if File.exist?(Gitlab.config.gitlab_shell.path) && !File.exist?(gitlab_shell_symlink)
   FileUtils.symlink(secret_file, gitlab_shell_symlink)
-end
\ No newline at end of file
+end
diff --git a/config/routes.rb b/config/routes.rb
index a83c112a88..a2d782cf63 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -294,12 +294,10 @@ Gitlab::Application.routes.draw do
         member do
           # tree viewer logs
           get 'logs_tree', constraints: { id: Gitlab::Regex.git_reference_regex }
-          get 'logs_tree/:path' => 'refs#logs_tree',
-            as: :logs_file,
-            constraints: {
-              id:   Gitlab::Regex.git_reference_regex,
-              path: /.*/
-            }
+          get 'logs_tree/:path' => 'refs#logs_tree', as: :logs_file, constraints: {
+            id: Gitlab::Regex.git_reference_regex,
+            path: /.*/
+          }
         end
       end
 
diff --git a/lib/api/api_guard.rb b/lib/api/api_guard.rb
index be3d053efc..b9994fcefd 100644
--- a/lib/api/api_guard.rb
+++ b/lib/api/api_guard.rb
@@ -47,16 +47,12 @@ module APIGuard
         case validate_access_token(access_token, scopes)
         when Oauth2::AccessTokenValidationService::INSUFFICIENT_SCOPE
           raise InsufficientScopeError.new(scopes)
-
         when Oauth2::AccessTokenValidationService::EXPIRED
           raise ExpiredError
-
         when Oauth2::AccessTokenValidationService::REVOKED
           raise RevokedError
-
         when Oauth2::AccessTokenValidationService::VALID
           @current_user = User.find(access_token.resource_owner_id)
-
         end
       end
     end
@@ -120,8 +116,9 @@ module APIGuard
     end
 
     def oauth2_bearer_token_error_handler
-      Proc.new {|e|
-        response = case e
+      Proc.new do |e|
+        response =
+          case e
           when MissingTokenError
             Rack::OAuth2::Server::Resource::Bearer::Unauthorized.new
 
@@ -150,7 +147,7 @@ module APIGuard
           end
 
         response.finish
-      }
+      end
     end
   end
 
diff --git a/lib/api/internal.rb b/lib/api/internal.rb
index a999cff09c..7a89a26fac 100644
--- a/lib/api/internal.rb
+++ b/lib/api/internal.rb
@@ -1,9 +1,7 @@
 module API
   # Internal access API
   class Internal < Grape::API
-    before {
-      authenticate_by_gitlab_shell_token!
-    }
+    before { authenticate_by_gitlab_shell_token! }
 
     namespace 'internal' do
       # Check if git command is allowed to project
diff --git a/lib/api/namespaces.rb b/lib/api/namespaces.rb
index f9f2ed90cc..b90ed6af5f 100644
--- a/lib/api/namespaces.rb
+++ b/lib/api/namespaces.rb
@@ -1,10 +1,10 @@
 module API
   # namespaces API
   class Namespaces < Grape::API
-    before {
+    before do
       authenticate!
       authenticated_as_admin!
-    }
+    end
 
     resource :namespaces do
       # Get a namespaces list
diff --git a/lib/api/system_hooks.rb b/lib/api/system_hooks.rb
index 3e239c5afe..518964db50 100644
--- a/lib/api/system_hooks.rb
+++ b/lib/api/system_hooks.rb
@@ -1,10 +1,10 @@
 module API
   # Hooks API
   class SystemHooks < Grape::API
-    before {
+    before do
       authenticate!
       authenticated_as_admin!
-    }
+    end
 
     resource :hooks do
       # Get the list of system hooks
diff --git a/lib/email_validator.rb b/lib/email_validator.rb
index 0a67ebcd79..f509f0a584 100644
--- a/lib/email_validator.rb
+++ b/lib/email_validator.rb
@@ -1,5 +1,5 @@
 # Based on https://github.com/balexand/email_validator
-# 
+#
 # Extended to use only strict mode with following allowed characters:
 # ' - apostrophe
 #
diff --git a/lib/gitlab/backend/shell_adapter.rb b/lib/gitlab/backend/shell_adapter.rb
index f247f4593d..fbe2a7a0d7 100644
--- a/lib/gitlab/backend/shell_adapter.rb
+++ b/lib/gitlab/backend/shell_adapter.rb
@@ -9,4 +9,3 @@ module Gitlab
     end
   end
 end
-
diff --git a/lib/gitlab/diff/parser.rb b/lib/gitlab/diff/parser.rb
index f7c1f20d76..887ed76b36 100644
--- a/lib/gitlab/diff/parser.rb
+++ b/lib/gitlab/diff/parser.rb
@@ -4,7 +4,7 @@ module Gitlab
       include Enumerable
 
       def parse(lines)
-        @lines = lines,
+        @lines = lines
         lines_obj = []
         line_obj_index = 0
         line_old = 1
@@ -74,7 +74,7 @@ module Gitlab
 
       def html_escape(str)
         replacements = { '&' => '&amp;', '>' => '&gt;', '<' => '&lt;', '"' => '&quot;', "'" => '&#39;' }
-          str.gsub(/[&"'><]/, replacements)
+        str.gsub(/[&"'><]/, replacements)
       end
     end
   end
diff --git a/lib/gitlab/force_push_check.rb b/lib/gitlab/force_push_check.rb
index 6ba2c3ad00..eae9773a06 100644
--- a/lib/gitlab/force_push_check.rb
+++ b/lib/gitlab/force_push_check.rb
@@ -12,4 +12,3 @@ module Gitlab
     end
   end
 end
-
diff --git a/lib/gitlab/git_access.rb b/lib/gitlab/git_access.rb
index ea96d04c5a..6444cec7eb 100644
--- a/lib/gitlab/git_access.rb
+++ b/lib/gitlab/git_access.rb
@@ -112,14 +112,14 @@ module Gitlab
     def protected_branch_action(project, oldrev, newrev, branch_name)
       # we dont allow force push to protected branch
       if forced_push?(project, oldrev, newrev)
-       :force_push_code_to_protected_branches
-       # and we dont allow remove of protected branch
+        :force_push_code_to_protected_branches
       elsif newrev == Gitlab::Git::BLANK_SHA
-       :remove_protected_branches
+        # and we dont allow remove of protected branch
+        :remove_protected_branches
       elsif project.developers_can_push_to_protected_branch?(branch_name)
-       :push_code
+        :push_code
       else
-       :push_code_to_protected_branches
+        :push_code_to_protected_branches
       end
     end
 
diff --git a/lib/gitlab/ldap/adapter.rb b/lib/gitlab/ldap/adapter.rb
index 256cdb4c2f..577a890a7d 100644
--- a/lib/gitlab/ldap/adapter.rb
+++ b/lib/gitlab/ldap/adapter.rb
@@ -63,8 +63,10 @@ module Gitlab
       end
 
       def dn_matches_filter?(dn, filter)
-        ldap_search(base: dn, filter: filter,
-          scope: Net::LDAP::SearchScope_BaseObject, attributes: %w{dn}).any?
+        ldap_search(base: dn,
+                    filter: filter,
+                    scope: Net::LDAP::SearchScope_BaseObject,
+                    attributes: %w{dn}).any?
       end
 
       def ldap_search(*args)