Address review comments

app/controllers/boards/issues_controller.rb

@@ -9,6 +9,7 @@ module Boards
     before_action :authorize_read_issue, only: [:index]
     before_action :authorize_create_issue, only: [:create]
     before_action :authorize_update_issue, only: [:update]
+    skip_before_action :authenticate_user!, only: [:index]
 
     def index
       issues = Boards::Issues::ListService.new(board_parent, current_user, filter_params).execute
@@ -74,13 +75,11 @@ module Boards
     end
 
     def project
-      @project ||= begin
-        if board.group_board?
-          Project.find(issue_params[:project_id])
-        else
-          board_parent
-        end
-      end
+      @project ||= if board.group_board?
+                     Project.find(issue_params[:project_id])
+                   else
+                     board_parent
+                   end
     end
 
     def move_params

app/helpers/boards_helper.rb

@@ -37,13 +37,11 @@ module BoardsHelper
   end
 
   def current_board_path(board)
-    @current_board_path ||= begin
-      if board.group_board?
-        group_board_path(current_board_parent, board)
-      else
-        project_board_path(current_board_parent, board)
-      end
-    end
+    @current_board_path ||= if board.group_board?
+                              group_board_path(current_board_parent, board)
+                            else
+                              project_board_path(current_board_parent, board)
+                            end
   end
 
   def current_board_parent

app/helpers/groups_helper.rb

@@ -129,7 +129,7 @@ module GroupsHelper
     links = [:overview, :group_members]
 
     if can?(current_user, :read_cross_project)
-      links += [:activity, :issues, :labels, :milestones, :merge_requests, :boards]
+      links += [:activity, :issues, :boards, :labels, :milestones, :merge_requests]
     end
 
     if can?(current_user, :admin_group, @group)

changelogs/unreleased/issue_38337.yml

 ---
-title: Add one group port to CE
+title: Add one group board to Libre
 merge_request:
 author:
 type: added

config/routes/group.rb

@@ -59,14 +59,6 @@ constraints(GroupUrlConstrainer.new) do
 
     # On CE only index and show actions are needed
     resources :boards, only: [:index, :show]
-
-    legacy_ee_group_boards_redirect = redirect do |params, request|
-      path = "/groups/#{params[:group_id]}/-/boards"
-      path << "/#{params[:extra_params]}" if params[:extra_params].present?
-      path << "?#{request.query_string}" if request.query_string.present?
-      path
-    end
-    get 'boards(/*extra_params)', as: :legacy_ee_group_boards_redirect, to: legacy_ee_group_boards_redirect
   end
 
   scope(path: '*id',

config/routes/project.rb

@@ -381,7 +381,7 @@ constraints(ProjectUrlConstrainer.new) do
 
       get 'noteable/:target_type/:target_id/notes' => 'notes#index', as: 'noteable_notes'
 
-      resources :boards, only: [:index, :show, :create, :update, :destroy]
+      resources :boards, only: [:index, :show]
 
       resources :todos, only: [:create]
 

db/migrate/20180227182112_add_group_id_to_boards.rb

-# This is part of a backport from EE group boards feature which a few extra steps
-# are required on this migration since it will be merged into EE which already
-# contains the group_id column.
-# like checking if the group_id column already exists before adding it.
-
 class AddGroupIdToBoards < ActiveRecord::Migration
   include Gitlab::Database::MigrationHelpers
 
@@ -11,24 +6,24 @@ class AddGroupIdToBoards < ActiveRecord::Migration
   DOWNTIME = false
 
   def up
-    unless group_id_exists?
-      add_column :boards, :group_id, :integer
-      add_foreign_key :boards, :namespaces, column: :group_id, on_delete: :cascade
-      add_concurrent_index :boards, :group_id
+    return if group_id_exists?
+
+    add_column :boards, :group_id, :integer
+    add_foreign_key :boards, :namespaces, column: :group_id, on_delete: :cascade
+    add_concurrent_index :boards, :group_id
 
-      change_column_null :boards, :project_id, true
-    end
+    change_column_null :boards, :project_id, true
   end
 
   def down
-    if group_id_exists?
-      remove_foreign_key :boards, column: :group_id
-      remove_index :boards, :group_id if index_exists? :boards, :group_id
-      remove_column :boards, :group_id
-
-      execute "DELETE from boards WHERE project_id IS NULL"
-      change_column_null :boards, :project_id, false
-    end
+    return unless group_id_exists?
+
+    remove_foreign_key :boards, column: :group_id
+    remove_index :boards, :group_id if index_exists? :boards, :group_id
+    remove_column :boards, :group_id
+
+    execute "DELETE from boards WHERE project_id IS NULL"
+    change_column_null :boards, :project_id, false
   end
 
   private

doc/user/project/issue_board.md

@@ -237,9 +237,9 @@ Issue Board, that is create/delete lists and drag issues around.
 
 ## Group Issue Board
 
-Group issue board i analogous to project-level issue board and it is accessible at the group
+Group issue board is analogous to project-level issue board and it is accessible at the group
 navigation level. A group-level issue board allows you to view all issues from all projects in that group
-(currently, it does not see issues from projects in subgroups) Similarly, you can only filter by group labels for these
+(currently, it does not see issues from projects in subgroups). Similarly, you can only filter by group labels for these
 boards. When updating milestones and labels for an issue through the sidebar update mechanism, again only
 group-level objects are available.
 

lib/api/group_boards.rb

@@ -44,7 +44,7 @@ module API
       end
       segment ':id/boards/:board_id' do
         desc 'Get the lists of a group board' do
-          detail 'Does not include backlog and closed lists. This feature was introduced in 10.4'
+          detail 'Does not include backlog and closed lists. This feature was introduced in 10.6'
           success Entities::List
         end
         params do