Update epic boards URL

ee/app/controllers/groups/epic_boards_controller.rb

+# frozen_string_literal: true
+class Groups::EpicBoardsController < Groups::BoardsController
+  include BoardsActions
+  before_action :authorize_read_board!, only: [:index]
+  def authorize_read_board!
+    access_denied! unless can?(current_user, :read_epic_board, group)
+  end
+end

ee/app/views/layouts/nav/ee/_epic_link.html.haml

@@ -21,8 +21,8 @@
         %span= _('List')
 
     - if Feature.enabled?(:epic_boards, @group)
-      = nav_link(path: 'epic_boards#show', html_options: { class: "#{active_when(params[:board_type] == 'epic') } home" }) do
-        = link_to group_boards_path(group, board_type: "epic"), title: 'Boards' do
+      = nav_link(path: ['epic_boards#index', 'epic_boards#show'], html_options: { class: "home" }) do
+        = link_to group_epic_boards_path(group), title: 'Boards' do
           %span= _('Boards')
 
     = nav_link(path: 'roadmap#show', html_options: { class: 'home' }) do

ee/config/routes/group.rb

@@ -11,6 +11,8 @@ constraints(::Constraints::GroupUrlConstrainer.new) do
       patch :override, on: :member
     end
 
+    get '/epics/boards', to: redirect('groups/%{group_id}/-/epic_boards')
+
     get '/analytics', to: redirect('groups/%{group_id}/-/analytics/value_stream_analytics')
     resource :contribution_analytics, only: [:show]
 
@@ -142,6 +144,10 @@ constraints(::Constraints::GroupUrlConstrainer.new) do
       end
     end
 
+    resources :epic_boards, only: [:index] do
+      resources :lists, module: :boards, only: [:index]
+    end
+
     namespace :security do
       resource :dashboard, only: [:show], controller: :dashboard
       resources :vulnerabilities, only: [:index]