Add new routes and helper for tabs

app/controllers/editions_controller.rb

@@ -16,6 +16,26 @@ def show
     render action: "show"
   end
 
+  def metadata
+    render action: "show"
+  end
+
+  def history
+    render action: "show"
+  end
+
+  def admin
+    render action: "show"
+  end
+
+  def linking
+    render action: "show"
+  end
+
+  def unpublish
+    render action: "show"
+  end
+
 protected
 
   def setup_view_paths

app/helpers/tabbed_nav_helper.rb

@@ -0,0 +1,32 @@
+module TabbedNavHelper
+  def edition_nav_items(edition)
+    nav_items = []
+    items = %w[edit tagging metadata history admin related_external_links unpublish]
+
+    items.each do |item|
+      nav_items << standard_nav_items(item, edition)
+    end
+
+    nav_items.flatten
+  end
+
+  def standard_nav_items(item, edition)
+    url = item.eql?("edit") ? url_for([:edition, { id: edition.id }]) : url_for([:edition, { action: item, id: edition.id }])
+
+    label = Edition::Tab[item].title
+    href = url
+    current = request.path == url
+
+    edit_nav_item(label, href, current)
+  end
+
+  def edit_nav_item(label, href, current)
+    [
+      {
+        label:,
+        href:,
+        current:,
+      },
+    ]
+  end
+end

app/views/editions/_secondary_navigation.html.erb

@@ -1,35 +1,4 @@
 <%= render "govuk_publishing_components/components/secondary_navigation", {
   aria_label: "Document navigation",
-  items: [
-    {
-      label: "Edit",
-      href: "#1",
-      current: true,
-    },
-    {
-      label: "Tagging",
-      href: "#2",
-    },
-    {
-      label: "Metadata",
-      href: "#3"
-    },
-    {
-      label: "History and notes",
-      href: "#1",
-      current: true,
-    },
-    {
-      label: "Admin",
-      href: "#2"
-    },
-    {
-      label: "Related external links",
-      href: "#3",
-    },
-    {
-      label: "Unpublish",
-      href: "#3"
-    }
-  ]
+  items: edition_nav_items(@edition),
 } %>

config/routes.rb

@@ -17,7 +17,16 @@
   resources :artefacts, only: %i[new create update]
 
   constraints FeatureConstraint.new("design_system_edit") do
-    resources :editions, only: %i[show index]
+    resources :editions do
+      member do
+        get "metadata"
+        get "history"
+        get "admin"
+        get "related_external_links", to: "editions#linking"
+        get "tagging", to: "editions#linking"
+        get "unpublish"
+      end
+    end
   end
 
   get "editions/:id" => "legacy_editions#show"

test/unit/helpers/admin/tabbed_nav_helper_test.rb

@@ -0,0 +1,47 @@
+require "test_helper"
+
+class TabbedNavHelperTest < ActionView::TestCase
+  test "#secondary_navigation_tabs_items for edit edition page" do
+    resource = FactoryBot.create(:guide_edition, title: "Edit page title", state: "draft")
+
+    expected_output = [
+      {
+        label: "Edit",
+        href: "/editions/#{resource.id}",
+        current: false,
+      },
+      {
+        label: "Tagging",
+        href: "/editions/#{resource.id}/tagging",
+        current: false,
+      },
+      {
+        label: "Metadata",
+        href: "/editions/#{resource.id}/metadata",
+        current: false,
+      },
+      {
+        label: "History and notes",
+        href: "/editions/#{resource.id}/history",
+        current: false,
+      },
+      {
+        label: "Admin",
+        href: "/editions/#{resource.id}/admin",
+        current: false,
+      },
+      {
+        label: "Related external links",
+        href: "/editions/#{resource.id}/related_external_links",
+        current: false,
+      },
+      {
+        label: "Unpublish",
+        href: "/editions/#{resource.id}/unpublish",
+        current: false,
+      },
+    ]
+
+    assert_equal expected_output, edition_nav_items(resource)
+  end
+end