Only filter for active projects

app/helpers/projects_helper.rb

@@ -225,6 +225,14 @@ module ProjectsHelper
     work_packages_path query_props: generator.call
   end
 
+  def gantt_portfolio_project_ids(project_scope)
+    project_scope
+      .where(active: true)
+      .select(:id)
+      .uniq
+      .pluck(:id)
+  end
+
   def gantt_portfolio_title
     title = t('projects.index.open_as_gantt_title')
 

app/views/projects/index.html.erb

@@ -53,10 +53,10 @@ See docs/COPYRIGHT.rdoc for more details.
     <%= link_to t(:label_overall_activity), activities_path, class: 'button' %>
   </li>
   <li class="toolbar-item">
-    <% all_projects = @projects.select(:id).uniq.pluck(:id) %>
-    <%= link_to gantt_portfolio_query_link(all_projects),
-                disabled: all_projects.empty?,
-                class: "button #{all_projects.empty? ? '-disabled' : ''}",
+    <% gantt_project_ids = gantt_portfolio_project_ids(@projects) %>
+    <%= link_to gantt_portfolio_query_link(gantt_project_ids),
+                disabled: gantt_project_ids.empty?,
+                class: "button #{gantt_project_ids.empty? ? '-disabled' : ''}",
                 title: gantt_portfolio_title,
                 target: '_blank' do %>
       <%= op_icon("button--icon icon-view-timeline") %>

spec/features/projects/projects_portfolio_spec.rb

@@ -40,6 +40,7 @@ describe 'Projects index page',
   let(:columns) { ::Components::WorkPackages::Columns.new }
   let(:filters) { ::Components::WorkPackages::Filters.new }
   let(:wp_table) { ::Pages::WorkPackagesTable.new }
+  let(:projects_page) { Pages::Projects::Index.new }
 
   before do
     login_as admin
@@ -48,6 +49,20 @@ describe 'Projects index page',
   describe 'with no projects on index' do
     it 'disables the button' do
       visit projects_path
+
+      projects_page.open_filters
+      projects_page.filter_by_active('yes')
+
+      expect(page).to have_selector('.button.-disabled', text: 'Open as Gantt view', wait: 10)
+    end
+  end
+
+  describe 'with only an archived project on index' do
+    let!(:project) { FactoryBot.create :project, active: false }
+
+    it 'disables the button' do
+      visit projects_path
+
       expect(page).to have_selector('.button.-disabled', text: 'Open as Gantt view')
     end
   end