Fix bug when reopening milestone from index page

app/views/shared/milestones/_milestone.html.haml

@@ -52,7 +52,7 @@
 
             = link_to 'Close Milestone', project_milestone_path(@project, milestone, milestone: {state_event: :close }), method: :put, remote: true, class: "btn btn-sm btn-close btn-grouped"
           - unless milestone.active?
-            = link_to 'Reopen Milestone', project_milestone_path(@project, milestone, {state_event: :activate }), method: :put, class: "btn btn-grouped btn-reopen"
+            = link_to 'Reopen Milestone', project_milestone_path(@project, milestone, milestone: {state_event: :activate }), method: :put, class: "btn btn-grouped btn-reopen"
         - if @group
           - if can?(current_user, :admin_milestone, @group)
             - if milestone.closed?

changelogs/unreleased/49910-reopening-a-closed-milestone-from-the-closed-milestones-page-fails2.yml

+---
+title: Fix bug when reopening milestone from index page
+merge_request:
+author:
+type: fixed

spec/features/milestone_spec.rb

@@ -122,4 +122,32 @@ describe 'Milestone' do
       expect(page).to have_selector('.popover')
     end
   end
+
+  describe 'reopen closed milestones' do
+    before do
+      create(:milestone, :closed, project: project)
+    end
+
+    describe 'group milestones page' do
+      it 'reopens the milestone' do
+        visit group_milestones_path(group, { state: 'closed' })
+
+        click_link 'Reopen Milestone'
+
+        expect(page).not_to have_selector('.status-box-closed')
+        expect(page).to have_selector('.status-box-open')
+      end
+    end
+
+    describe 'project milestones page' do
+      it 'reopens the milestone' do
+        visit project_milestones_path(project, { state: 'closed' })
+
+        click_link 'Reopen Milestone'
+
+        expect(page).not_to have_selector('.status-box-closed')
+        expect(page).to have_selector('.status-box-open')
+      end
+    end
+  end
 end