Fix updating emails for group notifications

This MR fixes the bug that causes
404 error while trying to update
email for group notifications.

Changelog: fixed

app/views/profiles/notifications/_group_settings.html.haml

@@ -13,5 +13,5 @@
       .js-vue-notification-dropdown{ data: { disabled: emails_disabled.to_s, dropdown_items: notification_dropdown_items(setting).to_json, notification_level: setting.level, group_id: group.id, container_class: 'gl-mr-3', show_label: "true" } }
   .table-section.section-30
-    = form_for setting, url: profile_notifications_group_path(group), method: :put, html: { class: 'update-notifications gl-display-flex' } do |f|
+    = form_for setting, url: profile_group_notifications_path(group), method: :put, html: { class: 'update-notifications gl-display-flex' } do |f|
       = f.select :notification_email, @user.public_verified_emails, { include_blank: 'Global notification email' }, class: 'select2 js-group-notification-email'

config/routes/profile.rb

@@ -22,7 +22,14 @@
     end
     resource :notifications, only: [:show, :update] do
-      resources :groups, only: :update, constraints: { id: Gitlab::PathRegex.full_namespace_route_regex }
+      scope(path: 'groups/*id',
+        id: Gitlab::PathRegex.full_namespace_route_regex,
+        as: :group,
+        controller: :groups,
+        constraints: { format: /(html|json)/ }) do
+        patch '/', action: :update
+        put '/', action: :update
+      end
     end
     resource :password, only: [:new, :create, :edit, :update] do

spec/routing/notifications_routing_spec.rb

@@ -12,7 +12,8 @@
   end
   it 'routes to group #update' do
-    expect(put("/-/profile/notifications/groups/gitlab-org")).to route_to("profiles/groups#update", id: 'gitlab-org')
-    expect(put("/-/profile/notifications/groups/gitlab.org")).to route_to("profiles/groups#update", id: 'gitlab.org')
+    expect(put("/-/profile/groups/gitlab-org/notifications")).to route_to("profiles/groups#update", id: 'gitlab-org')
+    expect(put("/-/profile/groups/gitlab.org/notifications/")).to route_to("profiles/groups#update", id: 'gitlab.org')
+    expect(put("/-/profile/groups/gitlab.org/gitlab/notifications")).to route_to("profiles/groups#update", id: 'gitlab.org/gitlab')
   end
 end