Update service uses ServiceResponse

app/controllers/concerns/wiki_actions.rb

@@ -93,9 +93,10 @@ module WikiActions
   def update
     return render('shared/wikis/empty') unless can?(current_user, :create_wiki, container)
 
-    @page = WikiPages::UpdateService.new(container: container, current_user: current_user, params: wiki_params).execute(page)
+    response = WikiPages::UpdateService.new(container: container, current_user: current_user, params: wiki_params).execute(page)
+    @page = response.payload[:page]
 
-    if page.valid?
+    if response.success?
       redirect_to(
         wiki_page_path(wiki, page),
         notice: _('Wiki was successfully updated.')

app/services/wiki_pages/update_service.rb

@@ -8,9 +8,13 @@ module WikiPages
 
       if page.update(@params)
         execute_hooks(page)
+        ServiceResponse.success(payload: { page: page })
+      else
+        ServiceResponse.error(
+          message: _('Could not udpdate wiki page'),
+          payload: { page: page }
+        )
       end
-
-      page
     end
 
     def usage_counter_action

lib/api/wikis.rb

@@ -83,11 +83,12 @@ module API
         put ':id/wikis/:slug' do
           authorize! :create_wiki, container
 
-          page = WikiPages::UpdateService
+          response = WikiPages::UpdateService
             .new(container: container, current_user: current_user, params: params)
             .execute(wiki_page)
+          page = response.payload[:page]
 
-          if page.valid?
+          if response.success?
             present page, with: Entities::WikiPage
           else
             render_validation_error!(page)

locale/gitlab.pot

@@ -7060,6 +7060,9 @@ msgstr ""
 msgid "Could not save prometheus manual configuration"
 msgstr ""
 
+msgid "Could not udpdate wiki page"
+msgstr ""
+
 msgid "Could not update the LDAP settings"
 msgstr ""
 

spec/support/shared_examples/services/wiki_pages/update_service_shared_examples.rb

@@ -19,8 +19,10 @@ RSpec.shared_examples 'WikiPages::UpdateService#execute' do |container_type|
   subject(:service) { described_class.new(container: container, current_user: user, params: opts) }
 
   it 'updates the wiki page' do
-    updated_page = service.execute(page)
+    response = service.execute(page)
+    updated_page = response.payload[:page]
 
+    expect(response).to be_success
     expect(updated_page).to be_valid
     expect(updated_page.message).to eq(opts[:message])
     expect(updated_page.content).to eq(opts[:content])
@@ -81,7 +83,11 @@ RSpec.shared_examples 'WikiPages::UpdateService#execute' do |container_type|
     end
 
     it 'reports the error' do
-      expect(service.execute(page)).to be_invalid
+      response = service.execute(page)
+      page = response.payload[:page]
+
+      expect(response).to be_error
+      expect(page).to be_invalid
         .and have_attributes(errors: be_present)
     end
   end