Add project_ids to search_controller

app/controllers/search_controller.rb

@@ -143,6 +143,7 @@ class SearchController < ApplicationController
     payload[:metadata]['meta.search.filters.confidential'] = params[:confidential]
     payload[:metadata]['meta.search.filters.state'] = params[:state]
     payload[:metadata]['meta.search.force_search_results'] = params[:force_search_results]
+    payload[:metadata]['meta.search.project_ids'] = params[:project_ids]
 
     if search_service.abuse_detected?
       payload[:metadata]['abuse.confidence'] = Gitlab::Abuse.confidence(:certain)

spec/controllers/search_controller_spec.rb

@@ -396,9 +396,10 @@ RSpec.describe SearchController do
           expect(payload[:metadata]['meta.search.force_search_results']).to eq('true')
           expect(payload[:metadata]['meta.search.filters.confidential']).to eq('true')
           expect(payload[:metadata]['meta.search.filters.state']).to eq('true')
+          expect(payload[:metadata]['meta.search.project_ids']).to eq('true')
         end
 
-        get :show, params: { scope: 'issues', search: 'hello world', group_id: '123', project_id: '456', confidential: true, state: true, force_search_results: true }
+        get :show, params: { scope: 'issues', search: 'hello world', group_id: '123', project_id: '456',project_ids:['456','789'], confidential: true, state: true, force_search_results: true }
       end
 
       it 'appends the default scope in meta.search.scope' do