Improve search within group logic

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/models/project.rb

@@ -225,6 +225,7 @@ class Project < ActiveRecord::Base
   scope :with_project_feature, -> { joins('LEFT JOIN project_features ON projects.id = project_features.project_id') }
   scope :with_statistics, -> { includes(:statistics) }
   scope :with_shared_runners, -> { where(shared_runners_enabled: true) }
+  scope :inside_path, ->(path) { joins(:route).where('routes.path LIKE ?', "#{path}/%") }
 
   # "enabled" here means "not disabled". It includes private features!
   scope :with_feature_enabled, ->(feature) {

app/services/search/global_service.rb

@@ -11,8 +11,7 @@ module Search
       projects = ProjectsFinder.new.execute(current_user)
 
       if group
-        ids = group.descendants.push(group.id)
-        projects = projects.in_namespace(ids)
+        projects = projects.inside_path(group.full_path)
       end
 
       Gitlab::SearchResults.new(current_user, projects, params[:search])

spec/models/project_spec.rb

@@ -1833,6 +1833,14 @@ describe Project, models: true do
     end
   end
 
+  describe 'inside_path' do
+    let!(:project1) { create(:empty_project) }
+    let!(:project2) { create(:empty_project) }
+    let!(:path) { project1.namespace.path }
+
+    it { expect(Project.inside_path(path)).to eq([project1]) }
+  end
+
   def enable_lfs
     allow(Gitlab.config.lfs).to receive(:enabled).and_return(true)
   end