Allows to sort projects by most stars

app/helpers/sorting_helper.rb

@@ -35,7 +35,8 @@ module SortingHelper
       sort_value_name             => sort_title_name,
       sort_value_oldest_activity  => sort_title_oldest_activity,
       sort_value_oldest_created   => sort_title_oldest_created,
-      sort_value_recently_created => sort_title_recently_created
+      sort_value_recently_created => sort_title_recently_created,
+      sort_value_most_stars       => sort_title_most_stars
     }
     if current_controller?('admin/projects')
@@ -246,6 +247,10 @@ module SortingHelper
     s_('SortOptions|Last Contact')
   end
+  def sort_title_most_stars
+    s_('SortOptions|Most stars')
+  end
+
   # Values.
   def sort_value_access_level_asc
     'access_level_asc'
@@ -370,4 +375,8 @@ module SortingHelper
   def sort_value_contacted_date
     'contacted_asc'
   end
+
+  def sort_value_most_stars
+    'stars_desc'
+  end
 end

app/models/project.rb

@@ -331,7 +331,7 @@ class Project < ActiveRecord::Base
   # last_activity_at is throttled every minute, but last_repository_updated_at is updated with every push
   scope :sorted_by_activity, -> { reorder("GREATEST(COALESCE(last_activity_at, '1970-01-01'), COALESCE(last_repository_updated_at, '1970-01-01')) DESC") }
-  scope :sorted_by_stars, -> { reorder('projects.star_count DESC') }
+  scope :sorted_by_stars, -> { reorder(star_count: :desc) }
   scope :in_namespace, ->(namespace_ids) { where(namespace_id: namespace_ids) }
   scope :personal, ->(user) { where(namespace_id: user.namespace_id) }
@@ -481,6 +481,8 @@ class Project < ActiveRecord::Base
         reorder(last_activity_at: :desc)
       when 'latest_activity_asc'
         reorder(last_activity_at: :asc)
+      when 'stars_desc'
+        sorted_by_stars
       else
         order_by(method)
       end

changelogs/unreleased/add-most-stars-for-filter-option.yml

+---
+title: Allows to sort projects by most stars
+merge_request: 21762
+author: Jacopo Beschi @jacopo-beschi
+type: added

locale/gitlab.pot

@@ -5551,6 +5551,9 @@ msgstr ""
 msgid "SortOptions|Most popular"
 msgstr ""
+msgid "SortOptions|Most stars"
+msgstr ""
+
 msgid "SortOptions|Name"
 msgstr ""

spec/features/dashboard/projects_spec.rb

@@ -103,6 +103,14 @@ describe 'Dashboard Projects' do
       expect(page).not_to have_content(project.name)
       expect(page).to have_content(project3.name)
     end
+
+    it 'sorts projects by most stars when sorting by most stars' do
+      project_with_most_stars = create(:project, namespace: user.namespace, star_count: 10)
+
+      visit dashboard_projects_path(sort: :stars_desc)
+
+      expect(first('.project-row')).to have_content(project_with_most_stars.title)
+    end
   end
   context 'when on Starred projects tab' do

spec/models/project_spec.rb

@@ -1072,6 +1072,18 @@ describe Project do
     it { expect(project.builds_enabled?).to be_truthy }
   end
+  describe '.sort_by_attribute' do
+    it 'reorders the input relation by start count desc' do
+      project1 = create(:project, star_count: 2)
+      project2 = create(:project, star_count: 1)
+      project3 = create(:project)
+
+      projects = described_class.sort_by_attribute(:stars_desc)
+
+      expect(projects).to eq([project1, project2, project3])
+    end
+  end
+
   describe '.with_shared_runners' do
     subject { described_class.with_shared_runners }