Fix: Use case in-sensitive ordering by name for groups

app/models/concerns/sortable.rb

@@ -12,8 +12,8 @@ module Sortable
     scope :order_created_asc, -> { reorder(created_at: :asc) }
     scope :order_updated_desc, -> { reorder(updated_at: :desc) }
     scope :order_updated_asc, -> { reorder(updated_at: :asc) }
-    scope :order_name_asc, -> { reorder(name: :asc) }
-    scope :order_name_desc, -> { reorder(name: :desc) }
+    scope :order_name_asc, -> { reorder("lower(name) asc") }
+    scope :order_name_desc, -> { reorder("lower(name) desc") }
   end
 
   module ClassMethods

changelogs/unreleased/use-case-insensitive-ordering-for-dashboard-filters.yml

+---
+title: "Use case in-sensitive ordering by name for dashboard"
+merge_request: 18553
+author: "@vedharish"
+type: fixed

db/migrate/20180504195842_project_name_lower_index.rb

+# See http://doc.gitlab.com/ce/development/migration_style_guide.html
+# for more information on how to write migrations for GitLab.
+
+class ProjectNameLowerIndex < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  # Set this constant to true if this migration requires downtime.
+  DOWNTIME = false
+  INDEX_NAME = 'index_projects_on_lower_name'
+
+  disable_ddl_transaction!
+
+  def up
+    return unless Gitlab::Database.postgresql?
+
+    disable_statement_timeout
+
+    execute "CREATE INDEX CONCURRENTLY #{INDEX_NAME} ON projects (LOWER(name))"
+  end
+
+  def down
+    return unless Gitlab::Database.postgresql?
+
+    disable_statement_timeout
+
+    if supports_drop_index_concurrently?
+      execute "DROP INDEX CONCURRENTLY IF EXISTS #{INDEX_NAME}"
+    else
+      execute "DROP INDEX IF EXISTS #{INDEX_NAME}"
+    end
+  end
+end

lib/tasks/migrate/setup_postgresql.rake

@@ -8,6 +8,7 @@ task setup_postgresql: :environment do
   require Rails.root.join('db/migrate/20170503185032_index_redirect_routes_path_for_like')
   require Rails.root.join('db/migrate/20171220191323_add_index_on_namespaces_lower_name.rb')
   require Rails.root.join('db/migrate/20180215181245_users_name_lower_index.rb')
+  require Rails.root.join('db/migrate/20180504195842_project_name_lower_index.rb')
   require Rails.root.join('db/post_migrate/20180306164012_add_path_index_to_redirect_routes.rb')
 
   NamespacesProjectsPathLowerIndexes.new.up
@@ -18,5 +19,6 @@ task setup_postgresql: :environment do
   IndexRedirectRoutesPathForLike.new.up
   AddIndexOnNamespacesLowerName.new.up
   UsersNameLowerIndex.new.up
+  ProjectNameLowerIndex.new.up
   AddPathIndexToRedirectRoutes.new.up
 end

spec/models/concerns/sortable_spec.rb

+require 'spec_helper'
+
+describe Sortable do
+  describe '.order_by' do
+    let(:relation) { Group.all }
+
+    describe 'ordering by id' do
+      it 'ascending' do
+        expect(relation).to receive(:reorder).with(id: :asc)
+
+        relation.order_by('id_asc')
+      end
+
+      it 'descending' do
+        expect(relation).to receive(:reorder).with(id: :desc)
+
+        relation.order_by('id_desc')
+      end
+    end
+
+    describe 'ordering by created day' do
+      it 'ascending' do
+        expect(relation).to receive(:reorder).with(created_at: :asc)
+
+        relation.order_by('created_asc')
+      end
+
+      it 'descending' do
+        expect(relation).to receive(:reorder).with(created_at: :desc)
+
+        relation.order_by('created_desc')
+      end
+
+      it 'order by "date"' do
+        expect(relation).to receive(:reorder).with(created_at: :desc)
+
+        relation.order_by('created_date')
+      end
+    end
+
+    describe 'ordering by name' do
+      it 'ascending' do
+        expect(relation).to receive(:reorder).with("lower(name) asc")
+
+        relation.order_by('name_asc')
+      end
+
+      it 'descending' do
+        expect(relation).to receive(:reorder).with("lower(name) desc")
+
+        relation.order_by('name_desc')
+      end
+    end
+
+    describe 'ordering by Updated Time' do
+      it 'ascending' do
+        expect(relation).to receive(:reorder).with(updated_at: :asc)
+
+        relation.order_by('updated_asc')
+      end
+
+      it 'descending' do
+        expect(relation).to receive(:reorder).with(updated_at: :desc)
+
+        relation.order_by('updated_desc')
+      end
+    end
+
+    it 'does not call reorder in case of unrecognized ordering' do
+      expect(relation).not_to receive(:reorder)
+
+      relation.order_by('random_ordering')
+    end
+  end
+
+  describe 'sorting groups' do
+    def ordered_group_names(order)
+      Group.all.order_by(order).map(&:name)
+    end
+
+    let!(:ref_time) { Time.parse('2018-05-01 00:00:00') }
+    let!(:group1) { create(:group, name: 'aa', id: 1, created_at: ref_time - 15.seconds, updated_at: ref_time) }
+    let!(:group2) { create(:group, name: 'AAA', id: 2, created_at: ref_time - 10.seconds, updated_at: ref_time - 5.seconds) }
+    let!(:group3) { create(:group, name: 'BB', id: 3, created_at: ref_time - 5.seconds, updated_at: ref_time - 10.seconds) }
+    let!(:group4) { create(:group, name: 'bbb', id: 4, created_at: ref_time, updated_at: ref_time - 15.seconds) }
+
+    it 'sorts groups by id' do
+      expect(ordered_group_names('id_asc')).to eq(%w(aa AAA BB bbb))
+      expect(ordered_group_names('id_desc')).to eq(%w(bbb BB AAA aa))
+    end
+
+    it 'sorts groups by name via case-insentitive comparision' do
+      expect(ordered_group_names('name_asc')).to eq(%w(aa AAA BB bbb))
+      expect(ordered_group_names('name_desc')).to eq(%w(bbb BB AAA aa))
+    end
+
+    it 'sorts groups by created_at' do
+      expect(ordered_group_names('created_asc')).to eq(%w(aa AAA BB bbb))
+      expect(ordered_group_names('created_desc')).to eq(%w(bbb BB AAA aa))
+      expect(ordered_group_names('created_date')).to eq(%w(bbb BB AAA aa))
+    end
+
+    it 'sorts groups by updated_at' do
+      expect(ordered_group_names('updated_asc')).to eq(%w(bbb BB AAA aa))
+      expect(ordered_group_names('updated_desc')).to eq(%w(aa AAA BB bbb))
+    end
+  end
+end