ProjectsFinder: add parameter 'topic' in place of 'tag' [RUN ALL RSPEC]

app/finders/projects_finder.rb

@@ -14,7 +14,8 @@
 #     starred: boolean
 #     sort: string
 #     visibility_level: int
-#     tags: string[]
+#     tag: string[] - deprecated, use 'topic' instead
+#     topic: string[]
 #     personal: boolean
 #     search: string
 #     search_namespaces: boolean
@@ -37,6 +38,8 @@ class ProjectsFinder < UnionFinder
     @params = params
     @current_user = current_user
     @project_ids_relation = project_ids_relation
+
+    @params[:topic] ||= @params.delete(:tag) if @params[:tag].present?
   end
 
   def execute
@@ -76,7 +79,7 @@ class ProjectsFinder < UnionFinder
     collection = by_starred(collection)
     collection = by_trending(collection)
     collection = by_visibility_level(collection)
-    collection = by_tags(collection)
+    collection = by_topics(collection)
     collection = by_search(collection)
     collection = by_archived(collection)
     collection = by_custom_attributes(collection)
@@ -176,8 +179,8 @@ class ProjectsFinder < UnionFinder
   end
   # rubocop: enable CodeReuse/ActiveRecord
 
-  def by_tags(items)
-    params[:tag].present? ? items.tagged_with(params[:tag]) : items
+  def by_topics(items)
+    params[:topic].present? ? items.tagged_with(params[:topic]) : items
   end
 
   def by_search(items)

app/views/projects/_home_panel.html.haml

@@ -25,14 +25,14 @@
             %span.access-request-links.gl-ml-3
               = render 'shared/members/access_request_links', source: @project
 
-          - if @project.tag_list.present?
-            = cache_if(cache_enabled, [@project, :tag_list], expires_in: 1.day) do
+          - if @project.topic_list.present?
+            = cache_if(cache_enabled, [@project, :topic_list], expires_in: 1.day) do
               %span.home-panel-topic-list.mt-2.w-100.d-inline-flex.gl-font-base.gl-font-weight-normal.gl-align-items-center
                 = sprite_icon('tag', css_class: 'icon gl-relative gl-mr-2')
 
                 - @project.topics_to_show.each do |topic|
                   - project_topics_classes = "badge badge-pill badge-secondary gl-mr-2"
-                  - explore_project_topic_path = explore_projects_path(tag: topic)
+                  - explore_project_topic_path = explore_projects_path(topic: topic)
                   - if topic.length > max_project_topic_length
                     %a{ class: "#{ project_topics_classes } str-truncated-30 has-tooltip", data: { container: "body" }, title: topic, href: explore_project_topic_path, itemprop: 'keywords' }
                       = topic.titleize

lib/api/helpers.rb

@@ -599,6 +599,7 @@ module API
                  :custom_attributes,
                  :last_activity_after,
                  :last_activity_before,
+                 :topic,
                  :repository_storage)
           .symbolize_keys
           .compact
@@ -611,7 +612,6 @@ module API
       finder_params[:user] = params.delete(:user) if params[:user]
       finder_params[:id_after] = sanitize_id_param(params[:id_after]) if params[:id_after]
       finder_params[:id_before] = sanitize_id_param(params[:id_before]) if params[:id_before]
-      finder_params[:tag] = params[:topic] if params[:topic].present?
       finder_params
     end
 

spec/features/projects_spec.rb

@@ -128,23 +128,23 @@ RSpec.describe 'Project' do
     end
 
     it 'shows project topics' do
-      project.update_attribute(:tag_list, 'topic1')
+      project.update_attribute(:topic_list, 'topic1')
 
       visit path
 
       expect(page).to have_css('.home-panel-topic-list')
-      expect(page).to have_link('Topic1', href: explore_projects_path(tag: 'topic1'))
+      expect(page).to have_link('Topic1', href: explore_projects_path(topic: 'topic1'))
     end
 
-    it 'shows up to 3 project tags' do
-      project.update_attribute(:tag_list, 'topic1, topic2, topic3, topic4')
+    it 'shows up to 3 project topics' do
+      project.update_attribute(:topic_list, 'topic1, topic2, topic3, topic4')
 
       visit path
 
       expect(page).to have_css('.home-panel-topic-list')
-      expect(page).to have_link('Topic1', href: explore_projects_path(tag: 'topic1'))
-      expect(page).to have_link('Topic2', href: explore_projects_path(tag: 'topic2'))
-      expect(page).to have_link('Topic3', href: explore_projects_path(tag: 'topic3'))
+      expect(page).to have_link('Topic1', href: explore_projects_path(topic: 'topic1'))
+      expect(page).to have_link('Topic2', href: explore_projects_path(topic: 'topic2'))
+      expect(page).to have_link('Topic3', href: explore_projects_path(topic: 'topic3'))
       expect(page).to have_content('+ 1 more')
     end
   end

spec/finders/projects_finder_spec.rb

@@ -137,9 +137,9 @@ RSpec.describe ProjectsFinder do
         end
       end
 
-      describe 'filter by tags' do
+      describe 'filter by tags (deprecated)' do
         before do
-          public_project.tag_list = 'foo'
+          public_project.topic_list = 'foo'
           public_project.save!
         end
 
@@ -148,6 +148,17 @@ RSpec.describe ProjectsFinder do
         it { is_expected.to eq([public_project]) }
       end
 
+      describe 'filter by topics' do
+        before do
+          public_project.topic_list = 'foo'
+          public_project.save!
+        end
+
+        let(:params) { { topic: 'foo' } }
+
+        it { is_expected.to eq([public_project]) }
+      end
+
       describe 'filter by personal' do
         let!(:personal_project) { create(:project, namespace: user.namespace) }
         let(:params) { { personal: true } }