Add active_when helper

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/24036

app/helpers/application_helper.rb

@@ -296,4 +296,13 @@ module ApplicationHelper
   def page_class
     "issue-boards-page" if current_controller?(:boards)
   end
+
+  # Returns active css class when condition returns true
+  # otherwise returns nil.
+  #
+  # Example:
+  #   %li{ class: active_when(params[:filter] == '1') }
+  def active_when(condition)
+    'active' if condition
+  end
 end

app/views/admin/logs/show.html.haml

@@ -8,15 +8,14 @@
 %div{ class: container_class }
   %ul.nav-links.log-tabs
     - loggers.each do |klass|
-      %li{ class: (klass == Gitlab::GitLogger ? 'active' : '') }>
+      %li{ class: active_when(klass == Gitlab::GitLogger) }>
         = link_to klass::file_name, "##{klass::file_name_noext}",
             'data-toggle' => 'tab'
   .row-content-block
     To prevent performance issues admin logs output the last 2000 lines
   .tab-content
     - loggers.each do |klass|
-      .tab-pane{ class: (klass == Gitlab::GitLogger ? 'active' : ''),
-          id: klass::file_name_noext }
+      .tab-pane{ class: active_when(klass == Gitlab::GitLogger), id: klass::file_name_noext }
         .file-holder#README
           .js-file-title.file-title
             %i.fa.fa-file

app/views/admin/projects/index.html.haml

@@ -48,13 +48,13 @@
         = link_to admin_projects_path do
           All
 
-      = nav_link(html_options: { class: params[:visibility_level] == Gitlab::VisibilityLevel::PRIVATE.to_s ? 'active' : '' }) do
+      = nav_link(html_options: { class: active_when(params[:visibility_level] == Gitlab::VisibilityLevel::PRIVATE.to_s) }) do
         = link_to admin_projects_path(visibility_level: Gitlab::VisibilityLevel::PRIVATE) do
           Private
-      = nav_link(html_options: { class: params[:visibility_level] == Gitlab::VisibilityLevel::INTERNAL.to_s ? 'active' : '' }) do
+      = nav_link(html_options: { class: active_when(params[:visibility_level] == Gitlab::VisibilityLevel::INTERNAL.to_s) }) do
         = link_to admin_projects_path(visibility_level: Gitlab::VisibilityLevel::INTERNAL) do
           Internal
-      = nav_link(html_options: { class: params[:visibility_level] == Gitlab::VisibilityLevel::PUBLIC.to_s ? 'active' : '' }) do
+      = nav_link(html_options: { class: active_when(params[:visibility_level] == Gitlab::VisibilityLevel::PUBLIC.to_s) }) do
         = link_to admin_projects_path(visibility_level: Gitlab::VisibilityLevel::PUBLIC) do
           Public
 

app/views/admin/users/index.html.haml

@@ -38,31 +38,31 @@
     .nav-block
       %ul.nav-links.wide.scrolling-tabs.white.scrolling-tabs
         .fade-left
-        = nav_link(html_options: { class: ('active' unless params[:filter]) }) do
+        = nav_link(html_options: { class: active_when(params[:filter].nil?) }) do
           = link_to admin_users_path do
             Active
             %small.badge= number_with_delimiter(User.active.count)
-        = nav_link(html_options: { class: ('active' if params[:filter] == 'admins') }) do
+        = nav_link(html_options: { class: active_when(params[:filter] == 'admins') }) do
           = link_to admin_users_path(filter: "admins") do
             Admins
             %small.badge= number_with_delimiter(User.admins.count)
-        = nav_link(html_options: { class: "#{'active' if params[:filter] == 'two_factor_enabled'} filter-two-factor-enabled" }) do
+        = nav_link(html_options: { class: "#{active_when(params[:filter] == 'two_factor_enabled')} filter-two-factor-enabled" }) do
           = link_to admin_users_path(filter: 'two_factor_enabled') do
             2FA Enabled
             %small.badge= number_with_delimiter(User.with_two_factor.count)
-        = nav_link(html_options: { class: "#{'active' if params[:filter] == 'two_factor_disabled'} filter-two-factor-disabled" }) do
+        = nav_link(html_options: { class: "#{active_when(params[:filter] == 'two_factor_disabled')} filter-two-factor-disabled" }) do
           = link_to admin_users_path(filter: 'two_factor_disabled') do
             2FA Disabled
             %small.badge= number_with_delimiter(User.without_two_factor.count)
-        = nav_link(html_options: { class: ('active' if params[:filter] == 'external') }) do
+        = nav_link(html_options: { class: active_when(params[:filter] == 'external') }) do
           = link_to admin_users_path(filter: 'external') do
             External
             %small.badge= number_with_delimiter(User.external.count)
-        = nav_link(html_options: { class: ('active' if params[:filter] == 'blocked') }) do
+        = nav_link(html_options: { class: active_when(params[:filter] == 'blocked') }) do
           = link_to admin_users_path(filter: "blocked") do
             Blocked
             %small.badge= number_with_delimiter(User.blocked.count)
-        = nav_link(html_options: { class: ('active' if params[:filter] == 'wop') }) do
+        = nav_link(html_options: { class: active_when(params[:filter] == 'wop') }) do
           = link_to admin_users_path(filter: "wop") do
             Without projects
             %small.badge= number_with_delimiter(User.without_projects.count)

app/views/dashboard/_activity_head.html.haml

 .top-area
   %ul.nav-links
-    %li{ class: ("active" unless params[:filter]) }>
+    %li{ class: active_when(params[:filter].nil?) }>
       = link_to activity_dashboard_path, class: 'shortcuts-activity', data: {placement: 'right'} do
         Your Projects
-    %li{ class: ("active" if params[:filter] == 'starred') }>
+    %li{ class: active_when(params[:filter] == 'starred') }>
       = link_to activity_dashboard_path(filter: 'starred'), data: {placement: 'right'} do
         Starred Projects

app/views/dashboard/todos/index.html.haml

@@ -4,15 +4,13 @@
 - if current_user.todos.any?
   .top-area
     %ul.nav-links
-      - todo_pending_active = ('active' if params[:state].blank? || params[:state] == 'pending')
-      %li{ class: "todos-pending #{todo_pending_active}" }>
+      %li.todos-pending{ class: active_when(params[:state].blank? || params[:state] == 'pending') }>
         = link_to todos_filter_path(state: 'pending') do
           %span
             To do
           %span.badge
             = number_with_delimiter(todos_pending_count)
-      - todo_done_active = ('active' if params[:state] == 'done')
-      %li{ class: "todos-done #{todo_done_active}" }>
+      %li.todos-done{ class: active_when(params[:state] == 'done') }>
         = link_to todos_filter_path(state: 'done') do
           %span
             Done

app/views/devise/shared/_signin_box.html.haml

@@ -4,7 +4,7 @@
       .login-body
         = render 'devise/sessions/new_crowd'
   - @ldap_servers.each_with_index do |server, i|
-    .login-box.tab-pane{ id: "#{server['provider_name']}", role: 'tabpanel', class: (:active if i.zero? && !crowd_enabled?) }
+    .login-box.tab-pane{ id: "#{server['provider_name']}", role: 'tabpanel', class: active_when(i.zero? && !crowd_enabled?) }
       .login-body
         = render 'devise/sessions/new_ldap', server: server
   - if signin_enabled?

app/views/devise/shared/_tabs_ldap.html.haml

@@ -3,7 +3,7 @@
     %li.active
       = link_to "Crowd", "#crowd", 'data-toggle' => 'tab'
   - @ldap_servers.each_with_index do |server, i|
-    %li{ class: (:active if i.zero? && !crowd_enabled?) }
+    %li{ class: active_when(i.zero? && !crowd_enabled?) }
       = link_to server['label'], "##{server['provider_name']}",  'data-toggle' => 'tab'
   - if signin_enabled?
     %li

app/views/explore/projects/_filter.html.haml

@@ -13,7 +13,7 @@
         = link_to filter_projects_path(visibility_level: nil) do
           Any
       - Gitlab::VisibilityLevel.values.each do |level|
-        %li{ class: (level.to_s == params[:visibility_level]) ? 'active' : 'light' }
+        %li{ class: active_when(level.to_s == params[:visibility_level]) || 'light' }
           = link_to filter_projects_path(visibility_level: level) do
             = visibility_level_icon(level)
             = visibility_level_label(level)
@@ -34,7 +34,7 @@
           Any
 
       - @tags.each do |tag|
-        %li{ class: (tag.name == params[:tag]) ? 'active' : 'light' }
+        %li{ class: active_when(tag.name == params[:tag]) || 'light' }
           = link_to filter_projects_path(tag: tag.name) do
             = icon('tag')
             = tag.name

app/views/kaminari/gitlab/_page.html.haml

@@ -6,5 +6,5 @@
 -#    total_pages:   total number of pages
 -#    per_page:      number of items to fetch per page
 -#    remote:        data-remote
-%li{ class: "page#{' active' if page.current?}#{' sibling' if page.next? || page.prev?}" }
+%li.page{ class: [active_when(page.current?), ('sibling' if page.next? || page.prev?)] }
   = link_to page, url, { remote: remote, rel: page.next? ? 'next' : page.prev? ? 'prev' : nil }

app/views/projects/pipelines/index.html.haml

@@ -5,23 +5,23 @@
 %div{ class: container_class }
   .top-area
     %ul.nav-links
-      %li{ class: ('active' if @scope.nil?) }>
+      %li{ class: active_when(@scope.nil?) }>
         = link_to project_pipelines_path(@project) do
           All
           %span.badge.js-totalbuilds-count
             = number_with_delimiter(@pipelines_count)
 
-      %li{ class: ('active' if @scope == 'running') }>
+      %li{ class: active_when(@scope == 'running') }>
         = link_to project_pipelines_path(@project, scope: :running) do
           Running
           %span.badge.js-running-count
             = number_with_delimiter(@running_or_pending_count)
 
-      %li{ class: ('active' if @scope == 'branches') }>
+      %li{ class: active_when(@scope == 'branches') }>
         = link_to project_pipelines_path(@project, scope: :branches) do
           Branches
 
-      %li{ class: ('active' if @scope == 'tags') }>
+      %li{ class: active_when(@scope == 'tags') }>
         = link_to project_pipelines_path(@project, scope: :tags) do
           Tags
 

app/views/projects/wikis/_sidebar_wiki_page.html.haml

-%li{ class: params[:id] == wiki_page.slug ? 'active' : '' }
+%li{ class: active_when(params[:id] == wiki_page.slug) }
   = link_to namespace_project_wiki_path(@project.namespace, @project, wiki_page) do
     = wiki_page.title.capitalize

app/views/search/_category.html.haml

 %ul.nav-links.search-filter
   - if @project
-    %li{ class: ("active" if @scope == 'blobs') }
+    %li{ class: active_when(@scope == 'blobs') }
       = link_to search_filter_path(scope: 'blobs') do
         Code
         %span.badge
           = @search_results.blobs_count
-    %li{ class: ("active" if @scope == 'issues') }
+    %li{ class: active_when(@scope == 'issues') }
       = link_to search_filter_path(scope: 'issues') do
         Issues
         %span.badge
           = @search_results.issues_count
-    %li{ class: ("active" if @scope == 'merge_requests') }
+    %li{ class: active_when(@scope == 'merge_requests') }
       = link_to search_filter_path(scope: 'merge_requests') do
         Merge requests
         %span.badge
           = @search_results.merge_requests_count
-    %li{ class: ("active" if @scope == 'milestones') }
+    %li{ class: active_when(@scope == 'milestones') }
       = link_to search_filter_path(scope: 'milestones') do
         Milestones
         %span.badge
           = @search_results.milestones_count
-    %li{ class: ("active" if @scope == 'notes') }
+    %li{ class: active_when(@scope == 'notes') }
       = link_to search_filter_path(scope: 'notes') do
         Comments
         %span.badge
           = @search_results.notes_count
-    %li{ class: ("active" if @scope == 'wiki_blobs') }
+    %li{ class: active_when(@scope == 'wiki_blobs') }
       = link_to search_filter_path(scope: 'wiki_blobs') do
         Wiki
         %span.badge
           = @search_results.wiki_blobs_count
-    %li{ class: ("active" if @scope == 'commits') }
+    %li{ class: active_when(@scope == 'commits') }
       = link_to search_filter_path(scope: 'commits') do
         Commits
         %span.badge
           = @search_results.commits_count
 
   - elsif @show_snippets
-    %li{ class: ("active" if @scope == 'snippet_blobs') }
+    %li{ class: active_when(@scope == 'snippet_blobs') }
       = link_to search_filter_path(scope: 'snippet_blobs', snippets: true, group_id: nil, project_id: nil) do
         Snippet Contents
         %span.badge
           = @search_results.snippet_blobs_count
-    %li{ class: ("active" if @scope == 'snippet_titles') }
+    %li{ class: active_when(@scope == 'snippet_titles') }
       = link_to search_filter_path(scope: 'snippet_titles', snippets: true, group_id: nil, project_id: nil) do
         Titles and Filenames
         %span.badge
           = @search_results.snippet_titles_count
 
   - else
-    %li{ class: ("active" if @scope == 'projects') }
+    %li{ class: active_when(@scope == 'projects') }
       = link_to search_filter_path(scope: 'projects') do
         Projects
         %span.badge
           = @search_results.projects_count
-    %li{ class: ("active" if @scope == 'issues') }
+    %li{ class: active_when(@scope == 'issues') }
       = link_to search_filter_path(scope: 'issues') do
         Issues
         %span.badge
           = @search_results.issues_count
-    %li{ class: ("active" if @scope == 'merge_requests') }
+    %li{ class: active_when(@scope == 'merge_requests') }
       = link_to search_filter_path(scope: 'merge_requests') do
         Merge requests
         %span.badge
           = @search_results.merge_requests_count
-    %li{ class: ("active" if @scope == 'milestones') }
+    %li{ class: active_when(@scope == 'milestones') }
       = link_to search_filter_path(scope: 'milestones') do
         Milestones
         %span.badge

app/views/shared/builds/_tabs.html.haml

 %ul.nav-links
-  %li{ class: ('active' if scope.nil?) }>
+  %li{ class: active_when(scope.nil?) }>
     = link_to build_path_proc.call(nil) do
       All
       %span.badge.js-totalbuilds-count
         = number_with_delimiter(all_builds.count(:id))
 
-  %li{ class: ('active' if scope == 'pending') }>
+  %li{ class: active_when(scope == 'pending') }>
     = link_to build_path_proc.call('pending') do
       Pending
       %span.badge
         = number_with_delimiter(all_builds.pending.count(:id))
 
-  %li{ class: ('active' if scope == 'running') }>
+  %li{ class: active_when(scope == 'running') }>
     = link_to build_path_proc.call('running') do
       Running
       %span.badge
         = number_with_delimiter(all_builds.running.count(:id))
 
-  %li{ class: ('active' if scope == 'finished') }>
+  %li{ class: active_when(scope == 'finished') }>
     = link_to build_path_proc.call('finished') do
       Finished
       %span.badge

app/views/shared/issuable/_nav.html.haml

@@ -3,23 +3,23 @@
 - issuables = @issues || @merge_requests
 
 %ul.nav-links.issues-state-filters
-  %li{ class: ("active" if params[:state] == 'opened') }>
+  %li{ class: active_when(params[:state] == 'opened') }>
     = link_to page_filter_path(state: 'opened', label: true), id: 'state-opened', title: "Filter by #{page_context_word} that are currently opened." do
       #{issuables_state_counter_text(type, :opened)}
 
   - if type == :merge_requests
-    %li{ class: ("active" if params[:state] == 'merged') }>
+    %li{ class: active_when(params[:state] == 'merged') }>
       = link_to page_filter_path(state: 'merged', label: true), id: 'state-merged', title: 'Filter by merge requests that are currently merged.' do
         #{issuables_state_counter_text(type, :merged)}
 
-    %li{ class: ("active" if params[:state] == 'closed') }>
+    %li{ class: active_when(params[:state] == 'closed') }>
       = link_to page_filter_path(state: 'closed', label: true), id: 'state-closed', title: 'Filter by merge requests that are currently closed and unmerged.' do
         #{issuables_state_counter_text(type, :closed)}
   - else
-    %li{ class: ("active" if params[:state] == 'closed') }>
+    %li{ class: active_when(params[:state] == 'closed') }>
       = link_to page_filter_path(state: 'closed', label: true), id: 'state-all', title: 'Filter by issues that are currently closed.' do
         #{issuables_state_counter_text(type, :closed)}
 
-  %li{ class: ("active" if params[:state] == 'all') }>
+  %li{ class: active_when(params[:state] == 'all') }>
     = link_to page_filter_path(state: 'all', label: true), id: 'state-all', title: "Show all #{page_context_word}." do
       #{issuables_state_counter_text(type, :all)}

app/views/snippets/_snippets_scope_menu.html.haml

@@ -2,7 +2,7 @@
 - include_private = local_assigns.fetch(:include_private, false)
 
 .nav-links.snippet-scope-menu
-  %li{ class: ("active" unless params[:scope]) }
+  %li{ class: active_when(params[:scope].nil?) }
     = link_to subject_snippets_path(subject) do
       All
       %span.badge
@@ -12,19 +12,19 @@
           = subject.snippets.public_and_internal.count
 
   - if include_private
-    %li{ class: ("active" if params[:scope] == "are_private") }
+    %li{ class: active_when(params[:scope] == "are_private") }
       = link_to subject_snippets_path(subject, scope: 'are_private') do
         Private
         %span.badge
           = subject.snippets.are_private.count
 
-  %li{ class: ("active" if params[:scope] == "are_internal") }
+  %li{ class: active_when(params[:scope] == "are_internal") }
     = link_to subject_snippets_path(subject, scope: 'are_internal') do
       Internal
       %span.badge
         = subject.snippets.are_internal.count
 
-  %li{ class: ("active" if params[:scope] == "are_public") }
+  %li{ class: active_when(params[:scope] == "are_public") }
     = link_to subject_snippets_path(subject, scope: 'are_public') do
       Public
       %span.badge

spec/helpers/application_helper_spec.rb

@@ -265,4 +265,9 @@ describe ApplicationHelper do
       expect(helper.render_markup('foo.adoc', content)).to eq('NOEL')
     end
   end
+
+  describe '#active_when' do
+    it { expect(helper.active_when(true)).to eq('active') }
+    it { expect(helper.active_when(false)).to eq(nil) }
+  end
 end