FEATURE: allow moderators to globally pin topics

app/assets/javascripts/discourse/controllers/topic_controller.js

@@ -167,6 +167,11 @@ Discourse.TopicController = Discourse.ObjectController.extend(Discourse.Selected
       this.get('content').setStatus('pinned', this.get('pinned_at') ? false : true);
     },
 
+    togglePinnedGlobally: function() {
+      // Note that this is different than clearPin
+      this.get('content').setStatus('pinned_globally', this.get('pinned_at') ? false : true);
+    },
+
     toggleArchived: function() {
       this.get('content').toggleStatus('archived');
     },

app/assets/javascripts/discourse/templates/topic_admin_menu.js.handlebars

@@ -33,6 +33,7 @@
           <button {{action togglePinned}} class='btn btn-admin'><i class='fa fa-thumb-tack'></i> {{i18n topic.actions.unpin}}</button>
         {{else}}
           <button {{action togglePinned}} class='btn btn-admin'><i class='fa fa-thumb-tack'></i> {{i18n topic.actions.pin}}</button>
+          <button {{action togglePinnedGlobally}} class='btn btn-admin'><i class='fa fa-thumb-tack'></i> {{i18n topic.actions.pin_globally}}</button>
         {{/if}}
       </li>
 

app/controllers/topics_controller.rb

@@ -365,7 +365,7 @@ class TopicsController < ApplicationController
   end
 
   def check_for_status_presence(key, attr)
-    invalid_param(key) unless %w(visible closed pinned archived).include?(attr)
+    invalid_param(key) unless %w(pinned_globally visible closed pinned archived).include?(attr)
   end
 
   def invalid_param(key)

app/models/topic.rb

@@ -618,8 +618,9 @@ class Topic < ActiveRecord::Base
     TopicUser.change(user.id, id, cleared_pinned_at: Time.now)
   end
 
-  def update_pinned(status)
+  def update_pinned(status, global=false)
     update_column(:pinned_at, status ? Time.now : nil)
+    update_column(:pinned_globally, global)
   end
 
   def draft_key

app/models/topic_status_update.rb

@@ -14,8 +14,8 @@ TopicStatusUpdate = Struct.new(:topic, :user) do
   private
 
   def change(status)
-    if status.pinned?
-      topic.update_pinned status.enabled?
+    if status.pinned? || status.pinned_globally?
+      topic.update_pinned status.enabled?, status.pinned_globally?
     elsif status.autoclosed?
       topic.update_column 'closed', status.enabled?
     else
@@ -67,7 +67,7 @@ TopicStatusUpdate = Struct.new(:topic, :user) do
   end
 
   Status = Struct.new(:name, :enabled) do
-    %w(pinned autoclosed closed).each do |status|
+    %w(pinned_globally pinned autoclosed closed).each do |status|
       define_method("#{status}?") { name == status }
     end
 

config/locales/client.en.yml

@@ -796,6 +796,7 @@ en:
         auto_close: "Auto Close"
         unpin: "Un-Pin Topic"
         pin: "Pin Topic"
+        pin_globally: "Pin Topic Globally"
         unarchive: "Unarchive Topic"
         archive: "Archive Topic"
         invisible: "Make Invisible"

config/locales/server.en.yml

@@ -930,6 +930,9 @@ en:
     autoclosed_disabled: "This topic is now opened. New replies are allowed."
     pinned_enabled: "This topic is now pinned. It will appear at the top of its category until it is either unpinned by a moderator, or the Clear Pin button is pressed."
     pinned_disabled: "This topic is now unpinned. It will no longer appear at the top of its category."
+
+    pinned_globally_enabled: "This topic is now pinned globally. It will appear at the top of its category and all topic lists until it is either unpinned by a moderator, or the Clear Pin button is pressed."
+    pinned_globally_disabled: "This topic is now unpinned. It will no longer appear at the top of its category."
     visible_enabled: "This topic is now visible. It will be displayed in topic lists."
     visible_disabled: "This topic is now invisible. It will no longer be displayed in any topic lists. The only way to access this topic is via direct link."
 

db/migrate/20140407055830_add_pinned_globally_to_topics.rb

@@ -0,0 +1,12 @@
+class AddPinnedGloballyToTopics < ActiveRecord::Migration
+  def up
+    add_column :topics, :pinned_globally, :boolean, null: false, default: false
+    execute "UPDATE topics set pinned_globally = 't' where category_id = (
+      SELECT value::int FROM site_settings WHERE name = 'uncategorized_category_id') AND pinned_at IS NOT NULL
+    "
+  end
+
+  def down
+    remove_column :topics, :pinned_globally
+  end
+end

lib/topic_query_sql.rb

@@ -31,7 +31,7 @@ module TopicQuerySQL
     # If you've clearned the pin, use bumped_at, otherwise put it at the top
     def order_nocategory_with_pinned_sql
       "CASE
-        WHEN topics.category_id = #{SiteSetting.uncategorized_category_id.to_i} and (COALESCE(topics.pinned_at, '#{lowest_date}') > COALESCE(tu.cleared_pinned_at, '#{lowest_date}'))
+        WHEN topics.pinned_globally and (COALESCE(topics.pinned_at, '#{lowest_date}') > COALESCE(tu.cleared_pinned_at, '#{lowest_date}'))
           THEN '#{highest_date}'
         ELSE topics.bumped_at
        END DESC"
@@ -42,7 +42,7 @@ module TopicQuerySQL
     end
 
     def order_nocategory_basic_bumped
-      "CASE WHEN topics.category_id = #{SiteSetting.uncategorized_category_id.to_i} and (topics.pinned_at IS NOT NULL) THEN 0 ELSE 1 END, topics.bumped_at DESC"
+      "CASE WHEN topics.pinned_globally and (topics.pinned_at IS NOT NULL) THEN 0 ELSE 1 END, topics.bumped_at DESC"
     end
 
     def order_top_for(score)

spec/components/topic_query_spec.rb

@@ -101,6 +101,7 @@ describe TopicQuery do
                         posts_count: 5,
                         participant_count: 12,
                         pinned_at: 10.minutes.ago,
+                        pinned_globally: true,
                         bumped_at: 10.minutes.ago)
     end
     let!(:archived_topic) do