FEATURE: the notice asking admins to get discussion started will update with live counts of topics and posts

app/assets/javascripts/discourse/components/create-topics-notice.js.es6

@@ -0,0 +1,78 @@
+import computed from 'ember-addons/ember-computed-decorators';
+import { observes } from 'ember-addons/ember-computed-decorators';
+import LivePostCounts from 'discourse/models/live-post-counts';
+
+export default Ember.Component.extend({
+  classNameBindings: ['hidden:hidden',':create-topics-notice'],
+
+  enabled: false,
+
+  publicTopicCount: null,
+  publicPostCount: null,
+
+  requiredTopics: 5,
+  requiredPosts: Ember.computed.alias('siteSettings.tl1_requires_read_posts'),
+
+  init() {
+    this._super();
+    if (this.get('shouldSee')) {
+      let topicCount = 0,
+          postCount = 0;
+
+      // Use data we already have before fetching live stats
+      _.each(this.site.get('categories'), function(c) {
+        if (!c.get('read_restricted')) {
+          topicCount += c.get('topic_count');
+          postCount  += c.get('post_count');
+        }
+      });
+
+      if (topicCount < this.get('requiredTopics') || postCount < this.get('requiredPosts')) {
+        this.set('enabled', true);
+        this.fetchLiveStats();
+      }
+    }
+  },
+
+  @computed()
+  shouldSee() {
+    return Discourse.User.currentProp('admin') && this.siteSettings.show_create_topics_notice;
+  },
+
+  @computed('enabled', 'shouldSee', 'publicTopicCount', 'publicPostCount')
+  hidden() {
+    return !this.get('enabled') || !this.get('shouldSee') || this.get('publicTopicCount') == null || this.get('publicPostCount') == null;
+  },
+
+  @computed('publicTopicCount', 'publicPostCount', 'topicTrackingState.incomingCount')
+  message() {
+    return new Handlebars.SafeString(I18n.t('too_few_topics_notice', {
+      requiredTopics: this.get('requiredTopics'),
+      requiredPosts:  this.get('requiredPosts'),
+      currentTopics:  this.get('publicTopicCount'),
+      currentPosts:   this.get('publicPostCount')
+    }));
+  },
+
+  @computed()
+  topicTrackingState() {
+    return Discourse.TopicTrackingState.current();
+  },
+
+  @observes('topicTrackingState.incomingCount')
+  fetchLiveStats() {
+    if (!this.get('enabled')) { return; }
+
+    var self = this;
+    LivePostCounts.find().then(function(stats) {
+      if(stats) {
+        self.set('publicTopicCount', stats.get('public_topic_count'));
+        self.set('publicPostCount', stats.get('public_post_count'));
+        if (self.get('publicTopicCount') >= self.get('requiredTopics')
+            && self.get('publicPostCount') >= self.get('requiredPosts')) {
+          self.set('enabled', false); // No more checks
+        }
+      }
+    });
+  }
+});

app/assets/javascripts/discourse/components/global-notice.js.es6

@@ -14,20 +14,6 @@ export default Ember.Component.extend(StringBuffer, {
       notices.push([I18n.t("emails_are_disabled"), 'alert-emails-disabled']);
     }
 
-    if (Discourse.User.currentProp('admin') && this.siteSettings.show_create_topics_notice) {
-      let topic_count = 0,
-          post_count = 0;
-      _.each(this.site.get('categories'), function(c) {
-        if (!c.get('read_restricted')) {
-          topic_count += c.get('topic_count');
-          post_count  += c.get('post_count');
-        }
-      });
-      if (topic_count < 5 || post_count < this.siteSettings.tl1_requires_read_posts) {
-        notices.push([I18n.t("too_few_topics_notice", { posts: this.siteSettings.tl1_requires_read_posts }), 'alert-too-few-topics']);
-      }
-    }
-
     if (!_.isEmpty(this.siteSettings.global_notice)) {
       notices.push([this.siteSettings.global_notice, 'alert-global-notice']);
     }

app/assets/javascripts/discourse/models/live-post-counts.es6

@@ -0,0 +1,9 @@
+const LivePostCounts = Discourse.Model.extend({});
+
+LivePostCounts.reopenClass({
+  find() {
+    return Discourse.ajax("/about/live_post_counts.json").then(result => LivePostCounts.create(result));
+  }
+});
+
+export default LivePostCounts;

app/assets/javascripts/discourse/templates/application.hbs

@@ -6,6 +6,7 @@
       {{custom-html "top"}}
     {{/if}}
     {{global-notice}}
+    {{create-topics-notice}}
   </div>
   {{outlet}}
   {{render "user-card"}}

app/assets/javascripts/discourse/templates/components/create-topics-notice.hbs

@@ -0,0 +1,7 @@
+{{#unless hidden}}
+  <div class='row'>
+    <div class='alert alert-info alert-too-few-topics'>
+      {{message}}
+    </div>
+  </div>
+{{/unless}}

app/controllers/about_controller.rb

@@ -1,3 +1,5 @@
+require_dependency 'rate_limiter'
+
 class AboutController < ApplicationController
   skip_before_filter :check_xhr, only: [:show]
 
@@ -5,4 +7,13 @@ class AboutController < ApplicationController
     @about = About.new
     render_serialized(@about, AboutSerializer)
   end
+
+  def live_post_counts
+    RateLimiter.new(current_user, "live_post_counts", 1, 10.minutes).performed! unless current_user.staff?
+    category_topic_ids = Category.pluck(:topic_id).compact!
+    public_topics = Topic.listable_topics.visible.secured(Guardian.new(nil)).where.not(id: category_topic_ids)
+    stats = { public_topic_count: public_topics.count }
+    stats[:public_post_count] = public_topics.sum(:posts_count) - stats[:public_topic_count]
+    render json: stats
+  end
 end

config/locales/client.en.yml

@@ -686,7 +686,7 @@ en:
     read_only_mode:
       enabled: "Read-only mode is enabled. You can continue to browse the site but interactions may not work."
       login_disabled: "Login is disabled while the site is in read only mode."
-    too_few_topics_notice: "Create at least 5 public topics and %{posts} public replies to get discussion started. New users cannot earn trust levels unless there's content for them to read. This message appears only to staff."
+    too_few_topics_notice: "Get discussion started by creating %{requiredTopics} public topics and %{requiredPosts} posts. There are currently <strong>%{currentTopics} / %{requiredTopics}</strong> topics and <strong>%{currentPosts} / %{requiredPosts}</strong> posts. New users cannot earn trust levels unless there's content for them to read. This message appears only to staff."
 
     learn_more: "learn more..."
 

config/routes.rb

@@ -23,7 +23,11 @@ Discourse::Application.routes.draw do
     mount Logster::Web => "/logs", constraints: AdminConstraint.new
   end
 
-  resources :about
+  resources :about do
+    collection do
+      get "live_post_counts"
+    end
+  end
 
   resources :directory_items