Make topic lists show last activity more intuitively

app/assets/javascripts/discourse/models/topic.js

@@ -127,11 +127,6 @@ Discourse.Topic = Discourse.Model.extend({
     return this.get('archetype') === 'private_message';
   }).property('archetype'),
 
-  // Does this topic only have a single post?
-  singlePost: (function() {
-    return this.get('posts_count') === 1;
-  }).property('posts_count'),
-
   toggleStatus: function(property) {
     this.toggleProperty(property);
     return $.post("" + (this.get('url')) + "/status", {

app/assets/javascripts/discourse/templates/list/topic_list_item.js.handlebars

@@ -38,16 +38,16 @@
 
   <td class='num'>{{number views numberKey="views_long"}}</td>
 
-  {{#if singlePost}}
-    <td class='num activity'>
-      <a href="{{url}}" class='age' title='{{i18n first_post}}: {{{unboundDate created_at}}}'>{{{age}}}</a>
-    </td>
-    <td></td>
-  {{else}}
+  {{#if bumped}}
     <td class='num activity'>
       <a href="{{url}}" {{{bindAttr class=":age ageCold"}}} title='{{i18n first_post}}: {{{unboundDate created_at}}}' >{{{age}}}</a>
     </td>
     <td class='num activity last'>
-      <a href="{{lastPostUrl}}" class='age' title='{{i18n last_post}}: {{{unboundDate last_posted_at}}}'>{{{last_post_age}}}</a>
+      <a href="{{lastPostUrl}}" class='age' title='{{i18n last_post}}: {{{unboundDate bumped_at}}}'>{{{bumped_age}}}</a>
     </td>
+  {{else}}
+    <td class='num activity'>
+      <a href="{{url}}" class='age' title='{{i18n first_post}}: {{{unboundDate created_at}}}'>{{{age}}}</a>
+    </td>
+    <td></td>
   {{/if}}

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

@@ -25,18 +25,18 @@
 
   <td class='num'>{{number views numberKey="views_long"}}</td>
 
-  {{#if singlePost}}
-    <td class='num activity'>
-      <a href="{{url}}" class='age' title='{{i18n first_post}}: {{{unboundDate created_at}}}'>{{{age}}}</a>
-    </td>
-    <td></td>
-  {{else}}
+  {{#if bumped}}
     <td class='num activity'>
       <a href="{{url}}" {{{bindAttr class=":age ageCold"}}} title='{{i18n first_post}}: {{{unboundDate created_at}}}' >{{{age}}}</a>
     </td>
     <td class='num activity last'>
-      <a href="{{lastPostUrl}}" class='age' title='{{i18n last_post}}: {{{unboundDate last_posted_at}}}'>{{{last_post_age}}}</a>
+      <a href="{{lastPostUrl}}" class='age' title='{{i18n last_post}}: {{{unboundDate bumped_at}}}'>{{{bumped_age}}}</a>
     </td>
+  {{else}}
+    <td class='num activity'>
+      <a href="{{url}}" class='age' title='{{i18n first_post}}: {{{unboundDate created_at}}}'>{{{age}}}</a>
+    </td>
+    <td></td>
   {{/if}}
 
   {{/group}}

app/serializers/listable_topic_serializer.rb

@@ -8,6 +8,9 @@ class ListableTopicSerializer < BasicTopicSerializer
              :image_url,
              :created_at,
              :last_posted_at,
+             :bumped,
+             :bumped_at,
+             :bumped_age,
              :age,
              :unseen,
              :last_read_post_number,
@@ -18,6 +21,16 @@ class ListableTopicSerializer < BasicTopicSerializer
   def age
     AgeWords.age_words(Time.now - (object.created_at || Time.now))
   end
+  
+  def bumped
+    object.created_at < object.bumped_at
+  end
+  
+  def bumped_age
+    return nil if object.bumped_at.blank?
+    AgeWords.age_words(Time.now - object.bumped_at)
+  end
+  alias include_bumped_age? :bumped
 
   def seen
     object.user_data.present?

app/serializers/suggested_topic_serializer.rb

@@ -1,11 +1,6 @@
 class SuggestedTopicSerializer < ListableTopicSerializer
 
-  attributes :archetype, :like_count, :views, :last_post_age
+  attributes :archetype, :like_count, :views
   has_one :category, embed: :objects
 
-  def last_post_age
-    return nil if object.last_posted_at.blank?
-    AgeWords.age_words(Time.now - object.last_posted_at)
-  end
-
 end

app/serializers/topic_list_item_serializer.rb

@@ -8,7 +8,6 @@ class TopicListItemSerializer < ListableTopicSerializer
              :pinned,
              :closed,
              :archived,
-             :last_post_age,
              :starred,
              :has_best_of,
              :archetype
@@ -16,11 +15,6 @@ class TopicListItemSerializer < ListableTopicSerializer
   has_one :category
   has_many :posters, serializer: TopicPosterSerializer, embed: :objects
 
-  def last_post_age
-    return nil if object.last_posted_at.blank?
-    AgeWords.age_words(Time.now - object.last_posted_at)
-  end
-
   def starred
     object.user_data.starred?
   end