Create a cold age helper, make sure the first age column is strictly

`created_at`, add cold to the second column.

app/assets/javascripts/discourse/helpers/application_helpers.js

@@ -16,6 +16,33 @@ Handlebars.registerHelper('breakUp', function(property, hint, options) {
   return new Handlebars.SafeString(Discourse.Formatter.breakUp(prop, hint));
 });
 
+// helper function for dates
+function daysSinceEpoch(dt) {
+  // 1000 * 60 * 60 * 24 = days since epoch
+  return dt.getTime() / 86400000;
+}
+
+/**
+  Converts a date to a coldmap class
+
+  @method coldDate
+**/
+Handlebars.registerHelper('coldAgeClass', function(property, options) {
+  var dt = Em.Handlebars.get(this, property, options);
+
+  if (!dt) { return 'age'; }
+
+  // Show heat on age
+  var nowDays = daysSinceEpoch(new Date()),
+      epochDays = daysSinceEpoch(new Date(dt));
+  if (nowDays - epochDays > 60) return 'age coldmap-high';
+  if (nowDays - epochDays > 30) return 'age coldmap-med';
+  if (nowDays - epochDays > 14) return 'age coldmap-low';
+
+  return 'age';
+});
+
+
 /**
   Truncates long strings
 

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

@@ -118,25 +118,6 @@ Discourse.Topic = Discourse.Model.extend({
     return this.get('new_posts');
   }.property('new_posts', 'id'),
 
-  // The coldmap class for the age of the topic
-  ageCold: function() {
-    var createdAt, daysSinceEpoch, lastPost, lastPostDays, nowDays;
-    if (!(createdAt = this.get('created_at'))) return;
-    if (!(lastPost = this.get('last_posted_at'))) lastPost = createdAt;
-    daysSinceEpoch = function(dt) {
-      // 1000 * 60 * 60 * 24 = days since epoch
-      return dt.getTime() / 86400000;
-    };
-
-    // Show heat on age
-    nowDays = daysSinceEpoch(new Date());
-    lastPostDays = daysSinceEpoch(new Date(lastPost));
-    if (nowDays - lastPostDays > 60) return 'coldmap-high';
-    if (nowDays - lastPostDays > 30) return 'coldmap-med';
-    if (nowDays - lastPostDays > 14) return 'coldmap-low';
-    return null;
-  }.property('age', 'created_at', 'last_posted_at'),
-
   viewsHeat: function() {
     var v = this.get('views');
     if( v >= Discourse.SiteSettings.topic_views_heat_high )   return 'heatmap-high';

app/assets/javascripts/discourse/templates/components/basic-topic-list.js.handlebars

@@ -57,10 +57,10 @@
           <td {{bind-attr class=":num :views topic.viewsHeat"}}>{{number topic.views numberKey="views_long"}}</td>
           {{#if topic.bumped}}
             <td class='num activity'>
-              <a href="{{unbound topic.url}}" {{{bind-attr class=":age topic.ageCold"}}} title='{{i18n first_post}}: {{{rawDate topic.created_at}}}' >{{unboundAge topic.created_at}}</a>
+              <a href="{{unbound topic.url}}" class='{{coldAgeClass created_at}}' title='{{i18n first_post}}: {{{rawDate topic.created_at}}}' >{{unboundAge topic.created_at}}</a>
             </td>
             <td class='num activity last'>
-              <a href="{{unbound topic.lastPostUrl}}" class='age' title='{{i18n last_post}}: {{{rawDate topic.bumped_at}}}'>{{unboundAge topic.bumped_at}}</a>
+              <a href="{{unbound topic.lastPostUrl}}" class='{{coldAgeClass bumped_at}}' title='{{i18n last_post}}: {{{rawDate topic.bumped_at}}}'>{{unboundAge topic.bumped_at}}</a>
             </td>
           {{else}}
             <td class='num activity'>

app/assets/javascripts/discourse/templates/components/topic-map.js.handlebars

@@ -7,7 +7,7 @@
 <section {{bind-attr class=":map mapCollapsed"}}>
   <ul class="clearfix">
     <li>
-      <a href='{{unbound topic.url}}' {{bind-attr class=topic.ageCold}}>
+      <a href='{{unbound topic.url}}' class='{{coldAgeClass topic.created_at}}'>
       <h4>{{i18n created}}</h4>
       {{avatar details.created_by imageSize="tiny"}}
       {{unboundDate topic.created_at}}

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

@@ -52,7 +52,7 @@
         </div>
       </td>
       <td class='num posts'><span class='badge-posts'>{{number posts_count}}</span></td>
-      <td class='num age'><span {{bind-attr class=":age ageCold"}} title='{{rawDate created_at}}'>{{{unboundAge created_at}}}</span></td>
+      <td class='num age'><span class="{{coldAgeClass created_at}}" title='{{rawDate created_at}}'>{{{unboundAge created_at}}}</span></td>
     </tr>
   {{/each}}
 

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

@@ -58,14 +58,14 @@
 
 {{#if bumped}}
   <td class='num activity'>
-    <a href="{{url}}" {{{bind-attr class=":age ageCold"}}} title='{{i18n first_post}}: {{{rawDate created_at}}}' >{{unboundAge created_at}}</a>
+    <a href="{{url}}" class="{{coldAgeClass created_at}}" title='{{i18n first_post}}: {{{rawDate created_at}}}' >{{unboundAge created_at}}</a>
   </td>
   <td class='num activity last'>
-    <a href="{{lastPostUrl}}" class='age' title='{{i18n last_post}}: {{{rawDate bumped_at}}}'>{{unboundAge bumped_at}}</a>
+    <a href="{{lastPostUrl}}" class="{{coldAgeClass bumped_at}}" title='{{i18n last_post}}: {{{rawDate bumped_at}}}'>{{unboundAge bumped_at}}</a>
   </td>
 {{else}}
   <td class='num activity'>
-    <a href="{{url}}" {{{bind-attr class=":age ageCold"}}} title='{{i18n first_post}}: {{{rawDate created_at}}}'>{{unboundAge created_at}}</a>
+    <a href="{{url}}" class="{{coldAgeClass created_at}}" title='{{i18n first_post}}: {{{rawDate created_at}}}'>{{unboundAge created_at}}</a>
   </td>
   <td class='activity'></td>
 {{/if}}