Fix topics list fragment caching with I18n ruby-china#788

Author: huacnlee

app/views/home/index.html.erb

@@ -3,16 +3,18 @@
 <div class="home_suggest_topics panel panel-default">
   <div class="panel-heading">社区精华帖</div>
   <div class="panel-body topics row">
+    <% cache(["home_suggest_topics", @excellent_topics]) do %>
     <%
       odd_topics, even_topics = @excellent_topics.partition.each_with_index { |t, i| i.odd?  }
     %>
     <div class="col-md-6 topics-group">
-      <%= render partial: "topics/topic", collection: odd_topics, locals: { suggest: false }, cached: -> (topic) { [topic, 'normal'] } %>
+      <%= render partial: "topics/topic", collection: odd_topics, locals: { suggest: false } %>
     </div>
 
     <div class="col-md-6 topics-group">
-      <%= render partial: "topics/topic", collection: even_topics, locals: { suggest: false }, cached: -> (topic) { [topic, 'normal'] } %>
+      <%= render partial: "topics/topic", collection: even_topics, locals: { suggest: false } %>
     </div>
+    <% end %>
   </div>
   <div class="panel-footer">
     <%= link_to "查看更多精华帖...", excellent_topics_path %>

app/views/topics/_topic.html.erb

@@ -1,3 +1,4 @@
+<% cache([topic, suggest]) do %>
 <div class="topic media topic-<%= topic.id %>">
   <div class="avatar media-left">
     <%= user_avatar_tag(topic.user, :md) %>
@@ -32,4 +33,5 @@
       <%= link_to(topic.replies_count,"#{topic_path(topic)}#reply#{topic.replies_count}", class: "state-false") %>
     <% end %>
   </div>
-</div>
+</div>
+<% end %>

app/views/topics/index.html.erb

@@ -11,10 +11,14 @@
 
       <div class="panel-body item-list">
         <% if @suggest_topics.present? %>
-          <%= render partial: '/topics/topic', collection: @suggest_topics, locals: { suggest: true }, cached: -> (topic) { [topic, 'suggest'] } %>
+          <%= cache(['topics', 'suggest', @topics]) do %>
+            <%= render partial: '/topics/topic', collection: @suggest_topics, locals: { suggest: true } %>
+          <% end %>
         <% end %>
 
-        <%= render partial: '/topics/topic', collection: @topics, locals: { suggest: false }, cached: -> (topic) { [topic, 'normal'] } %>
+        <%= cache(['topics', 'normal', @topics]) do %>
+          <%= render partial: '/topics/topic', collection: @topics, locals: { suggest: false } %>
+        <% end %>
       </div>
 
       <div class="panel-footer clearfix">