fix error

app/models/site_feed_annc.rb

@@ -29,7 +29,7 @@ class SiteFeedAnnc
   def cache_annc(force_refresh=false,locales=nil,trans=nil)
     feed = SiteFeed.find(self.feed_id)
     anns = feed.get_annc(force_refresh)
-    cat = self.category_title
+    cat = self[:category_title]
     if locales.nil?
       locales = Site.first.in_use_locales rescue I18n.available_locales
     end
@@ -162,6 +162,7 @@ class SiteFeedAnnc
   end
 
   def self.get_feed_cache(channel_key,merge_with_category=nil,site_source=nil,locale=I18n.locale.to_s,is_widget=false,max_len=nil)
+    locale = I18n.locale.to_s
     max_len = ((max_len.to_i < 0 rescue true) ? 0 : max_len.to_i)
     if max_len > 0
       match_cond = {"channel_key"=>channel_key}
@@ -187,6 +188,7 @@ class SiteFeedAnnc
       end
       self.collection.aggregate(pipeline).collect do |data|
         tmp = data['data']
+        tmp['category'] = tmp['category'][locale]
         if tmp["link_to_show"].nil?
           if !is_widget
             tmp["link_to_show"] = UseSourceUrl && tmp["show_url"] ? (tmp["source_url"] + tmp["show_url"]) : OrbitHelper.url_to_show(tmp["params"]) rescue ''
@@ -209,6 +211,7 @@ class SiteFeedAnnc
     Array(self[:all_contents_for_feed][locale.to_s]).collect do |v|
       tmp = v
       next if tmp["is_hidden"]  || (!tmp["postdate"].nil? && tmp["postdate"]<Time.now) || tmp['title'].blank?
+      tmp['category'] = tmp['category'][locale]
       if tmp["link_to_show"].nil?
         if !is_widget
           tmp["link_to_show"] = UseSourceUrl && tmp["show_url"] ? (tmp["source_url"] + tmp["show_url"]) : OrbitHelper.url_to_show(tmp["params"]) rescue ''
@@ -226,6 +229,6 @@ class SiteFeedAnnc
     Category.find(self.merge_with_category) rescue nil
   end
   def category_title
-    self[:category_title][I18n.locale]
+    self[:category_title][I18n.locale.to_s]
   end
 end