fix get enable_manually_sort nil error

app/helpers/event_news_helper.rb

@@ -1,4 +1,6 @@
 module EventNewsHelper
+  extend self
+
   def data_to_human_type(a,set_tag_ids=nil)
     statuses = a.statuses_with_classname.collect do |status|
       {
@@ -88,7 +90,7 @@ module EventNewsHelper
         sort_maps = {event_date: :asc, is_top: :desc, postdate: :asc, id: :asc}
       else
         sort_maps = {is_top: :desc}
-        if EventNewsHelper.is_postdate_sort_first
+        if is_postdate_sort_first
           sort_maps = sort_maps.merge({postdate: :desc, event_date: :desc, id: :desc})
         else
           sort_maps = sort_maps.merge({event_date: :desc, postdate: :desc, id: :desc})
@@ -234,8 +236,7 @@ module EventNewsHelper
   end
 
   def sort_event_news(event_news_list)
-    enable_manually_sort = enable_manually_sort
-    if @show_today_data_first || !EventNewsHelper.is_postdate_sort_first
+    if @show_today_data_first || !is_postdate_sort_first
       if enable_manually_sort
         event_news_list = event_news_list.sort_by { |event_news|
             tmp1 = event_news["event_date"].blank?
@@ -551,7 +552,7 @@ module EventNewsHelper
       </div>
     </div>").html_safe
   end
-  class << self
+
   def complementaryColor(my_hex)
     if my_hex[0] == '#'
       my_hex = my_hex[1..-1]
@@ -560,6 +561,7 @@ module EventNewsHelper
     comp = rgb.map{|a| (255 - a.to_i(16)).to_s(16).rjust(2,'0')}
     '#'+comp.join
   end
+
   def lighten_color(my_hex,percent)
     if my_hex[0] == '#'
       my_hex = my_hex[1..-1]
@@ -573,6 +575,7 @@ module EventNewsHelper
     end
     '#'+comp.join
   end
+
   def enable_manually_sort
     if defined?(OrbitHelper::SharedHash) && OrbitHelper::SharedHash
       OrbitHelper::SharedHash['event_news_mod'][:enable_manually_sort]
@@ -580,6 +583,7 @@ module EventNewsHelper
       EventNewsSetting.first.enable_manually_sort rescue false
     end
   end
+
   def is_postdate_sort_first
     if defined?(OrbitHelper::SharedHash) && OrbitHelper::SharedHash
       OrbitHelper::SharedHash['event_news_mod'][:is_postdate_sort_first]
@@ -587,5 +591,4 @@ module EventNewsHelper
       EventNewsSetting.first.is_postdate_sort_first rescue false
     end
   end
-  end
 end