fix error

app/views/announcements/index.html.erb

@@ -1,3 +1,8 @@
+<% tmp = render_view %>
+<% @params = @index_controller.instance_variable_get(:@params) rescue {}
+   @enable_search_flag = @index_controller.instance_variable_get(:@enable_search_flag) rescue false
+%>
+
 <% if @enable_search_flag %>
   <style type="text/css">
     #category_select_box{
@@ -40,7 +45,7 @@
     }
   </style>
   <form>
-      <% cats = Array(page.categories)
+      <% cats = Array(@page.categories)
       if cats.include? 'all'
         cats = ModuleApp.where(key: 'announcement').first.categories
       else
@@ -65,4 +70,4 @@
     </div>
   </form>
 <% end %>
-<%= render_view %>
+<%= tmp %>