complete preview for both new and announcement

lib/orbit_core_lib.rb

@@ -1,14 +1,14 @@
 module  OrbitCoreLib
   module Preview
     def self.included(base)
-      base.instance_eval("field :is_preview,type: Boolean,:default => false")
-      base.instance_eval("scope :not_preview,where(:is_preview=>false)")
-      base.define_singleton_method :new_preview do |*args|
-        temp_obj = self.new(args.first)
-        temp_obj.is_preview = true
-        temp_obj.save(:validate => false) rescue
-        temp_obj
-      end
+
+      # base.instance_eval("field :is_preview,type: Boolean,:default => false")
+      # base.instance_eval("scope :not_preview,where(:is_preview=>false)")
+      base.class_eval ("
+        def to_preview
+          raise 'Developer,please override to_preview method'  
+        end
+      ")
     end
   end