Adding nil checks.

lib/clortho.rb

@@ -9,9 +9,16 @@ module Clortho
       module ClassMethods
 
         def searchable(*args)
+          options = args.extract_options!
+
           args.each do |arg|
-            key :"#{arg}_keywords", String
-            key :"#{arg}_keywords_array", Array
+            key :"#{arg}_keywords", String, default: ""
+            key :"#{arg}_keywords_array", Array, default: []
+
+            class_eval <<-CODE
+              class << self
+              end
+            CODE
           end
         end
 

test/test_clortho.rb

@@ -13,7 +13,7 @@ def setup
     save_posts
   end
 
-  should 'have a all searchable fields fields' do
+  should 'have a all searchable fields, both as a string and array' do
     @posts.each do |post|
       ['summary', 'body', 'title'].each do |word|
         assert post.respond_to? :"#{word}_keywords"
@@ -22,6 +22,15 @@ def setup
     end
   end
 
+  should 'have fields that never evaluate to nil unless supplied field is nil' do
+    @posts.each do |post|
+      ['summary', 'body', 'title'].each do |word|
+        assert !(post.send :"#{word}_keywords").nil?
+        assert !(post.send :"#{word}_keywords_array").nil?
+      end
+    end
+  end
+
   private
   def save_posts
     @posts.each{ |post| post.save }