lib/mongoid_search/util.rb in mongoid_search-0.2.3 vs lib/mongoid_search/util.rb in mongoid_search-0.2.4

@@ -1,14 +1,14 @@
 module Util
 
   def self.keywords(text, stem_keywords, ignore_list)
     return [] if text.blank?
-    text = text.
+    text = text.to_s.
       mb_chars.
       normalize(:kd).
       to_s.
       gsub(/[._:;'"`,?|+={}()!@#%^&*<>~\$\-\\\/\[\]]/, ' '). # strip punctuation
-      gsub(/[^[:alpha:]\s]/,'').  # strip accents
+      gsub(/[^[:alnum:]\s]/,'').   # strip accents     
       downcase.
       split(' ').
       reject { |word| word.size < 2 }
     text = text.reject { |word| ignore_list.include?(word) } unless ignore_list.blank?
     text = text.map(&:stem) if stem_keywords