Add a non-mutating #apply_to_text

Still need to `return nil if text_to_censor.nil?` because `gsub!`
returns `nil` rather than the original text if it does not make a
substitution.

1 files changed, 5 insertions, 0 deletions

diff --git a/app/models/censor_rule.rb b/app/models/censor_rule.rb
index 3b5c2d805..58170f237 100644
--- a/app/models/censor_rule.rb
+++ b/app/models/censor_rule.rb
@@ -42,6 +42,11 @@ class CensorRule < ActiveRecord::Base
                                       :user_id => nil,
                                       :public_body_id => nil } }
 
+    def apply_to_text(text_to_censor)
+        return nil if text_to_censor.nil?
+        text_to_censor.gsub(to_replace, replacement)
+    end
+
     def apply_to_text!(text_to_censor)
         return nil if text_to_censor.nil?
         text_to_censor.gsub!(to_replace, replacement)