Factorize some code in Dossier#serialize_value_for_export

app/models/dossier.rb

@@ -210,7 +210,7 @@ class Dossier < ActiveRecord::Base
   def convert_specific_hash_values_to_string(hash_to_convert)
     hash = {}
     hash_to_convert.each do |key, value|
-      value = value.to_s if !value.kind_of?(Time) && !value.nil?
+      value = serialize_value_for_export(value)
       hash.store(key, value)
     end
     return hash
@@ -218,7 +218,7 @@ class Dossier < ActiveRecord::Base
 
   def full_data_strings_array
     data_with_champs.map do |value|
-      value.nil? || value.kind_of?(Time) ? value : value.to_s
+      serialize_value_for_export(value)
     end
   end
 
@@ -303,4 +303,8 @@ class Dossier < ActiveRecord::Base
     end
   end
 
+  def serialize_value_for_export(value)
+    value.nil? || value.kind_of?(Time) ? value : value.to_s
+  end
+
 end