Dirty typecasts attribute values before comparison, if possible. Closes #11464 [Russell Norris, mroch]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@9139 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

1 files changed, 6 insertions, 1 deletions

diff --git a/activerecord/lib/active_record/dirty.rb b/activerecord/lib/active_record/dirty.rb
index a9ae2b148c..4b65545851 100644
--- a/activerecord/lib/active_record/dirty.rb
+++ b/activerecord/lib/active_record/dirty.rb
@@ -91,7 +91,12 @@ module ActiveRecord
           old = read_attribute(attr)
 
           # Remember the original value if it's different.
-          changed_attributes[attr] = old unless old == value
+          typecasted = if column = column_for_attribute(attr)
+                         column.type_cast(value)
+                       else
+                         value
+                       end
+          changed_attributes[attr] = old unless old == typecasted
         end
 
         # Carry on.