Rename rollback_changes to undo_changes

To avoid overload with database rollback

activemodel/CHANGELOG.md

@@ -1,4 +1,4 @@
-*   Added `rollback_changes` method to `ActiveModel::Dirty` API to roolback all the
+*   Added `undo_changes` method to `ActiveModel::Dirty` API to restore all the
     changed values to the previous data.
 
     *Igor G.*

activemodel/lib/active_model/dirty.rb

@@ -17,7 +17,7 @@ module ActiveModel
   # * Call <tt>changes_applied</tt> after the changes are persisted.
   # * Call <tt>reset_changes</tt> when you want to reset the changes
   #   information.
-  # * Call <tt>rollback_changes</tt> when you want to restore previous data
+  # * Call <tt>undo_changes</tt> when you want to restore previous data.
   #
   # A minimal implementation could be:
   #
@@ -45,7 +45,7 @@ module ActiveModel
   #     end
   #
   #     def rollback!
-  #       rollback_changes
+  #       undo_changes
   #     end
   #   end
   #
@@ -191,7 +191,7 @@ module ActiveModel
       end
 
       # Restore all previous data.
-      def rollback_changes # :doc:
+      def undo_changes # :doc:
         changed_attributes.each_key { |attr| reset_attribute! attr }
       end
 

activemodel/test/cases/dirty_test.rb

@@ -47,7 +47,7 @@ class DirtyTest < ActiveModel::TestCase
     end
 
     def rollback
-      rollback_changes
+      undo_changes
     end
   end
 
@@ -181,7 +181,7 @@ class DirtyTest < ActiveModel::TestCase
     assert_equal ActiveSupport::HashWithIndifferentAccess.new, @model.changed_attributes
   end
 
-  test "rollback should restore all previous data" do
+  test "undo_changes should restore all previous data" do
     @model.name = 'Dmitry'
     @model.color = 'Red'
     @model.save