dirty.rb in activemodel-6.0.0.beta1

- old
+ new

@@ -151,11 +151,11 @@
       @attributes_changed_by_setter = ActiveSupport::HashWithIndifferentAccess.new
       forget_attribute_assignments
       @mutations_from_database = nil
     end
 
-    # Returns +true+ if any of the attributes have unsaved changes, +false+ otherwise.
+    # Returns +true+ if any of the attributes has unsaved changes, +false+ otherwise.
     #
     #   person.changed? # => false
     #   person.name = 'bob'
     #   person.changed? # => true
     def changed?
@@ -304,10 +304,10 @@
         [changed_attributes[attr], _read_attribute(attr)] if attribute_changed?(attr)
       end
 
       # Handles <tt>*_previous_change</tt> for +method_missing+.
       def attribute_previous_change(attr)
-        previous_changes[attr] if attribute_previously_changed?(attr)
+        previous_changes[attr]
       end
 
       # Handles <tt>*_will_change!</tt> for +method_missing+.
       def attribute_will_change!(attr)
         unless attribute_changed?(attr)