diff options
| -rw-r--r-- | activerecord/lib/active_record/attribute_methods/dirty.rb | 41 | ||||
| -rw-r--r-- | activerecord/test/cases/dirty_test.rb | 10 |
2 files changed, 39 insertions, 12 deletions
diff --git a/activerecord/lib/active_record/attribute_methods/dirty.rb b/activerecord/lib/active_record/attribute_methods/dirty.rb index b88c84938d..9ec1fbeee1 100644 --- a/activerecord/lib/active_record/attribute_methods/dirty.rb +++ b/activerecord/lib/active_record/attribute_methods/dirty.rb @@ -3,17 +3,17 @@ module ActiveRecord # Track unsaved attribute changes. # # A newly instantiated object is unchanged: - # person = Person.find_by_name('uncle bob') + # person = Person.find_by_name('Uncle Bob') # person.changed? # => false # # Change the name: # person.name = 'Bob' # person.changed? # => true # person.name_changed? # => true - # person.name_was # => 'uncle bob' - # person.name_change # => ['uncle bob', 'Bob'] + # person.name_was # => 'Uncle Bob' + # person.name_change # => ['Uncle Bob', 'Bob'] # person.name = 'Bill' - # person.name_change # => ['uncle bob', 'Bill'] + # person.name_change # => ['Uncle Bob', 'Bill'] # # Save the changes: # person.save @@ -26,21 +26,33 @@ module ActiveRecord # person.name_change # => nil # # Which attributes have changed? - # person.name = 'bob' + # person.name = 'Bob' # person.changed # => ['name'] - # person.changes # => { 'name' => ['Bill', 'bob'] } + # person.changes # => { 'name' => ['Bill', 'Bob'] } + # + # Resetting an attribute returns it to its original state: + # person.reset_name! # => 'Bill' + # person.changed? # => false + # person.name_changed? # => false + # person.name # => 'Bill' # # Before modifying an attribute in-place: # person.name_will_change! - # person.name << 'by' - # person.name_change # => ['uncle bob', 'uncle bobby'] + # person.name << 'y' + # person.name_change # => ['Bill', 'Billy'] module Dirty extend ActiveSupport::Concern - DIRTY_SUFFIXES = ['_changed?', '_change', '_will_change!', '_was'] + DIRTY_AFFIXES = [ + { :suffix => '_changed?' }, + { :suffix => '_change' }, + { :suffix => '_will_change!' }, + { :suffix => '_was' }, + { :prefix => 'reset_', :suffix => '!' } + ] included do - attribute_method_suffix *DIRTY_SUFFIXES + attribute_method_affix *DIRTY_AFFIXES alias_method_chain :save, :dirty alias_method_chain :save!, :dirty @@ -118,6 +130,11 @@ module ActiveRecord attribute_changed?(attr) ? changed_attributes[attr] : __send__(attr) end + # Handle <tt>reset_*!</tt> for +method_missing+. + def reset_attribute!(attr) + self[attr] = changed_attributes[attr] if attribute_changed?(attr) + end + # Handle <tt>*_will_change!</tt> for +method_missing+. def attribute_will_change!(attr) changed_attributes[attr] = clone_attribute_value(:read_attribute, attr) @@ -175,9 +192,9 @@ module ActiveRecord def alias_attribute_with_dirty(new_name, old_name) alias_attribute_without_dirty(new_name, old_name) - DIRTY_SUFFIXES.each do |suffix| + DIRTY_AFFIXES.each do |affixes| module_eval <<-STR, __FILE__, __LINE__+1 - def #{new_name}#{suffix}; self.#{old_name}#{suffix}; end # def subject_changed?; self.title_changed?; end + def #{affixes[:prefix]}#{new_name}#{affixes[:suffix]}; self.#{affixes[:prefix]}#{old_name}#{affixes[:suffix]}; end # def reset_subject!; self.reset_title!; end STR end end diff --git a/activerecord/test/cases/dirty_test.rb b/activerecord/test/cases/dirty_test.rb index ac95bac4ad..1441421a80 100644 --- a/activerecord/test/cases/dirty_test.rb +++ b/activerecord/test/cases/dirty_test.rb @@ -62,6 +62,16 @@ class DirtyTest < ActiveRecord::TestCase assert_equal parrot.name_change, parrot.title_change end + def test_reset_attribute! + pirate = Pirate.create!(:catchphrase => 'Yar!') + pirate.catchphrase = 'Ahoy!' + + pirate.reset_catchphrase! + assert_equal "Yar!", pirate.catchphrase + assert_equal Hash.new, pirate.changes + assert !pirate.catchphrase_changed? + end + def test_nullable_number_not_marked_as_changed_if_new_value_is_blank pirate = Pirate.new |