diff options
Diffstat (limited to 'activemodel/lib/active_model/dirty.rb')
-rw-r--r-- | activemodel/lib/active_model/dirty.rb | 42 |
1 files changed, 22 insertions, 20 deletions
diff --git a/activemodel/lib/active_model/dirty.rb b/activemodel/lib/active_model/dirty.rb index 6e2e5afd1b..6e0af99ad7 100644 --- a/activemodel/lib/active_model/dirty.rb +++ b/activemodel/lib/active_model/dirty.rb @@ -1,5 +1,5 @@ -require 'active_support/hash_with_indifferent_access' -require 'active_support/core_ext/object/duplicable' +require "active_support/hash_with_indifferent_access" +require "active_support/core_ext/object/duplicable" module ActiveModel # == Active \Model \Dirty @@ -26,8 +26,8 @@ module ActiveModel # # define_attribute_methods :name # - # def initialize(name) - # @name = name + # def initialize + # @name = nil # end # # def name @@ -58,7 +58,7 @@ module ActiveModel # # A newly instantiated +Person+ object is unchanged: # - # person = Person.new("Uncle Bob") + # person = Person.new # person.changed? # => false # # Change the name: @@ -66,11 +66,11 @@ module ActiveModel # person.name = 'Bob' # person.changed? # => true # person.name_changed? # => true - # person.name_changed?(from: "Uncle Bob", to: "Bob") # => true - # person.name_was # => "Uncle Bob" - # person.name_change # => ["Uncle Bob", "Bob"] + # person.name_changed?(from: nil, to: "Bob") # => true + # person.name_was # => nil + # person.name_change # => [nil, "Bob"] # person.name = 'Bill' - # person.name_change # => ["Uncle Bob", "Bill"] + # person.name_change # => [nil, "Bill"] # # Save the changes: # @@ -80,9 +80,9 @@ module ActiveModel # # Reset the changes: # - # person.previous_changes # => {"name" => ["Uncle Bob", "Bill"]} + # person.previous_changes # => {"name" => [nil, "Bill"]} # person.name_previously_changed? # => true - # person.name_previous_change # => ["Uncle Bob", "Bill"] + # person.name_previous_change # => [nil, "Bill"] # person.reload! # person.previous_changes # => {} # @@ -119,10 +119,13 @@ module ActiveModel extend ActiveSupport::Concern include ActiveModel::AttributeMethods + OPTION_NOT_GIVEN = Object.new # :nodoc: + private_constant :OPTION_NOT_GIVEN + included do - attribute_method_suffix '_changed?', '_change', '_will_change!', '_was' - attribute_method_suffix '_previously_changed?', '_previous_change' - attribute_method_affix prefix: 'restore_', suffix: '!' + attribute_method_suffix "_changed?", "_change", "_will_change!", "_was" + attribute_method_suffix "_previously_changed?", "_previous_change" + attribute_method_affix prefix: "restore_", suffix: "!" end # Returns +true+ if any of the attributes have unsaved changes, +false+ otherwise. @@ -174,11 +177,10 @@ module ActiveModel end # Handles <tt>*_changed?</tt> for +method_missing+. - def attribute_changed?(attr, options = {}) #:nodoc: - result = changes_include?(attr) - result &&= options[:to] == __send__(attr) if options.key?(:to) - result &&= options[:from] == changed_attributes[attr] if options.key?(:from) - result + def attribute_changed?(attr, from: OPTION_NOT_GIVEN, to: OPTION_NOT_GIVEN) # :nodoc: + !!changes_include?(attr) && + (to == OPTION_NOT_GIVEN || to == __send__(attr)) && + (from == OPTION_NOT_GIVEN || from == changed_attributes[attr]) end # Handles <tt>*_was</tt> for +method_missing+. @@ -187,7 +189,7 @@ module ActiveModel end # Handles <tt>*_previously_changed?</tt> for +method_missing+. - def attribute_previously_changed?(attr, options = {}) #:nodoc: + def attribute_previously_changed?(attr) #:nodoc: previous_changes_include?(attr) end |