diff options
Diffstat (limited to 'activemodel/lib/active_model/dirty.rb')
-rw-r--r-- | activemodel/lib/active_model/dirty.rb | 69 |
1 files changed, 31 insertions, 38 deletions
diff --git a/activemodel/lib/active_model/dirty.rb b/activemodel/lib/active_model/dirty.rb index ca04f48c1c..c03e5fac79 100644 --- a/activemodel/lib/active_model/dirty.rb +++ b/activemodel/lib/active_model/dirty.rb @@ -12,7 +12,7 @@ module ActiveModel # * <tt>include ActiveModel::Dirty</tt> in your object. # * Call <tt>define_attribute_methods</tt> passing each method you want to # track. - # * Call <tt>attr_name_will_change!</tt> before each change to the tracked + # * Call <tt>[attr_name]_will_change!</tt> before each change to the tracked # attribute. # * Call <tt>changes_applied</tt> after the changes are persisted. # * Call <tt>clear_changes_information</tt> when you want to reset the changes @@ -52,10 +52,10 @@ module ActiveModel # end # end # - # A newly instantiated object is unchanged: + # A newly instantiated +Person+ object is unchanged: # - # person = Person.find_by(name: 'Uncle Bob') - # person.changed? # => false + # person = Person.new + # person.changed? # => false # # Change the name: # @@ -71,8 +71,8 @@ module ActiveModel # Save the changes: # # person.save - # person.changed? # => false - # person.name_changed? # => false + # person.changed? # => false + # person.name_changed? # => false # # Reset the changes: # @@ -84,42 +84,41 @@ module ActiveModel # # person.name = "Uncle Bob" # person.rollback! - # person.name # => "Bill" - # person.name_changed? # => false + # person.name # => "Bill" + # person.name_changed? # => false # # Assigning the same value leaves the attribute unchanged: # # person.name = 'Bill' - # person.name_changed? # => false - # person.name_change # => nil + # person.name_changed? # => false + # person.name_change # => nil # # Which attributes have changed? # # person.name = 'Bob' - # person.changed # => ["name"] - # person.changes # => {"name" => ["Bill", "Bob"]} + # person.changed # => ["name"] + # person.changes # => {"name" => ["Bill", "Bob"]} # # If an attribute is modified in-place then make use of # +[attribute_name]_will_change!+ to mark that the attribute is changing. - # Otherwise Active Model can't track changes to in-place attributes. Note + # Otherwise \Active \Model can't track changes to in-place attributes. Note # that Active Record can detect in-place modifications automatically. You do # not need to call +[attribute_name]_will_change!+ on Active Record models. # # person.name_will_change! - # person.name_change # => ["Bill", "Bill"] + # person.name_change # => ["Bill", "Bill"] # person.name << 'y' - # person.name_change # => ["Bill", "Billy"] + # person.name_change # => ["Bill", "Billy"] module Dirty extend ActiveSupport::Concern include ActiveModel::AttributeMethods included do attribute_method_suffix '_changed?', '_change', '_will_change!', '_was' - attribute_method_affix prefix: 'reset_', suffix: '!' attribute_method_affix prefix: 'restore_', suffix: '!' end - # Returns +true+ if any attribute have unsaved changes, +false+ otherwise. + # Returns +true+ if any of the attributes have unsaved changes, +false+ otherwise. # # person.changed? # => false # person.name = 'bob' @@ -167,15 +166,15 @@ module ActiveModel @changed_attributes ||= ActiveSupport::HashWithIndifferentAccess.new end - # Handle <tt>*_changed?</tt> for +method_missing+. + # Handles <tt>*_changed?</tt> for +method_missing+. def attribute_changed?(attr, options = {}) #:nodoc: - result = changed_attributes.include?(attr) + result = changes_include?(attr) result &&= options[:to] == __send__(attr) if options.key?(:to) result &&= options[:from] == changed_attributes[attr] if options.key?(:from) result end - # Handle <tt>*_was</tt> for +method_missing+. + # Handles <tt>*_was</tt> for +method_missing+. def attribute_was(attr) # :nodoc: attribute_changed?(attr) ? changed_attributes[attr] : __send__(attr) end @@ -187,29 +186,30 @@ module ActiveModel private + # Returns +true+ if attr_name is changed, +false+ otherwise. + def changes_include?(attr_name) + attributes_changed_by_setter.include?(attr_name) + end + alias attribute_changed_by_setter? changes_include? + # Removes current changes and makes them accessible through +previous_changes+. def changes_applied # :doc: @previously_changed = changes @changed_attributes = ActiveSupport::HashWithIndifferentAccess.new end - # Clear all dirty data: current changes and previous changes. + # Clears all dirty data: current changes and previous changes. def clear_changes_information # :doc: @previously_changed = ActiveSupport::HashWithIndifferentAccess.new @changed_attributes = ActiveSupport::HashWithIndifferentAccess.new end - def reset_changes - ActiveSupport::Deprecation.warn "#reset_changes is deprecated and will be removed on Rails 5. Please use #clear_changes_information instead." - clear_changes_information - end - - # Handle <tt>*_change</tt> for +method_missing+. + # Handles <tt>*_change</tt> for +method_missing+. def attribute_change(attr) [changed_attributes[attr], __send__(attr)] if attribute_changed?(attr) end - # Handle <tt>*_will_change!</tt> for +method_missing+. + # Handles <tt>*_will_change!</tt> for +method_missing+. def attribute_will_change!(attr) return if attribute_changed?(attr) @@ -222,14 +222,7 @@ module ActiveModel set_attribute_was(attr, value) end - # Handle <tt>reset_*!</tt> for +method_missing+. - def reset_attribute!(attr) - ActiveSupport::Deprecation.warn "#reset_#{attr}! is deprecated and will be removed on Rails 5. Please use #restore_#{attr}! instead." - - restore_attribute!(attr) - end - - # Handle <tt>restore_*!</tt> for +method_missing+. + # Handles <tt>restore_*!</tt> for +method_missing+. def restore_attribute!(attr) if attribute_changed?(attr) __send__("#{attr}=", changed_attributes[attr]) @@ -238,7 +231,7 @@ module ActiveModel end # This is necessary because `changed_attributes` might be overridden in - # other implemntations (e.g. in `ActiveRecord`) + # other implementations (e.g. in `ActiveRecord`) alias_method :attributes_changed_by_setter, :changed_attributes # :nodoc: # Force an attribute to have a particular "before" value @@ -247,7 +240,7 @@ module ActiveModel end # Remove changes information for the provided attributes. - def clear_attribute_changes(attributes) + def clear_attribute_changes(attributes) # :doc: attributes_changed_by_setter.except!(*attributes) end end |