diff options
Diffstat (limited to 'activemodel')
-rw-r--r-- | activemodel/CHANGELOG.md | 11 | ||||
-rw-r--r-- | activemodel/lib/active_model/dirty.rb | 23 | ||||
-rw-r--r-- | activemodel/test/cases/dirty_test.rb | 13 |
3 files changed, 44 insertions, 3 deletions
diff --git a/activemodel/CHANGELOG.md b/activemodel/CHANGELOG.md index 32a2cb4517..4961d69d2a 100644 --- a/activemodel/CHANGELOG.md +++ b/activemodel/CHANGELOG.md @@ -1,3 +1,12 @@ +* Add `ActiveModel::Dirty#[attr_name]_previously_changed?` and + `ActiveModel::Dirty#[attr_name]_previous_change` to improve access + to recorded changes after the model has been saved. + + It makes the dirty-attributes query methods consistent before and after + saving. + + *Fernando Tapia Rico* + * Deprecate the `:tokenizer` option for `validates_length_of`, in favor of plain Ruby. @@ -13,7 +22,7 @@ *Wojciech Wnętrzak* -* Allow symbol as values for `tokenize` of `LengthValidator` +* Allow symbol as values for `tokenize` of `LengthValidator`. *Kensuke Naito* diff --git a/activemodel/lib/active_model/dirty.rb b/activemodel/lib/active_model/dirty.rb index c03e5fac79..c0fc507286 100644 --- a/activemodel/lib/active_model/dirty.rb +++ b/activemodel/lib/active_model/dirty.rb @@ -76,9 +76,11 @@ module ActiveModel # # Reset the changes: # - # person.previous_changes # => {"name" => ["Uncle Bob", "Bill"]} + # person.previous_changes # => {"name" => ["Uncle Bob", "Bill"]} + # person.name_previously_changed? # => true + # person.name_previous_change # => ["Uncle Bob", "Bill"] # person.reload! - # person.previous_changes # => {} + # person.previous_changes # => {} # # Rollback the changes: # @@ -115,6 +117,7 @@ module ActiveModel included do attribute_method_suffix '_changed?', '_change', '_will_change!', '_was' + attribute_method_suffix '_previously_changed?', '_previous_change' attribute_method_affix prefix: 'restore_', suffix: '!' end @@ -179,6 +182,11 @@ module ActiveModel attribute_changed?(attr) ? changed_attributes[attr] : __send__(attr) end + # Handles <tt>*_previously_changed?</tt> for +method_missing+. + def attribute_previously_changed?(attr, options = {}) #:nodoc: + previous_changes_include?(attr) + end + # Restore all previous data of the provided attributes. def restore_attributes(attributes = changed) attributes.each { |attr| restore_attribute! attr } @@ -192,6 +200,12 @@ module ActiveModel end alias attribute_changed_by_setter? changes_include? + # Returns +true+ if attr_name were changed before the model was saved, + # +false+ otherwise. + def previous_changes_include?(attr_name) + @previously_changed.include?(attr_name) + end + # Removes current changes and makes them accessible through +previous_changes+. def changes_applied # :doc: @previously_changed = changes @@ -209,6 +223,11 @@ module ActiveModel [changed_attributes[attr], __send__(attr)] if attribute_changed?(attr) end + # Handles <tt>*_previous_change</tt> for +method_missing+. + def attribute_previous_change(attr) + @previously_changed[attr] if attribute_previously_changed?(attr) + end + # Handles <tt>*_will_change!</tt> for +method_missing+. def attribute_will_change!(attr) return if attribute_changed?(attr) diff --git a/activemodel/test/cases/dirty_test.rb b/activemodel/test/cases/dirty_test.rb index 66ed8a350a..d17a12ad12 100644 --- a/activemodel/test/cases/dirty_test.rb +++ b/activemodel/test/cases/dirty_test.rb @@ -137,6 +137,19 @@ class DirtyTest < ActiveModel::TestCase assert_equal [nil, "Jericho Cane"], @model.previous_changes['name'] end + test "setting new attributes should not affect previous changes" do + @model.name = "Jericho Cane" + @model.save + @model.name = "DudeFella ManGuy" + assert_equal [nil, "Jericho Cane"], @model.name_previous_change + end + + test "saving should preserve model's previous changed status" do + @model.name = "Jericho Cane" + @model.save + assert @model.name_previously_changed? + end + test "previous value is preserved when changed after save" do assert_equal({}, @model.changed_attributes) @model.name = "Paul" |