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sunchess/rails_dirty.rb

Created July 18, 2017 16:01
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Пояснения по dirty методам
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rails_dirty.rb
#rails <= 5.0
user = User.new(name: "Bob")
user.save
user.changed_name? #true
user.update_attribute(:name, "Alice")
user.changed_name? #true
#rails >= 5.1
user = User.new(name: "Bob")
user.save
user.saved_change_to_name? #false
user.will_save_change_to_name? #true
user.update_attribute(:name, "Alice")
user.saved_change_to_name? #true
user.will_save_change_to_name? #false
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