Help us understand the problem. What is going on with this article?

after_commit内ではchangesが空になってるので注意

More than 5 years have passed since last update.
require "active_record"
ActiveRecord::Base.establish_connection(:adapter => "sqlite3", :database => ":memory:")
ActiveRecord::Migration.verbose = false
ActiveRecord::Schema.define do
  create_table :users do |t|
  end
end
class User < ActiveRecord::Base
  after_save do
    changes                     # => {"id"=>[nil, 1]}
  end
  after_commit do
    changes                     # => {}
  end
end
User.create!

ちょいとハマりました。

akicho8
Ruby脳にムチ打って泣きながらVue.jsをやっています
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