ruby-on-rails-3 - 同一方法的多个 after_commit

Question

如何为该方法指定多个回调？

after_commit :assign_awards, on: [:create, :destroy]

private

def assign_awards
  AwardsWorker.perform_async(self.id, self.class.name, self.user_id)
end

错误：

/activesupport-3.2.13/lib/active_support/callbacks.rb:404: syntax error, unexpected '[', expecting tSTRING_CONTENT or tSTRING_DBEG or tSTRING_DVAR or tSTRING_END
...(transaction_include_action?(:[:create, :destroy]))

出于某种原因，回调也不会用这个执行：

after_commit :assign_awards, on: :create
after_commit :assign_awards, on: :destroy

仅当我使用两种不同的方法时才有效，例如：

after_commit :assign_awards_create, on: :create
after_commit :assign_awards_destroy, on: :destroy

private

def assign_awards_create
  AwardsWorker.perform_async(self.id, self.class.name, self.user_id)
end

def assign_awards_destroy
  AwardsWorker.perform_async(self.id, self.class.name, self.user_id)
end

Answer 1

嗯，这个答案正好相反：
https ://stackoverflow.com/a/10356903/1023609 。

也许这是您使用的 Rails 版本的问题。