用於同一方法的多個after_commit

Question

如何爲該方法指定多個回調？

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

private 

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

錯誤：

/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])) 

出於某種原因，回調是不是跟這個執行兩種：

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

它只能如果我兩種不同的方法，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，這個答案顯示相反的：
https://stackoverflow.com/a/10356903/1023609。

也許這是您使用的Rails版本的問題。