如何在 rails 3 中保存 DATETIME 列的当前日期/时间？

Question

I have a DATETIME column called last_profile_update. I need to update it with a current time. I have the following code:

user = User.new
user.last_profile_update = Date.today
user.save

but it does not work.

Answer 1

也许是一种简化该代码的方法：

user = User.create(:last_profile_update => Time.now)

Answer 2

可以用

user.touch(:last_profile_update)

Answer 3

Figured it was Time.now

user = User.new
user.last_profile_update = Time.now
user.save

Answer 4

可以通过以下方式完成：

user.last_profile_update = Date.today.to_datetime

Answer 5

User.create({:last_profile_update=>Time.now})