Migration with Default Value current time

Question

Im trying to write a migration in which I have a field to datetime..

Right now my migration for field is like this..

t.datetime :date, default: Time.now

I know that this will create a default time at which migration ran.. and it will be set to all fields..

But what i want is to have a default time at which that row field will be getting created.Like the same as created_at

But why u need custom field even though u have "created_at" field...? its worthless — Jeet, Jul 21 '14 at 11:51

score 1 · Answer 1 · answered Jul 21 '14 at 11:57

You can use an Active Record Callback for that, like the before_create

Example:

class Subscription < ActiveRecord::Base
  before_create :record_signup

  private

  def record_signup
    self.signed_up_on = Date.today
  end
end

And you migration won't need a default value.

t.datetime :date

1 Answers1