Add timestamps to an existing table

Question

I need to add timestamps (created_at & updated_at) to an existing table. I tried the following code but it didn\'t work.

class          


        

Answer 1

This seems like a clean solution in Rails 5.0.7 (discovered the change_column_null method):

def change
  add_timestamps :candidate_offices, default: nil, null: true
  change_column_null(:candidate_offices, :created_at, false, Time.zone.now)
  change_column_null(:candidate_offices, :created_at, false, Time.zone.now)
end