Change a column type from Date to DateTime during ROR migration

Question

I need to change my column type from date to datetime for an app I am making. I don\'t care about the data as its still being developed.

How can I do this?

Answer 1

In Rails 3.2 and Rails 4, Benjamin's popular answer has a slightly different syntax.

First in your terminal:

$ rails g migration change_date_format_in_my_table

Then in your migration file:

class ChangeDateFormatInMyTable < ActiveRecord::Migration
  def up
   change_column :my_table, :my_column, :datetime
  end

  def down
   change_column :my_table, :my_column, :date
  end
end