Change a column type from Date to DateTime during ROR migration
First in your terminal:
rails g migration change_date_format_in_my_tableThen in your migration file:
For Rails >= 3.2:
class ChangeDateFormatInMyTable < ActiveRecord::Migration def up change_column :my_table, :my_column, :datetime end def down change_column :my_table, :my_column, :date endend
Also, if you're using Rails 3 or newer you don't have to use the up and down methods. You can just use change:
class ChangeFormatInMyTable < ActiveRecord::Migration def change change_column :my_table, :my_column, :my_new_type endend
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_tableThen 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 endend