Change the default value for table column with migration

It is strange, because according to documentation (change_column_default) your code should work..

As an option you might define up and down:

class ChangeDefaultvalueForHideSeasonSelector < ActiveRecord::Migration  def up    change_column_default :plussites, :hide_season_selector, true  end  def down    change_column_default :plussites, :hide_season_selector, false  endend

You have to check which version of ActiveRecord you are using. According to you command rake db:migrate you are still on rails 4.2 or earlier.

If you are on ActiveRecord up to 4.2 (change_column_default 4.2.9), there is no from/to option and you can define only the new default option as param.

class ChangeDefaultvalueForHideSeasonSelector < ActiveRecord::Migration   def change     change_column_default :plussites, :hide_season_selector, true   endend

The solution above won't allow a rollback as the method don't know, what the previous default value was. This is why you have to define an separate up and down method:

class ChangeDefaultvalueForHideSeasonSelector < ActiveRecord::Migration  def up    change_column_default :plussites, :hide_season_selector, true  end  def down    change_column_default :plussites, :hide_season_selector, false  endend

If you are on rails 5 or newer, there are new possibilities to define the value which was before and which one should be after by from/to (change_column_default 5.0.0.1). On rails 5 you ca use your chosen solution:

class ChangeDefaultvalueForHideSeasonSelector < ActiveRecord::Migration   def change     change_column_default :plussites, :hide_season_selector, from: false, to: true   endend

I hope this explanation will help the people with comments under the other answer.