change column name Rails

Question

I have this table:

class CreateShoes < ActiveRecord::Migration
  def change
    create_table :shoes do |t|
      t.string :name
      t.boolean :leather
              


        

Answer 1

If your intention is to rename column in table than you example migration is not making sense :)... Instead of this

class CreateShoes < ActiveRecord::Migration
  def change
    create_table :shoes do |t|
      t.string :name
      t.boolean :leather
      t.integer :season

      t.timestamps null: false
    end

    change_table :products do |t|
      t.rename :season, :season_id
    end

  end
end

You just need table change migration, like this(Rails will take care rollback for your):

class RenameSessionColumnInsideShoes < ActiveRecord::Migration
  def change
    change_table :products do |t|
      t.rename :season, :season_id
    end
  end
end

rename method on table object in rails is valid method, as you can see in Rails source code

https://github.com/rails/rails/blob/master/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb#L582