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       t.integer :season        t.timestamps null: false     end   end end 

the 'season' column should be called 'season_id'. I know that I have to write 't.rename :season, :season_id' as explained in http://edgeguides.rubyonrails.org/active_record_migrations.html#column-modifiers but I don't manage to find the right syntax. Should it be?

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 

Doesn't work. Anything I have to do in the Mac console? Thanks!

Answer 1

Run in your console:

$ rails g migration rename_season_to_season_id 

Now file db/migrate/TIMESTAMP_rename_season_to_season_id.rb contains following:

class RenameSeasonToSeasonId < ActiveRecord::Migration   def change   end end 

Modify it as follows:

class RenameSeasonToSeasonId < ActiveRecord::Migration   def change     rename_column :shoes, :season, :season_id   end end 

Then run $ rake db:migrate in console.