SQLite
Railsのmigration機能を色々試していて。 class ChangeBooks < ActiveRecord::Migration def self.up change_column :books, :publish, :string, :limit => 15 end def self.down change_column :books, :publish, :string, :limit => 255 end end こんなmig…
Railsのmigration機能を色々試していて。 class ChangeBooks < ActiveRecord::Migration def self.up change_column :books, :publish, :string, :limit => 15 end def self.down change_column :books, :publish, :string, :limit => 255 end end こんなmig…