0
我有以下表格。如何更改连接表上的外键?
class Reward ActiveRecord::Base
has_many :earned_rewards
has_many :players, :through => :earned_rewards
end
class EarnedReward < ActiveRecord::Base
belongs_to :reward
belongs_to :player
end
class Player < ActiveRecord::Base
has_many :earned_rewards
has_many :rewards, :through => :earned_rewards
end
我的问题是EarnedReward表上的外键是字符串类型,并且不符合Rails约定。我希望将Integer字段(player_id和reward_id)添加到EarnedReward表中以充当新的外键,同时保留旧字段及其值。
我正在使用Rails 4.1.1,我不确定如何完成此操作。
什么是当前的外键? – 2014-09-13 01:57:42