類似作用與名稱的 Model 超過 2 個
場景
#TODO
Polymorphic Association
Bad Smell
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| class PostComment < ActiveRecord::Base
class PhotoCommenct < ActiveRecord::Base
|
Good Smell
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| class Comment < ActiveRecord::Base
belongs_to :commentable, :polymorphic => true
end
class Article < ActiveRecord::Base
has_many :comments, :as => :commentable
end
class Photo < ActiveRecord::Base
has_many :comments, :as => :commentable
end
|