需要为近1000个软件包更新ssis连接管理器(Need to update ssis connection manager for almost 1000 packages)

 感谢多态关联，我们可以将所有关系放在一个表中，如下所示： 
 
create_table :follows do |t|
        t.references :followable, :polymorphic => true
        t.references :followed_by, :polymorphic => true
end
 
 然后模型是： 
 
class User < ActiveRecord::Base
    has_many :following_objects, :class_name => 'Follow', :as => :followed_by
    has_many :followed_objects, :class_name => 'Follow', :as => :followable
end

class Company < ActiveRecord::Base
    has_many :following_objects, :class_name => 'Follow', :as => :followed_by
    has_many :followed_objects, :class_name => 'Follow', :as => :followable
end

class Follow < ActiveRecord::Base
    belongs_to :followable, :polymorphic => true
    belongs_to :followed_by, :polymorphic => true
end
 
 抱歉丑陋的名字。 

Thanks to polymorphic associations, we can put all relations into one table which like this:
 
create_table :follows do |t|
        t.references :followable, :polymorphic => true
        t.references :followed_by, :polymorphic => true
end
 
Then the models are:
 
class User < ActiveRecord::Base
    has_many :following_objects, :class_name => 'Follow', :as => :followed_by
    has_many :followed_objects, :class_name => 'Follow', :as => :followable
end

class Company < ActiveRecord::Base
    has_many :following_objects, :class_name => 'Follow', :as => :followed_by
    has_many :followed_objects, :class_name => 'Follow', :as => :followable
end

class Follow < ActiveRecord::Base
    belongs_to :followable, :polymorphic => true
    belongs_to :followed_by, :polymorphic => true
end
 
Sorry for the ugly names.