# -*- coding: utf-8 -*-
class User < ActiveRecord::Base
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include Activity::UserMethods
end
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class Activity < ActiveRecord::Base
attr_accessible :title, :content, :start_time, :end_time
belongs_to :creator, :class_name => 'User', :foreign_key => :creator_id
validates :creator, :presence => true
validates :title, :presence =>......
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