socialforge/app/models/course_activity.rb

31 lines
1008 B
Ruby

class CourseActivity < ActiveRecord::Base
attr_accessible :user_id, :course_act_id,:course_act_type,:course_id
# 虚拟关联
belongs_to :course_act ,:polymorphic => true
belongs_to :course
belongs_to :user
has_many :user_acts, :class_name => 'UserAcivity',:as =>:act
after_save :add_user_activity
before_destroy :destroy_user_activity
#在个人动态里面增加当前动态
def add_user_activity
user_activity = UserActivity.where("act_type = '#{self.class.to_s}' and act_id = '#{self.id}'").first
if user_activity
user_activity.save
else
user_activity = UserActivity.new
user_activity.act_id = self.id
user_activity.act_type = self.class.to_s
user_activity.container_type = "Course"
user_activity.container_id = self.course_id
user_activity.save
end
end
def destroy_user_activity
user_activity = UserActivity.where("act_type = '#{self.class.to_s}' and act_id = '#{self.id}'")
user_activity.destroy_all
end
end