socialforge/app/models/project_info.rb

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class ProjectInfo < ActiveRecord::Base
attr_accessible :project_id, :user_id
belongs_to :project
belongs_to :user
validates_presence_of :project_id, :user_id
validates_uniqueness_of :project_id, :scope => :user_id
after_save :update_user_level
def self.manager? (user_id, project)
for project_info in project.project_infos
if project_info.user_id == user_id
return true
end
end
return false
end
#更新用户等级
def update_user_level
self.user.update_user_level
end
end