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nurey/gist:977064

Created May 17, 2011 18:33
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gistfile1.rb
class ScheduleGroup < ActiveRecord::Base
include AbstractGroup
has_and_belongs_to_many :schedules
end
class Schedule < ActiveRecord::Base
has_and_belongs_to_many :schedule_groups
end
module AbstractGroup
before_destroy :removable?
def removable?
self.schedules.empty? # self.collection.empty?
end
end
@samuelkadolph
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Sorry, make that groupings.concat(associations).

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