Sha256: 241553fb946f7f1164e4642e7f295cab7c78a6236b67355d4616d16c6bed00e7
Contents?: true
Size: 234 Bytes
Versions: 8
Compression:
Stored size: 234 Bytes
Contents
class LessonError < Exception
end
class Lesson < ActiveRecord::Base
has_and_belongs_to_many :students
before_destroy :ensure_no_students
def ensure_no_students
raise LessonError unless students.empty?
end
end
Version data entries
8 entries across 8 versions & 1 rubygems