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2008 Apr 11
2
Validating an ActiveRecord object and its has_many :through associations
Considering an object with several has_many :through => associations,
what is the ''best'' way to handle validations?
As an example:
class Student < ActiveRecord::Base
# some attrbutes like
# :name
# :grade
# relationships
has_many :students_assignment, :dependent => :destroy
has_many :assignments, :through => :students_assignment
has_many