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class StepQuiz < ActiveRecord::Base
belongs_to :step
has_many :step_quiz_questions, :dependent => :destroy
accepts_nested_attributes_for :step
accepts_nested_attributes_for :step_quiz_questions, :allow_destroy => true
attr_accessible :step_id, :instructions, :correct_to_pass, :retakes_allowed, :time_limit, :step_attributes, :step_quiz_questions_attributes
end
我允許accept_nested_attributes_for爲給定模型調用兩次。它似乎沒有錯誤地工作。accep_nested_attributes_for在模型中調用兩次