Rails 3：“accepts_nested_attributes_for:reject_if”不起作用

Question

我的UserQuestion model 有許多accepted_answers 並接受嵌套屬性：accepted_answers

    accepts_nested_attributes_for :accepted_answers, :reject_if => lambda { |a| ( a[:answer_id] == 0) }, :allow_destroy => true

我的表單發送以下參數：

   "accepted_answers_attributes"=>{"0"=>{"answer_id"=>"0"}, "1"=>{"answer_id"=>"25"}, "2"=>{"answer_id"=>"0"}}

我想我的問題是，lambda 設置不正確，因為即使它們的 answer_id 為 0 也會創建已接受的答案

Answer 1

嘗試這個：

:reject_if => lambda { |a| ( a[:answer_id].to_i == 0) }