私は持っている...
class Report < ActiveRecord::Base
has_and_belongs_to_many :elements
end
class Element < ActiveRecord::Base
has_and_belongs_to_many :reports
end
コマンド ラインで非常に奇妙な動作が見られます。
$Element.all
[#<Element id: 1, name: "fdafda", created_at: "2013-03-12 02:10:56", updated_at: "2013-03-12 02:10:56">,
#<Element id: 2, name: "Foo", created_at: "2013-03-14 10:46:56", updated_at: "2013-03-14 10:46:56">,
#<Element id: 3, name: "Bar", created_at: "2013-03-14 10:47:03", updated_at: "2013-03-14 10:47:03">]
$ Report.first.elements
[#<Element id: 2, name: "Foo", created_at: "2013-03-14 10:46:56", updated_at: "2013-03-14 10:46:56">,
#<Element id: 2, name: "Foo", created_at: "2013-03-14 10:46:56", updated_at: "2013-03-14 10:46:56">,
#<Element id: 3, name: "Bar", created_at: "2013-03-14 10:47:03", updated_at: "2013-03-14 10:47:03">,
#<Element id: 3, name: "Bar", created_at: "2013-03-14 10:47:03", updated_at: "2013-03-14 10:47:03">]
(rdb:2) Report.first.elements.uniq
[#<Element id: 2, name: "Foo", created_at: "2013-03-14 10:46:56", updated_at: "2013-03-14 10:46:56">,
#<Element id: 3, name: "Bar", created_at: "2013-03-14 10:47:03", updated_at: "2013-03-14 10:47:03">]
要素の複製はどのようにReport.first.elements
可能ですか? どうすればそれを止めることができますか?
rails -v
Rails 3.2.11
$ ruby -v
ruby 1.9.2p320 (2012-04-20 revision 35421) [x86_64-darwin12.2.1]