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我怎樣才能得到同樣的查詢結果:如何通過名稱在mongoid上查詢字段?
Test.where(name: "Depeche Mode").first.last_connection_date
由字符串更改last_connection_date
@desired_field = "last_connection_date"
Test.where(name: "Depeche Mode").first.(@desired_field)
Perfet的,非常感謝你 – user3146542