在Rails 3中动态获取模型属性 [英] get model attribute dynamically in rails 3

问题描述

如何动态地从模型对象获取属性?我将User对象的属性设置为字符串:

How can I get the attribute from the model object dynamically? I have the attribute of the User object as string:

u = User.find(1)

我可以做类似u.get("user_id")

推荐答案

您可以尝试使用ActiveRecord模型实例(例如哈希).

You could try using the ActiveRecord model instance like a hash.

u = User.find(1)
name = u[:name]
field = "first_name"
first_name = u[field]

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