有没有办法将 Rails ActiveRecord 属性设为私有? [英] Is there a way to make Rails ActiveRecord attributes private?

问题描述

默认情况下，ActiveRecord 从相应的数据库表中获取所有字段，并为所有字段创建公共属性.

By default, ActiveRecord takes all fields from the corresponding database table and creates public attributes for all of them.

我认为将模型中的所有属性设为公开是合理的不.更重要的是，暴露供内部使用的属性会使模型的界面变得混乱并违反封装原则.

I think that it's reasonable not to make all attributes in a model public. Even more, exposing attributes that are meant for internal use clutters the model's interface and violates the encapsulation principle.

那么，有没有办法让一些属性从字面上private?

So, is there a way to make some of the attributes literally private?

或者，也许我应该转向其他一些 ORM?

Or, maybe I should move on to some other ORM?

推荐答案

Jordini 参与其中

Jordini was most of the way there

大部分 active_record 发生在 method_missing 中.如果你预先定义方法，它不会为该方法命中 method_missing，而是使用你的方法(有效覆盖，但不是真的)

Most of active_record happens in method_missing. If you define the method up front, it won't hit method_missing for that method, and use yours instead (effectively overwriting, but not really)

class YourModel < ActiveRecord::Base

  private

  def my_private_attribute
    self[:my_private_attribute]
  end

  def my_private_attribute=(val)
    write_attribute :my_private_attribute, val
  end

end

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