如何跨模型共享验证? [英] How to share validations accross models?

问题描述

我在模型 TipoMovimiento 中进行了此验证:

I have this validations in a model TipoMovimiento:

class TipoMovimiento < ActiveRecord::Base
  before_validation :default_values

  validates :codigo, :numericality => {:greater_than => 0}
  validates :codigo, :descripcion, :sintetico, :presence => true
  validates :codigo, :descripcion, :sintetico, :uniqueness => true
  validates :descripcion, :length => {:minimum => 3}
  validates :sintetico, :length => {:minimum => 2}

private
  def default_values
    self.estado ||= true if self.estado.nil?
    self.codigo ||= TipoMovimiento.maximum(:codigo) + 1
  end
end

此外，我还有其他具有相同字段的模型，我不想对它们重复这些验证.我该怎么做?

Also, I have others models with the same fields, and I don't want to repeat these validations on them. How I do that?

推荐答案

我要做的是创建一个单独的模型:

What I would do is create a separate model:

module Validator                                                                                                                                              
  def self.included(base)
    base.send :validates, :name, :presence => true
  end
end

class User < ActiveRecord::Base
  include Validator
end

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