ruby-on-rails – 有效的方式来报告记录验证警告以及错误？

# Define a "warnings" validation bucket on ActiveRecord objects.
#
# Example usage:
#
#   class MyModel < ActiveRecord::Base
#     warning do |vehicle_asset|
#       vehicle_asset.warnings.add(:description,"should be 'bob'") unless vehicle_asset.description == 'bob'
#     end
#   end
#
# THEN:
#
#   <ActiveRecord object>.description = 'Fred'
#   <ActiveRecord object>.sensible? # => false
#   <ActiveRecord object>.warnings.full_messages # => ["Description should be 'bob'"]
module Warnings
  module Validations
    extend ActiveSupport::Concern
    include ActiveSupport::Callbacks

    included do
      define_callbacks :warning
    end

    module ClassMethods
      def warning(*args,&block)
        options = args.extract_options!
        if options.key?(:on)
          options = options.dup
          options[:if] = Array.wrap(options[:if])
          options[:if] << "validation_context == :#{options[:on]}"
        end
        args << options
        set_callback(:warning,*args,&block)
      end
    end

    # Similar to <ActiveRecord object>.valid? but for warnings
    def sensible?
      self.warnings.clear
      self.run_callbacks :warning
      self.warnings.empty?
    end

    # Similar to <ActiveRecord object>.errors but returns a warnings collection
    def warnings
      @warnings ||= ActiveModel::Errors.new(self)
    end

  end
end

ActiveRecord::Base.send(:include,Warnings::Validations)

顶部的评论显示如何使用它.您可以将此代码放入初始化程序中,然后可以向所有ActiveRecord对象提供警告.然后基本上只是添加一个警告做块到每个模型的顶部,可以有警告,只需手动添加尽可能多的警告,你想要的.在您调用.sensible之前,此块将不会被执行？在模型上.

此外,请注意,由于警告不是验证错误,所以即使不是“明智的”(正如我所说),模型仍然在技术上是有效的.