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Rails:将所有ActiveRecord“validates”行保存在一个单独的文件中?

module ruby-on-rails-3 validation ruby-on-rails

d11wtq Vadim Baryshev · 技术社区 · 16 年前

我意识到 validates 行实际上是一个方法调用(很明显),所以这样要求它们并不像我预期的那样。

这是可行的,但我不确定它是否正确(完全符合 Auction (类名):

class Auction::Validations
  Auction.validates :status, :presence => true,
                     :inclusion => { :in => [
                        Auction::CREATING,
                        Auction::OPEN,
                        Auction::PENDING,
                        Auction::CANCELLED,
                        Auction::SUSPENDED,
                        Auction::EXPIRED,
                        Auction::CLOSING_COMPLETED,
                        Auction::CLOSING_WON,
                        Auction::COMPLETED,
                        Auction::WON,
                        Auction::NEGOTIATING,
                        Auction::IN_ESCROW
                     ] }
  Auction.validates :user,   :presence => true
  Auction.validates :url,    :presence => true,
                     # FIXME: Move this to a URLValidator and do :url => true
                     :format => /^https?:\/\/[a-z0-9-]+(\.[a-z0-9-])*\.[a-z0-9]+\/.*/i
  Auction.validates :title,  :presence => true,
                     :length => { :maximum => 255 }
  Auction.validates :description,  :presence => true
  Auction.validates :reserve, :numericality => { :greater_than_or_equal_to => :minimum_bid }
end

当需要时( require 'auction/validations )进入 拍卖

我的几个模型类被所有这些“validates”调用弄得有点混乱,所以我想我可以将它们移到一个单独的类中,并“要求”它们,但它似乎不起作用。

class Auction < ActiveRecord::Base
  require 'auction/validations'
  ...

class Auction::Validations
  include ActiveModel::Validations

  validates :status, :presence => true,
                     :inclusion => { :in => [
                        ... snip ...
                     ] }
  validates :user,   :presence => true
  validates :url,    :presence => true,
                     # FIXME: Move this to a URLValidator
                     :format => /^https?:\/\/[a-z0-9-]+(\.[a-z0-9-])*\.[a-z0-9]+\/.*/i
  validates :title,  :presence => true,
                     :length => { :maximum => 255 }
  validates :description,  :presence => true
  validates :reserve, :numericality => { :greater_than_or_equal_to => :minimum_bid }

  validates_each :status, :on => :update do |auction, status_attr, value|
    if auction.state_machine.current_state != value
      # FIXME: Raise an Exception instead; this is a developer error, not a user error
      auction.errors.add status_attr, "Status cannot be changed directly"
    end
  end
end

puts "here" ),并且数字性检查不再起作用。

随着这个班的身体一味的复制回到拍卖班,一切又开始运转了。

编辑:

事实上,所有的验证都不起作用。不仅仅是那两个。六羟甲基三聚氰胺六甲醚。

4 回复 | 直到 15 年前

Vipin 15 年前

我不确定这是否正确,但不知怎么的,它对我很有效:

module MyValidations
  module User
    def self.included(base)
      base.validates_presence_of :firstname
    end
  end end

然后你可以打电话

User.class_eval do
  include MyValidations::User
end

希望有帮助。

sbl 15 年前

在拍卖结束时放置::验证:

Auction.send :extend, Auction::Validations

在拍卖结束时,把这一行。

shingara 16 年前

module Auction::Validations
  extend ActiveSupport::Concern
  def included(base)
  validates :status, :presence => true,
                     :inclusion => { :in => [
                        ... snip ...
                     ] }
  validates :user,   :presence => true
  validates :url,    :presence => true,
                     # FIXME: Move this to a URLValidator
                     :format => /^https?:\/\/[a-z0-9-]+(\.[a-z0-9-])*\.[a-z0-9]+\/.*/i
  validates :title,  :presence => true,
                     :length => { :maximum => 255 }
  validates :description,  :presence => true
  validates :reserve, :numericality => { :greater_than_or_equal_to => :minimum_bid }

  validates_each :status, :on => :update do |auction, status_attr, value|
    if auction.state_machine.current_state != value
      # FIXME: Raise an Exception instead; this is a developer error, not a user error
      auction.errors.add status_attr, "Status cannot be changed directly"
    end
  end
  end
end

Inanc Gumus 11 年前

# put this into: app/models/concerns/auction/validations.rb
class Auction
  module Validations
    extend ActiveSupport::Concern

    included do
      validates :status, presence: true
    end
  end
end

class Auction
  include Validations

  # other model code...
end