Rails 3 ActiveModel 中的自定义验证出现错误

Question

我正在尝试使用 Date Validator Gem 但遇到错误，我不确定是否是因为模型不是 Active Record（我见过有人建议验证在 ActiveModel 中有点时髦，而不是在 ActiveRecord 中）。

我正在使用 Ruby 1.9.2 &轨道 3.0.7。我已附上下面的类和错误。

预先感谢您的任何帮助！

类

require 'ice_cube'
require 'active_support'
require 'active_support/time_with_zone'
require 'ostruct'
require 'tzinfo'
require 'active_model'
include ActiveModel::Validations
include ActiveModel::Conversion
extend ActiveModel::Naming
class Schedule
  attr_accessor :yaml, :repeat, :interval, :interval_unit, :start_time, :start_date, :end_date, :end_time, :ends, :on, :after, :monday, :tuesday, :wednesday, :thursday, :friday, :saturday, :sunday
  validates_presence_of :repeat, :start_date, :start_time, :end_date, :end_time, :ends
  validates_presence_of :interval, :interval_unit, :if => :ends_never? 
  validates_presence_of :on, :if => :ends_on_date?
  validates_numericality_of :after, :greater_than => 0, :if => :ends_after_recurrences? 
  validates :start_date, :date => { :after => Time.now }
  validates :end_date, :date => { :after => :start_date }
  validates :on, :date => { :after => :end_date } 

  def initialize(attributes = {})
  end

  def persisted?
    false
  end

  private
  def parse_schedule
    if :repeat == 0
      get_repeatable
    end

  end
  def parse_yaml
  end

  def ends_on_date?
    return :ends == "on"
  end
  def ends_never?
    return :ends == "never"
  end
  def ends_after_recurrences?
    return :ends == "after"
  end
end

Rails 控制台错误

ruby-1.9.2-p180 :001 > s = Schedule.new
NoMethodError: undefined method `new' for DateValidator:Module
    from /Users/chance/.rvm/gems/ruby-1.9.2-p180/gems/activemodel-3.0.7/lib/active_model/validations/with.rb:70:in `block in validates_with'
    from /Users/chance/.rvm/gems/ruby-1.9.2-p180/gems/activemodel-3.0.7/lib/active_model/validations/with.rb:69:in `each'
    from /Users/chance/.rvm/gems/ruby-1.9.2-p180/gems/activemodel-3.0.7/lib/active_model/validations/with.rb:69:in `validates_with'
    from /Users/chance/.rvm/gems/ruby-1.9.2-p180/gems/activemodel-3.0.7/lib/active_model/validations/validates.rb:90:in `block in validates'
    from /Users/chance/.rvm/gems/ruby-1.9.2-p180/gems/activemodel-3.0.7/lib/active_model/validations/validates.rb:83:in `each'
    from /Users/chance/.rvm/gems/ruby-1.9.2-p180/gems/activemodel-3.0.7/lib/active_model/validations/validates.rb:83:in `validates'
    from /Users/chance/Sites/EatingNow/app/models/schedule.rb:16:in `<class:Schedule>'
    from /Users/chance/Sites/EatingNow/app/models/schedule.rb:10:in `<top (required)>'
    from /Users/chance/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:454:in `load'
    from /Users/chance/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:454:in `block in load_file'
    from /Users/chance/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:596:in `new_constants_in'
    from /Users/chance/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:453:in `load_file'
    from /Users/chance/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:340:in `require_or_load'
    from /Users/chance/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:491:in `load_missing_constant'
    from /Users/chance/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:183:in `block in const_missing'
    from /Users/chance/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:181:in `each'
    from /Users/chance/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:181:in `const_missing'
    from /Users/chance/.rvm/gems/ruby-1.9.2-p180/gems/rspec-core-2.5.1/lib/rspec/core/backward_compatibility.rb:20:in `const_missing'
    from /Users/chance/.rvm/gems/ruby-1.9.2-p180/gems/rspec-expectations-2.5.0/lib/rspec/expectations/backward_compatibility.rb:6:in `const_missing'
    from (irb):1
    from /Users/chance/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.0.7/lib/rails/commands/console.rb:44:in `start'
    from /Users/chance/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.0.7/lib/rails/commands/console.rb:8:in `start'
    from /Users/chance/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.0.7/lib/rails/commands.rb:23:in `<top (required)>'
    from script/rails:6:in `require'
    from script/rails:6:in `<main>'

Answer 1

您已包含/扩展了顶级命名空间。确保包含/扩展在类中。

class Schedule

  include ActiveModel::Validations
  include ActiveModel::Conversion
  extend ActiveModel::Naming