Question

我的模特现在是这样的：

class Order < ActiveRecord::Base
  attr_accessible :**** :phone_number, :receiver, :shipping_id, :street, :totalcost, :user_id, :zip, :use_user_data
  attr_accessor :use_user_data
  validates :city, :presence => {:message =>  I18n.t(:city_not_chosen)}
  validates :zip, :presence => {:message =>  I18n.t(:zip_not_chosen)}
  validates :street, :presence => {:message =>  I18n.t(:street__not_chosen)}
  validates :building, :presence => {:message =>  I18n.t(:building_not_chosen)}
  validates :phone_number, :presence => {:message =>  I18n.t(:phone_number_not_chosen)}
  validates :receiver, :presence => {:message =>  I18n.t(:receiver_not_chosen)}
end

如你所见，我在模型中设置了一些非db字段的字段（use_user_data）......

但该如何做，if：use_user_data为false，good和right验证，但是当true为true时没有验证？

我认为这样做：

  if !:use_user_data
    validates :city, :presence => {:message =>  I18n.t(:city_not_chosen)}
    validates :zip, :presence => {:message =>  I18n.t(:zip_not_chosen)}
    validates :street, :presence => {:message =>  I18n.t(:street__not_chosen)}
    validates :building, :presence => {:message =>  I18n.t(:building_not_chosen)}
    validates :phone_number, :presence => {:message =>  I18n.t(:phone_number_not_chosen)}
    valida

形式

= form_for @order do |f|
  %div
    = f.label :use_user_data , "Использовать данные вашего профиля*: "
    = label :use_user_data , "Да"
    = f.radio_button :use_user_data, true, :required => true, :id => "use_user_data", :checked => true
    = label :use_user_data , "Нет"
    = f.radio_button :use_user_data, false, :required => true, :id => "dont_use_user_data"

Answer 1

您可以对选项:if或:unless使用条件验证。示例：

validates :city, :presence => {:message =>  I18n.t(:city_not_chosen)}, :unless => :use_user_data

查看其他sytntax的Rails Guide on Validation，最后一个可能是你最合适的：

with_options :unless => :use_user_data do |order|
  order.validates :city, :presence => {:message =>  I18n.t(:city_not_chosen)}
  order.validates :zip, :presence => {:message =>  I18n.t(:zip_not_chosen)}
  order.validates :street, :presence => {:message =>  I18n.t(:street__not_chosen)}
  # ...
end

Rails验证radiobutton虚拟属性值是否为false

1 个答案: